Display TFT ST7789 (OshonSoft Basic). | Electronics Forum (Circuits, Projects and Microcontrollers)

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It may not display this or other websites correctly.<br />You should upgrade or use an <a href="https://www.google.com/chrome/" target="_blank" rel="noopener">alternative browser</a>.</div> <div class="p-body-header"> <div class="p-title "> <h1 class="p-title-value">Display TFT ST7789 (OshonSoft Basic).</h1> </div> <div class="p-description"> <ul class="listInline listInline--bullet"> <li> <i class="fa--xf fal fa-user" aria-hidden="true" title="Thread starter"></i> <span class="u-srOnly">Thread starter</span> <a href="/members/dogflu66.285107/" class="username u-concealed" dir="auto" data-user-id="285107" data-xf-init="member-tooltip">DogFlu66</a> </li> <li> <i class="fa--xf fal fa-clock" aria-hidden="true" title="Start date"></i> <span class="u-srOnly">Start date</span> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/" class="u-concealed"><time class="u-dt" dir="auto" datetime="2024-06-07T02:10:54-0700" data-time="1717751454" data-date-string="Jun 7, 2024" data-time-string="2:10 AM" title="Jun 7, 2024 at 2:10 AM">Jun 7, 2024</time></a> </li> </ul> </div> </div> <div class="p-body-main p-body-main--withSidebar "> <div class="p-body-contentCol"></div> <div class="p-body-sidebarCol"></div> <div class="p-body-content"> <div class="p-body-pageContent"> <div class="block block--messages " data-xf-init="lightbox select-to-quote" data-message-selector=".js-post" data-lb-id="thread-166219"> <div class="block-outer"></div> <div class="block-outer js-threadStatusField"></div> <div class="block-container"> <div class="block-body"> <article class="message message--post js-post js-inlineModContainer " data-author="DogFlu66" data-content="post-1452478" id="js-post-1452478" > <span class="u-anchorTarget" id="post-1452478"></span> <div class="message-inner"> <div class="message-cell message-cell--user"> <section class="message-user" > <div class="message-avatar "> <div class="message-avatar-wrapper"> <a href="/members/dogflu66.285107/" class="avatar avatar--m" data-user-id="285107" data-xf-init="member-tooltip"> <img src="/data/avatars/m/285/285107.jpg?1554030602" alt="DogFlu66" class="avatar-u285107-m" width="96" height="96" loading="lazy" /> </a> </div> </div> <div class="message-userDetails"> <h4 class="message-name"><a href="/members/dogflu66.285107/" class="username " dir="auto" data-user-id="285107" data-xf-init="member-tooltip">DogFlu66</a></h4> <h5 class="userTitle message-userTitle" dir="auto">Member</h5> </div> <span class="message-userArrow"></span> </section> </div> <div class="message-cell message-cell--main"> <div class="message-main js-quickEditTarget"> <header class="message-attribution message-attribution--split"> <ul class="message-attribution-main listInline "> <li class="u-concealed"> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1452478" rel="nofollow" > <time class="u-dt" dir="auto" datetime="2024-06-07T02:10:54-0700" data-time="1717751454" data-date-string="Jun 7, 2024" data-time-string="2:10 AM" title="Jun 7, 2024 at 2:10 AM">Jun 7, 2024</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1452478" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1452478/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1452478" rel="nofollow"> #1 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1452478" data-lb-caption-desc="DogFlu66 · Jun 7, 2024 at 2:10 AM"> <article class="message-body js-selectToQuote"> <div > <div class="bbWrapper">I leave the library to use ST7789 TFT display, I have translated one that is in C language. But unfortunately I have not been able to get it to work yet. I leave the files in case someone with more experience with these displays can review it.</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> <section class="message-attachments"> <h4 class="block-textHeader">Attachments</h4> <ul class="attachmentList"> <li class="file file--linked"> <a class="u-anchorTarget" id="attachment-146087"></a> <a class="file-preview" href="/attachments/main_st7789-bas.146087/" target="_blank"> <span class="file-typeIcon"> <i class="fa--xf fal fa-file" aria-hidden="true"></i> </span> </a> <div class="file-content"> <div class="file-info"> <span class="file-name" title="Main_ST7789.bas">Main_ST7789.bas</span> <div class="file-meta"> 1.5 KB · Views: 256 </div> </div> </div> </li> <li class="file file--linked"> <a class="u-anchorTarget" id="attachment-146088"></a> <a class="file-preview" href="/attachments/st7789_240x240-bas.146088/" target="_blank"> <span class="file-typeIcon"> <i class="fa--xf fal fa-file" aria-hidden="true"></i> </span> </a> <div 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2024</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1452505" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1452505/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1452505" rel="nofollow"> #2 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1452505" data-lb-caption-desc="aliarifat794 · Jun 8, 2024 at 10:51 AM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper">What hardware are you using? Aruino?</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> </div> <footer class="message-footer"> <div class="message-microdata" itemprop="interactionStatistic" itemtype="https://schema.org/InteractionCounter" itemscope> <meta itemprop="userInteractionCount" content="0" /> <meta itemprop="interactionType" content="https://schema.org/LikeAction" /> </div> <div class="reactionsBar js-reactionsList "> </div> <div class="js-historyTarget message-historyTarget toggleTarget" data-href="trigger-href"></div> </footer> </div> </div> <div class="message-cell message-cell--vote"> <div class="message-column"> <div class="contentVote js-contentVote " data-xf-init="content-vote" data-content-id="post-1452505"> <meta itemprop="upvoteCount" content="0" /> <a href="javascript:" class="contentVote-vote is-disabled contentVote-vote--up " data-vote="up"><span class="u-srOnly">Upvote</span></a> <span class="contentVote-score js-voteCount" data-score="0">0</span> <a href="javascript:" 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rel="nofollow" itemprop="url"> <time class="u-dt" dir="auto" datetime="2024-06-09T01:21:50-0700" data-time="1717921310" data-date-string="Jun 9, 2024" data-time-string="1:21 AM" title="Jun 9, 2024 at 1:21 AM" itemprop="datePublished">Jun 9, 2024</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1452531" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1452531/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1452531" rel="nofollow"> #3 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1452531" data-lb-caption-desc="DogFlu66 · Jun 9, 2024 at 1:21 AM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper">I am using an Amicus PCB with a Pic18F26K22 microcontroller, the hardware is proven to work because I have downloaded the C language version and the TFT works.<br /> <br /> I attach the C library used.</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> <section class="message-attachments"> <h4 class="block-textHeader">Attachments</h4> <ul class="attachmentList"> <li class="file file--linked"> <a class="u-anchorTarget" id="attachment-146135"></a> <a class="file-preview" href="/attachments/st7789_240x240-c.146135/" target="_blank"> <span class="file-typeIcon"> <i class="fa--xf fal fa-file-code" aria-hidden="true"></i> </span> </a> <div class="file-content"> <div class="file-info"> <span class="file-name" title="ST7789_240x240.c">ST7789_240x240.c</span> <div class="file-meta"> 16.3 KB · Views: 192 </div> </div> </div> </li> </ul> </section> </div> </div> <footer class="message-footer"> <div class="message-microdata" 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</article> <article class="message message--post js-post js-inlineModContainer " data-author="DogFlu66" data-content="post-1452552" id="js-post-1452552" itemscope itemtype="https://schema.org/Answer" itemid="https://www.electro-tech-online.com/posts/1452552/"> <meta itemprop="parentItem" itemscope itemid="https://www.electro-tech-online.com/threads/display-tft-st7789-oshonsoft-basic.166219/" /> <span class="u-anchorTarget" id="post-1452552"></span> <div class="message-inner"> <div class="message-cell message-cell--user"> <section class="message-user" itemprop="author" itemscope itemtype="https://schema.org/Person" itemid="https://www.electro-tech-online.com/members/dogflu66.285107/"> <meta itemprop="url" content="https://www.electro-tech-online.com/members/dogflu66.285107/" /> <div class="message-avatar "> <div class="message-avatar-wrapper"> <a href="/members/dogflu66.285107/" class="avatar avatar--m" data-user-id="285107" data-xf-init="member-tooltip"> <img 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data-time-string="2:42 PM" title="Jun 9, 2024 at 2:42 PM" itemprop="datePublished">Jun 9, 2024</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1452552" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1452552/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1452552" rel="nofollow"> #4 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1452552" data-lb-caption-desc="DogFlu66 · Jun 9, 2024 at 2:42 PM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper">This example with the basic configuration has been generated by an AI that I have been training for some time. It has not made a single syntax error but it does not work, I upload the files in case someone can review them.</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> <section class="message-attachments"> <h4 class="block-textHeader">Attachments</h4> <ul class="attachmentList"> <li class="file file--linked"> <a class="u-anchorTarget" id="attachment-146145"></a> <a class="file-preview" href="/attachments/main-st7789-chatgpt-bas.146145/" target="_blank"> <span class="file-typeIcon"> <i class="fa--xf fal fa-file" aria-hidden="true"></i> </span> </a> <div class="file-content"> <div class="file-info"> <span class="file-name" title="Main ST7789 ChatGPT.bas">Main ST7789 ChatGPT.bas</span> <div class="file-meta"> 1.4 KB · Views: 175 </div> </div> </div> </li> <li class="file file--linked"> <a class="u-anchorTarget" id="attachment-146146"></a> <a class="file-preview" href="/attachments/st7789-chatgpt_01-bas.146146/" target="_blank"> <span class="file-typeIcon"> <i class="fa--xf fal 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class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1452568" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1452568/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1452568" rel="nofollow"> #5 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1452568" data-lb-caption-desc="Ian Rogers · Jun 10, 2024 at 1:22 AM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper">How different is the ST7735, as on this very web site we did some super fast SPI read/writes<br /> I used the Il92341 and Eric was using the ST7735 the code seemed to be very similar.<br /> <br /> I have tried searching but it must be MUCH earlier than I remeber.. Cam was involved.</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> <aside class="message-signature"> <div class="bbWrapper">I'd give my left arm to be ambidextrous<br /> Nigel's tutorials in asm... <a href="http://www.winpicprog.co.uk/" target="_blank" class="link link--external" rel="noopener">http://www.winpicprog.co.uk/</a><br /> Nigel's tutorials.. re-written in C. <a href="http://www.electro-tech-online.com/content/467-nigel-goodwin-s-tutorials-c.html" class="link link--internal">http://www.electro-tech-online.com/content/467-nigel-goodwin-s-tutorials-c.html</a></div> </aside> </div> <footer class="message-footer"> <div class="message-microdata" itemprop="interactionStatistic" itemtype="https://schema.org/InteractionCounter" itemscope> <meta itemprop="userInteractionCount" content="0" /> <meta itemprop="interactionType" content="https://schema.org/LikeAction" /> </div> <div class="reactionsBar js-reactionsList "> </div> <div class="js-historyTarget 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class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> How different is the ST7735, as on this very web site we did some super fast SPI read/writes<br /> I used the Il92341 and Eric was using the ST7735 the code seemed to be very similar.<br /> <br /> I have tried searching but it must be MUCH earlier than I remeber.. Cam was involved. </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>Hi I and D,<br /> First thanks D for starting this thread. I hoped for this.<br /> I have some TFT displays, so I'll see if I can get results.<br /> <br /> Here's what I think 'I' was talking about: <a href="https://www.electro-tech-online.com/threads/" class="link link--internal">https://www.electro-tech-online.com/threads/</a><i>tft</i>-lcd-projects-ideas-applications-open-discussion.152344/<br /> <br /> If anyone is particularly interested in Nokia phone screens, Eric produce fonts for them, where he produced a choice of large and small characters also scrolling, but that may be on AAC. I can 'point' to it if asked, although the TFT screens are superior.<br /> Cheers, C.<br /> Here's a wiring diagram for PIC to TFT:</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> <section class="message-attachments"> <h4 class="block-textHeader">Attachments</h4> <ul class="attachmentList"> <li class="file file--linked"> <a class="u-anchorTarget" id="attachment-146551"></a> <script class="js-extraPhrases" type="application/json"> { "lightbox_close": "Close", "lightbox_next": "Next", "lightbox_previous": "Previous", "lightbox_error": "The requested content cannot be loaded. 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data-date-string="Jul 30, 2024" data-time-string="1:20 AM" title="Jul 30, 2024 at 1:20 AM" itemprop="dateModified">Jul 30, 2024</time> </div> </div> <footer class="message-footer"> <div class="message-microdata" itemprop="interactionStatistic" itemtype="https://schema.org/InteractionCounter" itemscope> <meta itemprop="userInteractionCount" content="0" /> <meta itemprop="interactionType" content="https://schema.org/LikeAction" /> </div> <div class="reactionsBar js-reactionsList "> </div> <div class="js-historyTarget message-historyTarget toggleTarget" data-href="trigger-href"></div> </footer> </div> </div> <div class="message-cell message-cell--vote"> <div class="message-column"> <div class="contentVote js-contentVote " data-xf-init="content-vote" data-content-id="post-1453713"> <meta itemprop="upvoteCount" content="0" /> <a href="javascript:" class="contentVote-vote is-disabled contentVote-vote--up " data-vote="up"><span class="u-srOnly">Upvote</span></a> <span class="contentVote-score 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href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453715" rel="nofollow" itemprop="url"> <time class="u-dt" dir="auto" datetime="2024-07-30T01:30:38-0700" data-time="1722328238" data-date-string="Jul 30, 2024" data-time-string="1:30 AM" title="Jul 30, 2024 at 1:30 AM" itemprop="datePublished">Jul 30, 2024</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453715" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1453715/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453715" rel="nofollow"> #7 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1453715" data-lb-caption-desc="camerart · Jul 30, 2024 at 1:30 AM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper">Hi,<br /> It appears that my 'old' tft screens need level shifters, so not a good start.<br /> I've ordered some later SPI ones.<br /> C</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> <div class="message-lastEdit"> Last edited: <time class="u-dt" dir="auto" datetime="2024-07-30T02:06:29-0700" data-time="1722330389" data-date-string="Jul 30, 2024" data-time-string="2:06 AM" title="Jul 30, 2024 at 2:06 AM" itemprop="dateModified">Jul 30, 2024</time> </div> </div> <footer class="message-footer"> <div class="message-microdata" itemprop="interactionStatistic" itemtype="https://schema.org/InteractionCounter" itemscope> <meta itemprop="userInteractionCount" content="0" /> <meta itemprop="interactionType" content="https://schema.org/LikeAction" /> </div> <div class="reactionsBar js-reactionsList "> </div> <div class="js-historyTarget message-historyTarget 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class="u-dt" dir="auto" datetime="2024-07-30T02:38:45-0700" data-time="1722332325" data-date-string="Jul 30, 2024" data-time-string="2:38 AM" title="Jul 30, 2024 at 2:38 AM" itemprop="datePublished">Jul 30, 2024</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453716" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1453716/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453716" rel="nofollow"> #8 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1453716" data-lb-caption-desc="Nigel Goodwin · Jul 30, 2024 at 2:38 AM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper"><blockquote data-attributes="member: 91879" data-quote="camerart" data-source="post: 1453715" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1453715" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1453715">camerart said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Hi,<br /> It appears that my 'old' tft screens need level shifters, so not a good start.<br /> I've ordered some later SPI ones.<br /> C </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>Most TFT screens are 3.3V, so you can either run your system at 3.3V, or add a 3.3V/5V converter - or you can buy TFT's with built-in converters, it's not a question of 'age', it's just a question of ordering the correct one for your needs.</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> <aside class="message-signature"> <div class="bbWrapper">PIC programmer software, and PIC Tutorials at:<br /> <a href="http://www.winpicprog.co.uk" target="_blank" class="link link--external" rel="noopener">http://www.winpicprog.co.uk</a></div> </aside> </div> <footer class="message-footer"> <div class="message-microdata" itemprop="interactionStatistic" itemtype="https://schema.org/InteractionCounter" itemscope> <meta itemprop="userInteractionCount" content="0" /> <meta itemprop="interactionType" content="https://schema.org/LikeAction" /> </div> <div class="reactionsBar js-reactionsList "> </div> <div class="js-historyTarget message-historyTarget toggleTarget" data-href="trigger-href"></div> </footer> </div> </div> <div class="message-cell message-cell--vote"> <div class="message-column"> <div class="contentVote js-contentVote " data-xf-init="content-vote" data-content-id="post-1453716"> <meta 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js-quickEditTarget"> <header class="message-attribution message-attribution--split"> <ul class="message-attribution-main listInline "> <li class="u-concealed"> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453717" rel="nofollow" itemprop="url"> <time class="u-dt" dir="auto" datetime="2024-07-30T03:04:23-0700" data-time="1722333863" data-date-string="Jul 30, 2024" data-time-string="3:04 AM" title="Jul 30, 2024 at 3:04 AM" itemprop="datePublished">Jul 30, 2024</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453717" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1453717/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453717" rel="nofollow"> #9 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1453717" data-lb-caption-desc="camerart · Jul 30, 2024 at 3:04 AM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper"><blockquote data-attributes="member: 10131" data-quote="Nigel Goodwin" data-source="post: 1453716" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1453716" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1453716">Nigel Goodwin said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Most TFT screens are 3.3V, so you can either run your system at 3.3V, or add a 3.3V/5V converter - or you can buy TFT's with built-in converters, it's not a question of 'age', it's just a question of ordering the correct one for your needs. </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>Hi N,<br /> I used the term 'old' meaning I bought them when I was young.<br /> <br /> I ordered new SPI ones, for simplicity.<br /> C</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> </div> <footer class="message-footer"> <div class="message-microdata" itemprop="interactionStatistic" itemtype="https://schema.org/InteractionCounter" itemscope> <meta itemprop="userInteractionCount" content="0" /> <meta itemprop="interactionType" content="https://schema.org/LikeAction" /> </div> <div class="reactionsBar js-reactionsList "> </div> <div class="js-historyTarget message-historyTarget toggleTarget" data-href="trigger-href"></div> </footer> </div> </div> <div class="message-cell message-cell--vote"> <div class="message-column"> <div class="contentVote js-contentVote " data-xf-init="content-vote" data-content-id="post-1453717"> <meta 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Goodwin</span></a></h4> <h5 class="userTitle message-userTitle" dir="auto" itemprop="jobTitle">Super Moderator</h5> <div class="userBanner userBanner userBanner--gray message-userBanner" itemprop="jobTitle"><span class="userBanner-before"></span><strong>Most Helpful Member</strong><span class="userBanner-after"></span></div> </div> <span class="message-userArrow"></span> </section> </div> <div class="message-cell message-cell--main"> <div class="message-main js-quickEditTarget"> <header class="message-attribution message-attribution--split"> <ul class="message-attribution-main listInline "> <li class="u-concealed"> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453718" rel="nofollow" itemprop="url"> <time class="u-dt" dir="auto" datetime="2024-07-30T03:36:21-0700" data-time="1722335781" data-date-string="Jul 30, 2024" data-time-string="3:36 AM" title="Jul 30, 2024 at 3:36 AM" itemprop="datePublished">Jul 30, 2024</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453718" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1453718/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453718" rel="nofollow"> #10 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1453718" data-lb-caption-desc="Nigel Goodwin · Jul 30, 2024 at 3:36 AM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper"><blockquote data-attributes="member: 91879" data-quote="camerart" data-source="post: 1453717" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1453717" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1453717">camerart said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Hi N,<br /> I used the term 'old' meaning I bought them when I was young.<br /> <br /> I ordered new SPI ones, for simplicity.<br /> C </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>Weren't the old ones SPI? - or had you specifically bought a different type?.</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> <aside class="message-signature"> <div class="bbWrapper">PIC programmer software, and PIC Tutorials at:<br /> <a href="http://www.winpicprog.co.uk" target="_blank" class="link link--external" rel="noopener">http://www.winpicprog.co.uk</a></div> </aside> </div> <footer class="message-footer"> <div 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</div> </div> </div> </div> </article> <article class="message message--post js-post js-inlineModContainer " data-author="DogFlu66" data-content="post-1453755" id="js-post-1453755" itemscope itemtype="https://schema.org/Answer" itemid="https://www.electro-tech-online.com/posts/1453755/"> <meta itemprop="parentItem" itemscope itemid="https://www.electro-tech-online.com/threads/display-tft-st7789-oshonsoft-basic.166219/" /> <span class="u-anchorTarget" id="post-1453755"></span> <div class="message-inner"> <div class="message-cell message-cell--user"> <section class="message-user" itemprop="author" itemscope itemtype="https://schema.org/Person" itemid="https://www.electro-tech-online.com/members/dogflu66.285107/"> <meta itemprop="url" content="https://www.electro-tech-online.com/members/dogflu66.285107/" /> <div class="message-avatar "> <div class="message-avatar-wrapper"> <a href="/members/dogflu66.285107/" class="avatar avatar--m" data-user-id="285107" data-xf-init="member-tooltip"> <img src="/data/avatars/m/285/285107.jpg?1554030602" alt="DogFlu66" class="avatar-u285107-m" width="96" height="96" loading="lazy" itemprop="image" /> </a> </div> </div> <div class="message-userDetails"> <h4 class="message-name"><a href="/members/dogflu66.285107/" class="username " dir="auto" data-user-id="285107" data-xf-init="member-tooltip"><span itemprop="name">DogFlu66</span></a></h4> <h5 class="userTitle message-userTitle" dir="auto" itemprop="jobTitle">Member</h5> </div> <span class="message-userArrow"></span> </section> </div> <div class="message-cell message-cell--main"> <div class="message-main js-quickEditTarget"> <header class="message-attribution message-attribution--split"> <ul class="message-attribution-main listInline "> <li class="u-concealed"> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453755" rel="nofollow" itemprop="url"> <time class="u-dt" dir="auto" datetime="2024-07-31T12:27:25-0700" data-time="1722454045" data-date-string="Jul 31, 2024" data-time-string="12:27 PM" title="Jul 31, 2024 at 12:27 PM" itemprop="datePublished">Jul 31, 2024</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453755" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1453755/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453755" rel="nofollow"> #11 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1453755" data-lb-caption-desc="DogFlu66 · Jul 31, 2024 at 12:27 PM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper">I'm still working on the subject, but I found that the tests are not good because the micro I use at 64Mhz internal clock when used from 16Mhz and consecutive pins of the same port are controlled (for example: PORTC.0 = 1, PORTC.1 = 0, etc) as outputs fail and do not stay at the designated value.<br /> So I have ordered other micros to replace them, although there is no problem in using the old micro with lower clock speeds or adding a NOP after each PORTx.x and it works perfectly at any speed. Unfortunately I dismantled the display before knowing this and started with other things so I have postponed it for September. But I was also waiting for two suggestions for improvements to the compiler, one of which has already been incorporated and is that functions allow more than 5 input arguments, currently up to 30, and another of lesser importance and is that tables can be made with a greater number of elements, at least 255, which until now is limited to just over 100.</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> </div> <footer class="message-footer"> <div class="message-microdata" itemprop="interactionStatistic" itemtype="https://schema.org/InteractionCounter" itemscope> <meta itemprop="userInteractionCount" content="0" /> <meta itemprop="interactionType" content="https://schema.org/LikeAction" /> </div> <div class="reactionsBar js-reactionsList "> </div> <div class="js-historyTarget message-historyTarget toggleTarget" data-href="trigger-href"></div> </footer> </div> </div> <div class="message-cell message-cell--vote"> <div class="message-column"> <div class="contentVote js-contentVote " data-xf-init="content-vote" data-content-id="post-1453755"> <meta itemprop="upvoteCount" content="0" /> <a href="javascript:" class="contentVote-vote is-disabled contentVote-vote--up " data-vote="up"><span class="u-srOnly">Upvote</span></a> <span class="contentVote-score js-voteCount" data-score="0">0</span> <a href="javascript:" class="contentVote-vote is-disabled contentVote-vote--down " data-vote="down"><span class="u-srOnly">Downvote</span></a> </div> </div> </div> </div> </article> <article class="message message--post js-post js-inlineModContainer " data-author="camerart" data-content="post-1453760" id="js-post-1453760" itemscope itemtype="https://schema.org/Answer" itemid="https://www.electro-tech-online.com/posts/1453760/"> <meta itemprop="parentItem" itemscope itemid="https://www.electro-tech-online.com/threads/display-tft-st7789-oshonsoft-basic.166219/" /> <span class="u-anchorTarget" id="post-1453760"></span> <div class="message-inner"> <div class="message-cell message-cell--user"> <section class="message-user" itemprop="author" itemscope itemtype="https://schema.org/Person" itemid="https://www.electro-tech-online.com/members/camerart.91879/"> <meta itemprop="url" content="https://www.electro-tech-online.com/members/camerart.91879/" /> <div class="message-avatar "> <div class="message-avatar-wrapper"> <a href="/members/camerart.91879/" class="avatar avatar--m" data-user-id="91879" data-xf-init="member-tooltip"> <img src="/data/avatars/m/91/91879.jpg?1410165967" alt="camerart" class="avatar-u91879-m" width="96" height="96" loading="lazy" itemprop="image" /> </a> </div> </div> <div class="message-userDetails"> <h4 class="message-name"><a href="/members/camerart.91879/" class="username " dir="auto" data-user-id="91879" data-xf-init="member-tooltip"><span itemprop="name">camerart</span></a></h4> <h5 class="userTitle message-userTitle" dir="auto" itemprop="jobTitle">Well-Known Member</h5> </div> <span class="message-userArrow"></span> </section> </div> <div class="message-cell message-cell--main"> <div class="message-main js-quickEditTarget"> <header class="message-attribution message-attribution--split"> <ul class="message-attribution-main listInline "> <li class="u-concealed"> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453760" rel="nofollow" itemprop="url"> <time class="u-dt" dir="auto" datetime="2024-07-31T13:27:04-0700" data-time="1722457624" data-date-string="Jul 31, 2024" data-time-string="1:27 PM" title="Jul 31, 2024 at 1:27 PM" itemprop="datePublished">Jul 31, 2024</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453760" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1453760/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453760" rel="nofollow"> #12 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1453760" data-lb-caption-desc="camerart · Jul 31, 2024 at 1:27 PM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper"><blockquote data-attributes="member: 10131" data-quote="Nigel Goodwin" data-source="post: 1453718" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1453718" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1453718">Nigel Goodwin said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Weren't the old ones SPI? - or had you specifically bought a different type?. </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>Hi N,<br /> At the time I bought them, I don't think I knew what SPI was. I just looked around and bought them from 'Open-smart'. I looked at them today, and I doubt they are SPI. I don't want to add comlication, so I just bought SPI ones. Should be here in 6 weeks <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /><br /> C</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> </div> <footer class="message-footer"> <div class="message-microdata" itemprop="interactionStatistic" itemtype="https://schema.org/InteractionCounter" itemscope> <meta itemprop="userInteractionCount" content="0" /> <meta itemprop="interactionType" content="https://schema.org/LikeAction" /> </div> <div class="reactionsBar js-reactionsList "> </div> <div class="js-historyTarget message-historyTarget toggleTarget" data-href="trigger-href"></div> </footer> </div> </div> <div class="message-cell message-cell--vote"> <div class="message-column"> <div class="contentVote js-contentVote " data-xf-init="content-vote" data-content-id="post-1453760"> <meta itemprop="upvoteCount" content="0" /> <a 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class="message-attribution message-attribution--split"> <ul class="message-attribution-main listInline "> <li class="u-concealed"> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453761" rel="nofollow" itemprop="url"> <time class="u-dt" dir="auto" datetime="2024-07-31T13:36:00-0700" data-time="1722458160" data-date-string="Jul 31, 2024" data-time-string="1:36 PM" title="Jul 31, 2024 at 1:36 PM" itemprop="datePublished">Jul 31, 2024</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453761" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1453761/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453761" rel="nofollow"> #13 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1453761" data-lb-caption-desc="camerart · Jul 31, 2024 at 1:36 PM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper"><blockquote data-attributes="member: 285107" data-quote="DogFlu66" data-source="post: 1453755" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1453755" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1453755">DogFlu66 said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> I'm still working on the subject, but I found that the tests are not good because the micro I use at 64Mhz internal clock when used from 16Mhz and consecutive pins of the same port are controlled (for example: PORTC.0 = 1, PORTC.1 = 0, etc) as outputs fail and do not stay at the designated value.<br /> So I have ordered other micros to replace them, although there is no problem in using the old micro with lower clock speeds or adding a NOP after each PORTx.x and it works perfectly at any speed. Unfortunately I dismantled the display before knowing this and started with other things so I have postponed it for September. But I was also waiting for two suggestions for improvements to the compiler, one of which has already been incorporated and is that functions allow more than 5 input arguments, currently up to 30, and another of lesser importance and is that tables can be made with a greater number of elements, at least 255, which until now is limited to just over 100. </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>Hi D,<br /> As you can see above, I've ordered some screens, which may be a while.<br /> <br /> I have PCBs for an other project with 18F46K20, that have Nokia screens, which are SPI, and I don't think it will take much to wire up the TFT screens in their place.<br /> <br /> Also I can use the programs I have that with your modifications will make it a little easier for me to read than yours, so I may be able to help a little or just test what you do.<br /> <br /> These PCBs have 8mHz crystals X4 PLL.<br /> C.</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> </div> <footer class="message-footer"> <div class="message-microdata" itemprop="interactionStatistic" itemtype="https://schema.org/InteractionCounter" itemscope> <meta itemprop="userInteractionCount" content="0" /> <meta itemprop="interactionType" content="https://schema.org/LikeAction" /> </div> <div class="reactionsBar js-reactionsList "> </div> <div class="js-historyTarget message-historyTarget toggleTarget" data-href="trigger-href"></div> </footer> </div> </div> <div class="message-cell message-cell--vote"> <div class="message-column"> <div class="contentVote js-contentVote " data-xf-init="content-vote" data-content-id="post-1453761"> <meta itemprop="upvoteCount" content="0" /> <a href="javascript:" class="contentVote-vote is-disabled contentVote-vote--up " data-vote="up"><span class="u-srOnly">Upvote</span></a> <span class="contentVote-score js-voteCount" data-score="0">0</span> <a href="javascript:" 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rel="nofollow" itemprop="url"> <time class="u-dt" dir="auto" datetime="2024-07-31T14:04:11-0700" data-time="1722459851" data-date-string="Jul 31, 2024" data-time-string="2:04 PM" title="Jul 31, 2024 at 2:04 PM" itemprop="datePublished">Jul 31, 2024</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453763" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1453763/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453763" rel="nofollow"> #14 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1453763" data-lb-caption-desc="DogFlu66 · Jul 31, 2024 at 2:04 PM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper">I use a lot of that same microcontroller but ending in 22, which is the same as the 20 but with more memory. I use it at 16Mhz x 4PLL with internal clock.<br /> <br /> I have taken advantage of an order of components for work and I have added a pair of Pic18F26K22 which are the ones I use at home, and it is the one that fails me from 16Mhz, and which I use at 16Mhz x 4PLL. But in my case they arrive in just 3 days because I have ordered them from Farnell Spain.</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> <div class="message-lastEdit"> Last edited: <time class="u-dt" dir="auto" datetime="2024-07-31T14:16:35-0700" data-time="1722460595" data-date-string="Jul 31, 2024" data-time-string="2:16 PM" title="Jul 31, 2024 at 2:16 PM" itemprop="dateModified">Jul 31, 2024</time> </div> </div> <footer class="message-footer"> <div class="message-microdata" itemprop="interactionStatistic" itemtype="https://schema.org/InteractionCounter" itemscope> <meta itemprop="userInteractionCount" content="0" /> <meta itemprop="interactionType" content="https://schema.org/LikeAction" /> </div> <div class="reactionsBar js-reactionsList "> </div> <div class="js-historyTarget message-historyTarget toggleTarget" data-href="trigger-href"></div> </footer> </div> </div> <div class="message-cell message-cell--vote"> <div class="message-column"> <div class="contentVote js-contentVote " data-xf-init="content-vote" data-content-id="post-1453763"> <meta itemprop="upvoteCount" content="0" /> <a href="javascript:" class="contentVote-vote is-disabled contentVote-vote--up " data-vote="up"><span class="u-srOnly">Upvote</span></a> <span class="contentVote-score js-voteCount" data-score="0">0</span> <a href="javascript:" class="contentVote-vote is-disabled contentVote-vote--down " data-vote="down"><span class="u-srOnly">Downvote</span></a> </div> </div> </div> </div> </article> <article class="message message--post js-post js-inlineModContainer " data-author="camerart" data-content="post-1453767" id="js-post-1453767" itemscope itemtype="https://schema.org/Answer" itemid="https://www.electro-tech-online.com/posts/1453767/"> <meta itemprop="parentItem" itemscope itemid="https://www.electro-tech-online.com/threads/display-tft-st7789-oshonsoft-basic.166219/" /> <span class="u-anchorTarget" id="post-1453767"></span> <div class="message-inner"> <div class="message-cell message-cell--user"> <section class="message-user" itemprop="author" itemscope itemtype="https://schema.org/Person" itemid="https://www.electro-tech-online.com/members/camerart.91879/"> <meta itemprop="url" content="https://www.electro-tech-online.com/members/camerart.91879/" /> <div class="message-avatar "> <div class="message-avatar-wrapper"> <a href="/members/camerart.91879/" class="avatar avatar--m" data-user-id="91879" data-xf-init="member-tooltip"> <img src="/data/avatars/m/91/91879.jpg?1410165967" alt="camerart" class="avatar-u91879-m" width="96" height="96" loading="lazy" itemprop="image" /> </a> </div> </div> <div class="message-userDetails"> <h4 class="message-name"><a href="/members/camerart.91879/" class="username " dir="auto" data-user-id="91879" data-xf-init="member-tooltip"><span itemprop="name">camerart</span></a></h4> <h5 class="userTitle message-userTitle" dir="auto" itemprop="jobTitle">Well-Known Member</h5> </div> <span class="message-userArrow"></span> </section> </div> <div class="message-cell message-cell--main"> <div class="message-main js-quickEditTarget"> <header class="message-attribution message-attribution--split"> <ul class="message-attribution-main listInline "> <li class="u-concealed"> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453767" rel="nofollow" itemprop="url"> <time class="u-dt" dir="auto" datetime="2024-07-31T15:05:18-0700" data-time="1722463518" data-date-string="Jul 31, 2024" data-time-string="3:05 PM" title="Jul 31, 2024 at 3:05 PM" itemprop="datePublished">Jul 31, 2024</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453767" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1453767/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453767" rel="nofollow"> #15 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1453767" data-lb-caption-desc="camerart · Jul 31, 2024 at 3:05 PM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper"><blockquote data-attributes="member: 285107" data-quote="DogFlu66" data-source="post: 1453763" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1453763" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1453763">DogFlu66 said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> I use a lot of that same microcontroller but ending in 22, which is the same as the 20 but with more memory. I use it at 16Mhz x 4PLL with internal clock.<br /> <br /> I have taken advantage of an order of components for work and I have added a pair of Pic18F26K22 which are the ones I use at home, and it is the one that fails me from 16Mhz, and which I use at 16Mhz x 4PLL. But in my case they arrive in just 3 days because I have ordered them from Farnell Spain. </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>Hi D,<br /> Supposedly, the internal clock is fine, but I had issues many years ago, so I added XTLs, and now I don't get clock issues any more, but my max is 32mHz. I'm no expert. I think both sppeds will be ok.<br /> C</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> </div> <footer class="message-footer"> <div class="message-microdata" itemprop="interactionStatistic" itemtype="https://schema.org/InteractionCounter" itemscope> <meta itemprop="userInteractionCount" content="0" /> <meta itemprop="interactionType" content="https://schema.org/LikeAction" /> </div> <div class="reactionsBar js-reactionsList "> </div> <div class="js-historyTarget message-historyTarget toggleTarget" data-href="trigger-href"></div> </footer> </div> </div> <div class="message-cell message-cell--vote"> <div class="message-column"> <div class="contentVote js-contentVote " data-xf-init="content-vote" data-content-id="post-1453767"> <meta itemprop="upvoteCount" content="0" /> <a href="javascript:" class="contentVote-vote is-disabled contentVote-vote--up " data-vote="up"><span class="u-srOnly">Upvote</span></a> <span class="contentVote-score js-voteCount" 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class="userBanner-before"></span><strong>Most Helpful Member</strong><span class="userBanner-after"></span></div> </div> <span class="message-userArrow"></span> </section> </div> <div class="message-cell message-cell--main"> <div class="message-main js-quickEditTarget"> <header class="message-attribution message-attribution--split"> <ul class="message-attribution-main listInline "> <li class="u-concealed"> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453775" rel="nofollow" itemprop="url"> <time class="u-dt" dir="auto" datetime="2024-08-01T01:17:59-0700" data-time="1722500279" data-date-string="Aug 1, 2024" data-time-string="1:17 AM" title="Aug 1, 2024 at 1:17 AM" itemprop="datePublished">Aug 1, 2024</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453775" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1453775/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453775" rel="nofollow"> #16 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1453775" data-lb-caption-desc="Nigel Goodwin · Aug 1, 2024 at 1:17 AM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper"><blockquote data-attributes="member: 91879" data-quote="camerart" data-source="post: 1453767" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1453767" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1453767">camerart said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Hi D,<br /> Supposedly, the internal clock is fine, but I had issues many years ago, so I added XTLs, and now I don't get clock issues any more, but my max is 32mHz. I'm no expert. I think both sppeds will be ok.<br /> C </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>Using TFT's requires the highest speed you can get, and running the SPI as fast as the TFT will stand - however, running the PIC at 64MHz may require backing the SPI speed down a notch, as they are somewhat limited.</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> <aside class="message-signature"> <div class="bbWrapper">PIC programmer software, and PIC Tutorials at:<br /> <a href="http://www.winpicprog.co.uk" target="_blank" class="link link--external" rel="noopener">http://www.winpicprog.co.uk</a></div> </aside> </div> <footer class="message-footer"> <div class="message-microdata" itemprop="interactionStatistic" itemtype="https://schema.org/InteractionCounter" itemscope> <meta itemprop="userInteractionCount" content="0" /> <meta itemprop="interactionType" 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itemtype="https://schema.org/Answer" itemid="https://www.electro-tech-online.com/posts/1453788/"> <meta itemprop="parentItem" itemscope itemid="https://www.electro-tech-online.com/threads/display-tft-st7789-oshonsoft-basic.166219/" /> <span class="u-anchorTarget" id="post-1453788"></span> <div class="message-inner"> <div class="message-cell message-cell--user"> <section class="message-user" itemprop="author" itemscope itemtype="https://schema.org/Person" itemid="https://www.electro-tech-online.com/members/camerart.91879/"> <meta itemprop="url" content="https://www.electro-tech-online.com/members/camerart.91879/" /> <div class="message-avatar "> <div class="message-avatar-wrapper"> <a href="/members/camerart.91879/" class="avatar avatar--m" data-user-id="91879" data-xf-init="member-tooltip"> <img src="/data/avatars/m/91/91879.jpg?1410165967" alt="camerart" class="avatar-u91879-m" width="96" height="96" loading="lazy" itemprop="image" /> </a> </div> </div> <div class="message-userDetails"> <h4 class="message-name"><a href="/members/camerart.91879/" class="username " dir="auto" data-user-id="91879" data-xf-init="member-tooltip"><span itemprop="name">camerart</span></a></h4> <h5 class="userTitle message-userTitle" dir="auto" itemprop="jobTitle">Well-Known Member</h5> </div> <span class="message-userArrow"></span> </section> </div> <div class="message-cell message-cell--main"> <div class="message-main js-quickEditTarget"> <header class="message-attribution message-attribution--split"> <ul class="message-attribution-main listInline "> <li class="u-concealed"> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453788" rel="nofollow" itemprop="url"> <time class="u-dt" dir="auto" datetime="2024-08-01T03:22:45-0700" data-time="1722507765" data-date-string="Aug 1, 2024" data-time-string="3:22 AM" title="Aug 1, 2024 at 3:22 AM" itemprop="datePublished">Aug 1, 2024</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453788" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1453788/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453788" rel="nofollow"> #17 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1453788" data-lb-caption-desc="camerart · Aug 1, 2024 at 3:22 AM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper"><blockquote data-attributes="member: 10131" data-quote="Nigel Goodwin" data-source="post: 1453775" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1453775" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1453775">Nigel Goodwin said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Using TFT's requires the highest speed you can get, and running the SPI as fast as the TFT will stand - however, running the PIC at 64MHz may require backing the SPI speed down a notch, as they are somewhat limited. </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>Hi N,<br /> Ok! I guess that they will run slower, but not efficiently, is this correct?<br /> C.</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> </div> <footer class="message-footer"> <div class="message-microdata" itemprop="interactionStatistic" itemtype="https://schema.org/InteractionCounter" itemscope> <meta itemprop="userInteractionCount" content="0" /> <meta itemprop="interactionType" content="https://schema.org/LikeAction" /> </div> <div class="reactionsBar js-reactionsList "> </div> <div class="js-historyTarget message-historyTarget toggleTarget" data-href="trigger-href"></div> </footer> </div> </div> <div class="message-cell message-cell--vote"> <div class="message-column"> <div class="contentVote js-contentVote " data-xf-init="content-vote" data-content-id="post-1453788"> <meta itemprop="upvoteCount" content="0" /> <a href="javascript:" class="contentVote-vote is-disabled contentVote-vote--up " data-vote="up"><span class="u-srOnly">Upvote</span></a> <span 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class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1453795/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453795" rel="nofollow"> #18 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1453795" data-lb-caption-desc="Nigel Goodwin · Aug 1, 2024 at 3:58 AM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper"><blockquote data-attributes="member: 91879" data-quote="camerart" data-source="post: 1453788" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1453788" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1453788">camerart said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Hi N,<br /> Ok! I guess that they will run slower, but not efficiently, is this correct?<br /> C. </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>If you run them slower, the display updates slower, and there's a considerable amount of data to transfer to a TFT - the small Nokia LCD displays are far easier, as they are only B&W, and much lower resolution, so updates are much faster.</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> <aside class="message-signature"> <div class="bbWrapper">PIC programmer software, and PIC Tutorials at:<br /> <a href="http://www.winpicprog.co.uk" target="_blank" class="link link--external" rel="noopener">http://www.winpicprog.co.uk</a></div> </aside> </div> <footer class="message-footer"> <div class="message-microdata" itemprop="interactionStatistic" itemtype="https://schema.org/InteractionCounter" itemscope> <meta itemprop="userInteractionCount" content="0" /> 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<div class="message-userDetails"> <h4 class="message-name"><a href="/members/camerart.91879/" class="username " dir="auto" data-user-id="91879" data-xf-init="member-tooltip"><span itemprop="name">camerart</span></a></h4> <h5 class="userTitle message-userTitle" dir="auto" itemprop="jobTitle">Well-Known Member</h5> </div> <span class="message-userArrow"></span> </section> </div> <div class="message-cell message-cell--main"> <div class="message-main js-quickEditTarget"> <header class="message-attribution message-attribution--split"> <ul class="message-attribution-main listInline "> <li class="u-concealed"> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453809" rel="nofollow" itemprop="url"> <time class="u-dt" dir="auto" datetime="2024-08-01T07:02:06-0700" data-time="1722520926" data-date-string="Aug 1, 2024" data-time-string="7:02 AM" title="Aug 1, 2024 at 7:02 AM" itemprop="datePublished">Aug 1, 2024</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453809" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1453809/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453809" rel="nofollow"> #19 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1453809" data-lb-caption-desc="camerart · Aug 1, 2024 at 7:02 AM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper"><blockquote data-attributes="member: 10131" data-quote="Nigel Goodwin" data-source="post: 1453795" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1453795" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1453795">Nigel Goodwin said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> If you run them slower, the display updates slower, and there's a considerable amount of data to transfer to a TFT - the small Nokia LCD displays are far easier, as they are only B&W, and much lower resolution, so updates are much faster. </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>Hi N,<br /> Ok, that's fine, at least I'll be able to test 'D's CODE.<br /> C</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> </div> <footer class="message-footer"> <div class="message-microdata" itemprop="interactionStatistic" itemtype="https://schema.org/InteractionCounter" itemscope> <meta itemprop="userInteractionCount" content="0" /> <meta 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class="message-attribution-main listInline "> <li class="u-concealed"> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453812" rel="nofollow" itemprop="url"> <time class="u-dt" dir="auto" datetime="2024-08-01T07:12:00-0700" data-time="1722521520" data-date-string="Aug 1, 2024" data-time-string="7:12 AM" title="Aug 1, 2024 at 7:12 AM" itemprop="datePublished">Aug 1, 2024</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453812" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1453812/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/display-tft-st7789-oshonsoft-basic.166219/post-1453812" rel="nofollow"> #20 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1453812" data-lb-caption-desc="Nigel Goodwin · Aug 1, 2024 at 7:12 AM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper"><blockquote data-attributes="member: 91879" data-quote="camerart" data-source="post: 1453809" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1453809" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1453809">camerart said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Hi N,<br /> Ok, that's fine, at least I'll be able to test 'D's CODE.<br /> C </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote><br /> They even work using software SPI, but the speed is appalling <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin :D" loading="lazy" data-shortname=":D" /> <br /> <br /> It is useful though for testing purposes, or when you inadvertently allocated the PCB SPI pins to non-SPI pins on the PIC, while you can allocate most peripheral pins to various of the physical pins it's not universal, and varies from PIC to PIC.</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> <aside class="message-signature"> <div class="bbWrapper">PIC programmer software, and PIC Tutorials at:<br /> <a href="http://www.winpicprog.co.uk" target="_blank" class="link link--external" rel="noopener">http://www.winpicprog.co.uk</a></div> </aside> </div> <footer class="message-footer"> <div class="message-microdata" itemprop="interactionStatistic" itemtype="https://schema.org/InteractionCounter" itemscope> <meta itemprop="userInteractionCount" content="0" /> 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Are you sure you want to submit this form?", attach: "Attach files", rich_text_box: "Rich text box", close: "Close", link_copied_to_clipboard: "Link copied to clipboard.", text_copied_to_clipboard: "Text copied to clipboard.", loading: "Loading…", you_have_exceeded_maximum_number_of_selectable_items: "You have exceeded the maximum number of selectable items.", processing: "Processing", 'processing...': "Processing…", showing_x_of_y_items: "Showing {count} of {total} items", showing_all_items: "Showing all items", no_items_to_display: "No items to display", number_button_up: "Increase", number_button_down: "Decrease", push_enable_notification_title: "Push notifications enabled successfully at Electronics Forum (Circuits, Projects and Microcontrollers)", push_enable_notification_body: "Thank you for enabling push notifications!", pull_down_to_refresh: "Pull down to refresh", release_to_refresh: "Release to refresh", refreshing: "Refreshing…" , "svStandardLib_time.day": "{count} day", "svStandardLib_time.days": "{count} days", "svStandardLib_time.hour": "{count} hour", "svStandardLib_time.hours": "{count} hours", "svStandardLib_time.minute": "{count} minutes", "svStandardLib_time.minutes": "{count} minutes", "svStandardLib_time.month": "{count} month", "svStandardLib_time.months": "{count} months", "svStandardLib_time.second": "{count} second", "svStandardLib_time.seconds": "{count} seconds", "svStandardLib_time.week": "time.week", "svStandardLib_time.weeks": "{count} weeks", "svStandardLib_time.year": "{count} year", "svStandardLib_time.years": "{count} years" }); </script> <form style="display:none" hidden="hidden"> <input type="text" name="_xfClientLoadTime" value="" id="_xfClientLoadTime" title="_xfClientLoadTime" tabindex="-1" /> </form>    <div id='div-gpt-eto_wallpaper'> <script> googletag.cmd.push(function() { googletag.display('div-gpt-eto_wallpaper'); }); </script> </div>  <script type="application/ld+json"> { "@context": "https://schema.org", "@type": "QAPage", "url": "https://www.electro-tech-online.com/threads/display-tft-st7789-oshonsoft-basic.166219/", "mainEntity": { "@type": "Question", "@id": "https://www.electro-tech-online.com/threads/display-tft-st7789-oshonsoft-basic.166219/", "name": "Display TFT ST7789 (OshonSoft Basic).", "datePublished": "2024-06-07T09:10:54+00:00", "url": "https://www.electro-tech-online.com/threads/display-tft-st7789-oshonsoft-basic.166219/", "text": "I leave the library to use ST7789 TFT display, I have translated one that is in C language. But unfortunately I have not been able to get it to work yet. I leave the files in case someone with more experience with these displays can review it.", "answerCount": 368, "upvoteCount": 0, "author": { "@type": "Person", "@id": "https://www.electro-tech-online.com/members/dogflu66.285107/", "name": "DogFlu66", "url": "https://www.electro-tech-online.com/members/dogflu66.285107/" }, "suggestedAnswer": [ { "@type": "Answer", "datePublished": "2025-01-21T09:03:16+00:00", "url": "https://www.electro-tech-online.com/posts/1459790/", "text": "Look at the electrical specs.. MAX is 4.5v so running at 3.8v would work fine.", "upvoteCount": 0, "author": { "@type": "Person", "@id": "https://www.electro-tech-online.com/members/ian-rogers.163748/", "name": "Ian Rogers", "url": "https://www.electro-tech-online.com/members/ian-rogers.163748/" } }, { "@type": "Answer", "datePublished": "2025-01-20T18:51:08+00:00", "url": "https://www.electro-tech-online.com/posts/1459777/", "text": "No.. The max on the pic18f46k20 is 4.2V Max! So I can run it from a 18650 3.7v battery ( which is 4.2v really) and I paralleled two diodes to bring it down to 3.8v (ish).. \n\nPullups do nothing and caps will increase the already bad slew... The shortest wires ever and that increased voltage seems to work.\n\nHi I,\nI checked the comparison in #362 and the D/S and both say 3.6V.\nC", "upvoteCount": 0, "author": { "@type": "Person", "@id": "https://www.electro-tech-online.com/members/camerart.91879/", "name": "camerart", "url": "https://www.electro-tech-online.com/members/camerart.91879/" } }, { "@type": "Answer", "datePublished": "2025-01-20T10:23:49+00:00", "url": "https://www.electro-tech-online.com/posts/1459762/", "text": "No.. The max on the pic18f46k20 is 4.2V Max! So I can run it from a 18650 3.7v battery ( which is 4.2v really) and I paralleled two diodes to bring it down to 3.8v (ish).. \n\nPullups do nothing and caps will increase the already bad slew... The shortest wires ever and that increased voltage seems to work.", "upvoteCount": 0, "author": { "@type": "Person", "@id": "https://www.electro-tech-online.com/members/ian-rogers.163748/", "name": "Ian Rogers", "url": "https://www.electro-tech-online.com/members/ian-rogers.163748/" } } ] }, "publisher": { "@type": "Organization", "name": "Electronics Forum (Circuits, Projects and Microcontrollers)", "description": "An electronics forum to talk all about circuits and projects.", "url": "https://www.electro-tech-online.com" } } </script>  <noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-MMC9PJ9" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>   <noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-KLX5R59" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>  <script> $(function(){ var notice = $('.xb-welcome-notice'); if(notice.length){ var cookie = XF.Cookie.get('hide_welcome_notice'); if(!cookie){ XF.Cookie.set('hide_welcome_notice', Date.now()); notice.show(); } else if ((Date.now() - cookie) > 8.64e+7){ XF.Cookie.set('hide_welcome_notice', Date.now()); notice.show(); } else { notice.hide(); } } }); </script> </div> </body> </html>

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