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I2C Interface Tutorial from Hack-A-Day | 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">I2C Interface Tutorial from Hack-A-Day</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/for-the-popcorn.315620/" class="username u-concealed" dir="auto" data-user-id="315620" data-xf-init="member-tooltip">For The Popcorn</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/i2c-interface-tutorial-from-hack-a-day.166392/" class="u-concealed"><time class="u-dt" dir="auto" datetime="2024-08-07T20:59:36-0700" data-time="1723089576" data-date-string="Aug 7, 2024" data-time-string="8:59 PM" title="Aug 7, 2024 at 8:59 PM">Aug 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="" data-type="post" data-href="/inline-mod/" data-search-target="*"> <span class="u-anchorTarget" id="posts"></span> <div class="block-outer"></div> <div class="block-outer js-threadStatusField"></div> <div class="block-container lbContainer" data-xf-init="lightbox select-to-quote" data-message-selector=".js-post" data-lb-id="thread-166392" data-lb-universal="0"> <div class="block-body js-replyNewMessageContainer"> <article class="message message--post js-post js-inlineModContainer " data-author="For The Popcorn" data-content="post-1454086" id="js-post-1454086" > <span class="u-anchorTarget" id="post-1454086"></span> <div class="message-inner"> <div class="message-cell message-cell--user"> <section class="message-user" > <div class="message-avatar message-avatar--online"> <div class="message-avatar-wrapper"> <a href="/members/for-the-popcorn.315620/" class="avatar avatar--m avatar--default avatar--default--dynamic" data-user-id="315620" data-xf-init="member-tooltip" style="background-color: #0f0f3d; color: #3333cc"> <span class="avatar-u315620-m" role="img" aria-label="For The Popcorn">F</span> </a> <span class="message-avatar-online" tabindex="0" data-xf-init="tooltip" data-trigger="auto" title="Online now"></span> </div> </div> <div class="message-userDetails"> <h4 class="message-name"><a href="/members/for-the-popcorn.315620/" class="username " dir="auto" data-user-id="315620" data-xf-init="member-tooltip">For The Popcorn</a></h4> <h5 class="userTitle message-userTitle" dir="auto">Well-Known Member</h5> <div class="userBanner userBanner userBanner--gray message-userBanner"><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/i2c-interface-tutorial-from-hack-a-day.166392/post-1454086" rel="nofollow" > <time class="u-dt" dir="auto" datetime="2024-08-07T20:59:36-0700" data-time="1723089576" data-date-string="Aug 7, 2024" data-time-string="8:59 PM" title="Aug 7, 2024 at 8:59 PM">Aug 7, 2024</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/i2c-interface-tutorial-from-hack-a-day.166392/post-1454086" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1454086/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/i2c-interface-tutorial-from-hack-a-day.166392/post-1454086" rel="nofollow"> #1 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1454086" data-lb-caption-desc="For The Popcorn · Aug 7, 2024 at 8:59 PM"> <article class="message-body js-selectToQuote"> <div > <div class="bbWrapper">Hack-A-Day has <a href="https://hackaday.com/2024/08/07/i2c-for-hackers-the-basics/" target="_blank" class="link link--external" rel="nofollow ugc noopener">a good tutorial on using I2C interfaced devices</a>. These include RTC modules, port expanders and wealth of other devices.</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> <aside class="message-signature"> <div class="bbWrapper">Please visit Jon's Imaginarium at jons.fyi for tips, ideas, reference info and a lot more about electronics, laser cutting and other stuff.</div> </aside> </div> <footer class="message-footer"> <div class="reactionsBar js-reactionsList is-active"> <ul class="reactionSummary"> <li><span class="reaction reaction--small reaction--1" data-reaction-id="1"><i aria-hidden="true"></i><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="reaction-sprite js-reaction" alt="Like" title="Like" /></span></li> </ul> <span class="u-srOnly">Reactions:</span> <a class="reactionsBar-link" href="/posts/1454086/reactions" data-xf-click="overlay" data-cache="false" rel="nofollow"><bdi>schmitt trigger</bdi></a> </div> <div class="js-historyTarget message-historyTarget toggleTarget" data-href="trigger-href"></div> </footer> </div> </div> </div> </article> <article class="message message--post js-post js-inlineModContainer " data-author="glossywhite" data-content="post-1457820" id="js-post-1457820" itemscope itemtype="https://schema.org/Comment" itemid="https://www.electro-tech-online.com/posts/1457820/"> <meta itemprop="parentItem" itemscope itemid="https://www.electro-tech-online.com/threads/i2c-interface-tutorial-from-hack-a-day.166392/" /> <span class="u-anchorTarget" id="post-1457820"></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/glossywhite.251552/"> <meta itemprop="url" content="https://www.electro-tech-online.com/members/glossywhite.251552/" /> <div class="message-avatar "> <div class="message-avatar-wrapper"> <a href="/members/glossywhite.251552/" class="avatar avatar--m avatar--default avatar--default--dynamic" data-user-id="251552" data-xf-init="member-tooltip" style="background-color: #99cc33; color: #2e3d0f"> <span class="avatar-u251552-m" role="img" aria-label="glossywhite">G</span> </a> </div> </div> <div class="message-userDetails"> <h4 class="message-name"><a href="/members/glossywhite.251552/" class="username " dir="auto" data-user-id="251552" data-xf-init="member-tooltip"><span itemprop="name">glossywhite</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/i2c-interface-tutorial-from-hack-a-day.166392/post-1457820" rel="nofollow" itemprop="url"> <time class="u-dt" dir="auto" datetime="2024-11-24T20:02:39-0800" data-time="1732507359" data-date-string="Nov 24, 2024" data-time-string="8:02 PM" title="Nov 24, 2024 at 8:02 PM" itemprop="datePublished">Sunday at 8:02 PM</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/i2c-interface-tutorial-from-hack-a-day.166392/post-1457820" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1457820/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/i2c-interface-tutorial-from-hack-a-day.166392/post-1457820" rel="nofollow"> #2 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1457820" data-lb-caption-desc="glossywhite · Nov 24, 2024 at 8:02 PM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper">Thank you SO much, this is my current subject of interest. God bless you <img class="smilie smilie--emoji" loading="lazy" alt="☦️" title="Orthodox cross :orthodox_cross:" src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/2626.png" data-shortname=":orthodox_cross:" /></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="1" /> <meta itemprop="interactionType" content="https://schema.org/LikeAction" /> </div> <div class="reactionsBar js-reactionsList is-active"> <ul class="reactionSummary"> <li><span class="reaction reaction--small reaction--1" data-reaction-id="1"><i aria-hidden="true"></i><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="reaction-sprite js-reaction" alt="Like" title="Like" /></span></li> </ul> <span class="u-srOnly">Reactions:</span> <a class="reactionsBar-link" href="/posts/1457820/reactions" data-xf-click="overlay" data-cache="false" rel="nofollow"><bdi>For The Popcorn</bdi></a> </div> <div class="js-historyTarget message-historyTarget toggleTarget" data-href="trigger-href"></div> </footer> </div> </div> </div> </article> <article class="message message--post js-post js-inlineModContainer " data-author="For The Popcorn" data-content="post-1457821" id="js-post-1457821" itemscope itemtype="https://schema.org/Comment" itemid="https://www.electro-tech-online.com/posts/1457821/"> <meta itemprop="parentItem" itemscope itemid="https://www.electro-tech-online.com/threads/i2c-interface-tutorial-from-hack-a-day.166392/" /> <span class="u-anchorTarget" id="post-1457821"></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/for-the-popcorn.315620/"> <meta itemprop="url" content="https://www.electro-tech-online.com/members/for-the-popcorn.315620/" /> <div class="message-avatar message-avatar--online"> <div class="message-avatar-wrapper"> <a href="/members/for-the-popcorn.315620/" class="avatar avatar--m avatar--default avatar--default--dynamic" data-user-id="315620" data-xf-init="member-tooltip" style="background-color: #0f0f3d; color: #3333cc"> <span class="avatar-u315620-m" role="img" aria-label="For The Popcorn">F</span> </a> <span class="message-avatar-online" tabindex="0" data-xf-init="tooltip" data-trigger="auto" title="Online now"></span> </div> </div> <div class="message-userDetails"> <h4 class="message-name"><a href="/members/for-the-popcorn.315620/" class="username " dir="auto" data-user-id="315620" data-xf-init="member-tooltip"><span itemprop="name">For The Popcorn</span></a></h4> <h5 class="userTitle message-userTitle" dir="auto" itemprop="jobTitle">Well-Known Member</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/i2c-interface-tutorial-from-hack-a-day.166392/post-1457821" rel="nofollow" itemprop="url"> <time class="u-dt" dir="auto" datetime="2024-11-25T00:02:29-0800" data-time="1732521749" data-date-string="Nov 25, 2024" data-time-string="12:02 AM" title="Nov 25, 2024 at 12:02 AM" itemprop="datePublished">Monday at 12:02 AM</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/i2c-interface-tutorial-from-hack-a-day.166392/post-1457821" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1457821/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/i2c-interface-tutorial-from-hack-a-day.166392/post-1457821" rel="nofollow"> #3 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1457821" data-lb-caption-desc="For The Popcorn · Nov 25, 2024 at 12:02 AM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper">Thank you for the comment. It's nice to know somebody appreciates things like this.</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> <aside class="message-signature"> <div class="bbWrapper">Please visit Jon's Imaginarium at jons.fyi for tips, ideas, reference info and a lot more about electronics, laser cutting and other stuff.</div> </aside> </div> <footer class="message-footer"> <div class="message-microdata" itemprop="interactionStatistic" itemtype="https://schema.org/InteractionCounter" itemscope> <meta itemprop="userInteractionCount" content="1" /> <meta itemprop="interactionType" content="https://schema.org/LikeAction" /> </div> <div class="reactionsBar js-reactionsList is-active"> <ul class="reactionSummary"> <li><span class="reaction reaction--small reaction--1" data-reaction-id="1"><i aria-hidden="true"></i><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="reaction-sprite js-reaction" alt="Like" title="Like" /></span></li> </ul> <span class="u-srOnly">Reactions:</span> <a class="reactionsBar-link" href="/posts/1457821/reactions" data-xf-click="overlay" data-cache="false" rel="nofollow"><bdi>glossywhite</bdi></a> </div> <div class="js-historyTarget message-historyTarget toggleTarget" data-href="trigger-href"></div> </footer> </div> </div> </div> </article> <article class="message message--post js-post js-inlineModContainer " data-author="glossywhite" data-content="post-1457825" id="js-post-1457825" itemscope itemtype="https://schema.org/Comment" itemid="https://www.electro-tech-online.com/posts/1457825/"> <meta itemprop="parentItem" itemscope itemid="https://www.electro-tech-online.com/threads/i2c-interface-tutorial-from-hack-a-day.166392/" /> <span class="u-anchorTarget" id="post-1457825"></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/glossywhite.251552/"> <meta itemprop="url" content="https://www.electro-tech-online.com/members/glossywhite.251552/" /> <div class="message-avatar "> <div class="message-avatar-wrapper"> <a href="/members/glossywhite.251552/" class="avatar avatar--m avatar--default avatar--default--dynamic" data-user-id="251552" data-xf-init="member-tooltip" style="background-color: #99cc33; color: #2e3d0f"> <span class="avatar-u251552-m" role="img" aria-label="glossywhite">G</span> </a> </div> </div> <div class="message-userDetails"> <h4 class="message-name"><a href="/members/glossywhite.251552/" class="username " dir="auto" data-user-id="251552" data-xf-init="member-tooltip"><span itemprop="name">glossywhite</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/i2c-interface-tutorial-from-hack-a-day.166392/post-1457825" rel="nofollow" itemprop="url"> <time class="u-dt" dir="auto" datetime="2024-11-25T01:15:08-0800" data-time="1732526108" data-date-string="Nov 25, 2024" data-time-string="1:15 AM" title="Nov 25, 2024 at 1:15 AM" itemprop="datePublished">Monday at 1:15 AM</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/i2c-interface-tutorial-from-hack-a-day.166392/post-1457825" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1457825/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/i2c-interface-tutorial-from-hack-a-day.166392/post-1457825" rel="nofollow"> #4 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1457825" data-lb-caption-desc="glossywhite · Nov 25, 2024 at 1:15 AM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper"><blockquote data-attributes="member: 315620" data-quote="For The Popcorn" data-source="post: 1457821" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1457821" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1457821">For The Popcorn said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Thank you for the comment. It's nice to know somebody appreciates things like this. </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>You're welcome. It's kind to show appreciation! Have a smashing week <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /><br /> <br /> Matthew.</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="1" /> <meta itemprop="interactionType" content="https://schema.org/LikeAction" /> </div> <div class="reactionsBar js-reactionsList is-active"> <ul class="reactionSummary"> <li><span class="reaction reaction--small reaction--1" data-reaction-id="1"><i aria-hidden="true"></i><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="reaction-sprite js-reaction" alt="Like" title="Like" /></span></li> </ul> <span 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aria-hidden="true"></i> </a> </li> <li> <a href="/threads/i2c-interface-tutorial-from-hack-a-day.166392/post-1457931" rel="nofollow"> #5 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1457931" data-lb-caption-desc="aliarifat794 · Nov 30, 2024 at 7:42 AM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper">Thanks for sharing.</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="1" /> <meta itemprop="interactionType" content="https://schema.org/LikeAction" /> </div> <div class="reactionsBar js-reactionsList is-active"> <ul class="reactionSummary"> <li><span class="reaction reaction--small reaction--1" 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