please help, i need this circuit to work :( | Electronics Forum (Circuits, Projects and Microcontrollers)

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Registration is free. <a href="/register">Click here to register now</a>. </div> </li> </ul> <center><div id='div-gpt-eto-header'> <script> googletag.cmd.push(function() { googletag.display('div-gpt-eto-header'); }); </script> </div></center> <div class="p-breadcrumbs--parent "> <ul class="p-breadcrumbs " itemscope itemtype="https://schema.org/BreadcrumbList"> <li itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem"> <a href="/#electronics-forums.3" itemprop="item"> <span itemprop="name">Electronics Forums</span> </a> <meta itemprop="position" content="1" /> </li> <li itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem"> <a href="/forums/general-electronics-chat/" itemprop="item"> <span itemprop="name">General Electronics Chat</span> </a> <meta itemprop="position" content="2" /> </li> </ul> </div> <noscript class="js-jsWarning"><div class="blockMessage blockMessage--important blockMessage--iconic u-noJsOnly">JavaScript is disabled. 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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">please help, i need this circuit to work :(</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/timmychangga.323239/" class="username u-concealed" dir="auto" data-user-id="323239" data-xf-init="member-tooltip">timmychangga</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/please-help-i-need-this-circuit-to-work.165504/" class="u-concealed"><time class="u-dt" dir="auto" datetime="2023-11-11T15:13:44-0800" data-time="1699744424" data-date-string="Nov 11, 2023" data-time-string="3:13 PM" title="Nov 11, 2023 at 3:13 PM">Nov 11, 2023</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 block--close" data-xf-init="lightbox select-to-quote" data-message-selector=".js-post" data-lb-id="thread-165504"> <div class="block-outer"> <dl class="blockStatus"> <dt>Status</dt> <dd class="blockStatus-message blockStatus-message--locked"> Not open for further replies. </dd> </dl> </div> <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="timmychangga" data-content="post-1444163" id="js-post-1444163" > <span class="u-anchorTarget" id="post-1444163"></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/timmychangga.323239/" class="avatar avatar--m avatar--default avatar--default--dynamic" data-user-id="323239" data-xf-init="member-tooltip" style="background-color: #995cd6; color: #401a66"> <span class="avatar-u323239-m" role="img" aria-label="timmychangga">T</span> </a> </div> </div> <div class="message-userDetails"> <h4 class="message-name"><a href="/members/timmychangga.323239/" class="username " dir="auto" data-user-id="323239" data-xf-init="member-tooltip">timmychangga</a></h4> <h5 class="userTitle message-userTitle" dir="auto">New 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/please-help-i-need-this-circuit-to-work.165504/post-1444163" rel="nofollow" > <time class="u-dt" dir="auto" datetime="2023-11-11T15:13:44-0800" data-time="1699744424" data-date-string="Nov 11, 2023" data-time-string="3:13 PM" title="Nov 11, 2023 at 3:13 PM">Nov 11, 2023</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/please-help-i-need-this-circuit-to-work.165504/post-1444163" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1444163/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/please-help-i-need-this-circuit-to-work.165504/post-1444163" rel="nofollow"> #1 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1444163" data-lb-caption-desc="timmychangga · Nov 11, 2023 at 3:13 PM"> <article class="message-body js-selectToQuote"> <div > <div class="bbWrapper">Is there anything wrong with this circuit? because it does not work in my breadboard i also tried it on proto but i seems like it is also not working. please help i really need it for my school <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite3" alt=":(" title="Frown :(" loading="lazy" data-shortname=":(" /><br /> <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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1444165" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1444165" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1444165">Tony Stewart said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> JK=1 to toggle pin 3&14 to v+ not gnd= Pin 11 = Gnd ,, schematic errors. </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote><br /> Should i also remove the resistor 1 and 2 and make it 1k?</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" 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"> <li class="u-concealed"> <a href="/threads/please-help-i-need-this-circuit-to-work.165504/post-1444168" rel="nofollow" itemprop="url"> <time class="u-dt" dir="auto" datetime="2023-11-11T17:48:24-0800" data-time="1699753704" data-date-string="Nov 11, 2023" data-time-string="5:48 PM" title="Nov 11, 2023 at 5:48 PM" itemprop="datePublished">Nov 11, 2023</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/please-help-i-need-this-circuit-to-work.165504/post-1444168" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1444168/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/please-help-i-need-this-circuit-to-work.165504/post-1444168" rel="nofollow"> #4 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1444168" data-lb-caption-desc="Tony Stewart · Nov 11, 2023 at 5:48 PM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper">That is not a good design to copy for many reasons. TTL on 6V, etc<br /> <br /> I think you want to which may be a 20 Hz toggle LED flasher. <br /> <br /> make the change I said for pulling J=K=hi.</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> <div class="message-lastEdit"> Last edited: <time class="u-dt" dir="auto" datetime="2023-11-11T18:04:18-0800" data-time="1699754658" data-date-string="Nov 11, 2023" data-time-string="6:04 PM" title="Nov 11, 2023 at 6:04 PM" itemprop="dateModified">Nov 11, 2023</time> </div> <aside class="message-signature"> <div class="bbWrapper">In theory, it makes no difference, in practice it does, but depends on your experience.<br /> EE since 1975.</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 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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/please-help-i-need-this-circuit-to-work.165504/post-1444169" rel="nofollow" itemprop="url"> <time class="u-dt" dir="auto" datetime="2023-11-11T17:49:20-0800" data-time="1699753760" data-date-string="Nov 11, 2023" data-time-string="5:49 PM" title="Nov 11, 2023 at 5:49 PM" itemprop="datePublished">Nov 11, 2023</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/please-help-i-need-this-circuit-to-work.165504/post-1444169" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1444169/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/please-help-i-need-this-circuit-to-work.165504/post-1444169" rel="nofollow"> #5 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1444169" data-lb-caption-desc="Tony Stewart · Nov 11, 2023 at 5:49 PM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper"><div> <a href="https://www.electroschematics.com/1-hz-pulse-generator/" class="link link--external" target="_blank" rel="nofollow ugc noopener" data-proxy-href=""> https://www.electroschematics.com/1-hz-pulse-generator/ </a> </div> reduce the Cap C1 to 1uF for 10 Hz or 0.47uf for 20 Hz</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> <aside class="message-signature"> <div class="bbWrapper">In theory, it makes no difference, in practice it does, but depends on your experience.<br /> EE since 1975.</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-1444169"> <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="Tony Stewart" data-content="post-1444170" id="js-post-1444170" itemscope itemtype="https://schema.org/Answer" itemid="https://www.electro-tech-online.com/posts/1444170/"> <meta itemprop="parentItem" itemscope itemid="https://www.electro-tech-online.com/threads/please-help-i-need-this-circuit-to-work.165504/" /> <span class="u-anchorTarget" id="post-1444170"></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/tony-stewart.214701/"> <meta 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class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1444170/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/please-help-i-need-this-circuit-to-work.165504/post-1444170" rel="nofollow"> #6 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1444170" data-lb-caption-desc="Tony Stewart · Nov 11, 2023 at 6:11 PM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper">Try something like this on 5V<br /> <br /> <div> <a href="https://tinyurl.com/ys7mghat" class="link link--external" target="_blank" rel="nofollow ugc noopener" data-proxy-href=""> https://tinyurl.com/ys7mghat </a> </div></div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> <aside class="message-signature"> <div class="bbWrapper">In theory, it makes no difference, in practice it does, but depends on your experience.<br /> EE since 1975.</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-1444170"> <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 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data-lb-caption-desc="timmychangga · Nov 11, 2023 at 6:11 PM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper">thank you so much!</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-1444171"> <meta itemprop="upvoteCount" content="0" /> <a href="javascript:" class="contentVote-vote is-disabled 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href="/threads/please-help-i-need-this-circuit-to-work.165504/post-1444172" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1444172/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/please-help-i-need-this-circuit-to-work.165504/post-1444172" rel="nofollow"> #8 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1444172" data-lb-caption-desc="Tony Stewart · Nov 11, 2023 at 6:15 PM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper">The switch is interactive and the plot may be slower than the actual speed which you can adjust slider to 66% for approx real-time<br /> <br /> If using CMOS 74HC73, then you are advised to connect floating inputs with 10k to 100k to gnd. Whereas for TTL floating inputs are approx 1.3V and recognized as a logic "1"<br /> <br /> You can also open the switch and edit> momentary.<br /> <br /> then use the mouse wheel to change any R or C to see the change in results. and Ctrl+z to undo.<br /> <br /> or slowdown the chart recorder plot. with the mousewheel.<br /> <br /> There are lots of other 555 designs and standard electronic designs and funky ones like > Circuits>Op Amps> Oscillators> Jerk<br /> <br /> <div> <a href="https://tinyurl.com/yujttt6j" class="link link--external" target="_blank" rel="nofollow ugc noopener" data-proxy-href=""> https://tinyurl.com/yujttt6j </a> </div></div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> <div class="message-lastEdit"> Last edited: <time class="u-dt" dir="auto" datetime="2023-11-11T18:29:29-0800" data-time="1699756169" data-date-string="Nov 11, 2023" data-time-string="6:29 PM" title="Nov 11, 2023 at 6:29 PM" itemprop="dateModified">Nov 11, 2023</time> </div> <aside class="message-signature"> <div class="bbWrapper">In theory, it makes no difference, in practice it does, but depends on your experience.<br /> EE since 1975.</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 is-active"> <ul class="reactionSummary"> <li><span class="reaction reaction--small reaction--2" data-reaction-id="2"><i aria-hidden="true"></i><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="reaction-sprite js-reaction" alt="Love" title="Love" /></span></li> </ul> <span class="u-srOnly">Reactions:</span> <a class="reactionsBar-link" href="/posts/1444172/reactions" data-xf-click="overlay" data-cache="false" rel="nofollow"><bdi>timmychangga</bdi></a> </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-1444172"> <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="Tony Stewart" data-content="post-1444174" id="js-post-1444174" itemscope itemtype="https://schema.org/Answer" 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href="/threads/please-help-i-need-this-circuit-to-work.165504/post-1444174" rel="nofollow" itemprop="url"> <time class="u-dt" dir="auto" datetime="2023-11-11T18:32:42-0800" data-time="1699756362" data-date-string="Nov 11, 2023" data-time-string="6:32 PM" title="Nov 11, 2023 at 6:32 PM" itemprop="datePublished">Nov 11, 2023</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/please-help-i-need-this-circuit-to-work.165504/post-1444174" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1444174/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/please-help-i-need-this-circuit-to-work.165504/post-1444174" rel="nofollow"> #9 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1444174" data-lb-caption-desc="Tony Stewart · Nov 11, 2023 at 6:32 PM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper">or look at a light bulb take 10x rated power in slow motion (10%) as the filament heats up and rises in resistance then look at filament temperature.<br /> <br /> <div> <a href="https://tinyurl.com/yveptphk" class="link link--external" target="_blank" rel="nofollow ugc noopener" data-proxy-href=""> https://tinyurl.com/yveptphk </a> </div> <br /> Notice where on the plot is says 200W peak and 100W average after it heats up<br /> <br /> If you can imagine it. <br /> You can simulate it. (after you learn how)</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> <aside class="message-signature"> <div class="bbWrapper">In theory, it makes no difference, in practice it does, but depends on your experience.<br /> EE since 1975.</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-1444174"> <meta itemprop="upvoteCount" content="0" /> <a href="javascript:" 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</header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1444175" data-lb-caption-desc="timmychangga · Nov 11, 2023 at 6:33 PM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper">do u have any flipflop circuits? my professor said that we need 3 flipflops in one circuit, but i dont know how to do it since it was not been lectures to us</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> 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itemprop="url"> <time class="u-dt" dir="auto" datetime="2023-11-11T18:37:34-0800" data-time="1699756654" data-date-string="Nov 11, 2023" data-time-string="6:37 PM" title="Nov 11, 2023 at 6:37 PM" itemprop="datePublished">Nov 11, 2023</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/please-help-i-need-this-circuit-to-work.165504/post-1444177" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1444177/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/please-help-i-need-this-circuit-to-work.165504/post-1444177" rel="nofollow"> #11 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1444177" data-lb-caption-desc="Tony Stewart · Nov 11, 2023 at 6:37 PM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper">Falstad has all that .<br /> use D or JK FF for registers , counters dividers.<br /> <br /> >Circuits> Sequential Logic> counters> pick 1st or any, figure out how it works.</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> <aside class="message-signature"> <div class="bbWrapper">In theory, it makes no difference, in practice it does, but depends on your experience.<br /> EE since 1975.</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 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rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/please-help-i-need-this-circuit-to-work.165504/post-1444178" rel="nofollow"> #12 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1444178" data-lb-caption-desc="timmychangga · Nov 11, 2023 at 6:39 PM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper">thank you so much for helping</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 is-active"> <ul class="reactionSummary"> <li><span 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<div class="message-avatar message-avatar--online"> <div class="message-avatar-wrapper"> <a href="/members/tony-stewart.214701/" class="avatar avatar--m" data-user-id="214701" data-xf-init="member-tooltip"> <img src="/data/avatars/m/214/214701.jpg?1680361778" srcset="/data/avatars/l/214/214701.jpg?1680361778 2x" alt="Tony Stewart" class="avatar-u214701-m" width="96" height="96" loading="lazy" itemprop="image" /> </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/tony-stewart.214701/" class="username " dir="auto" data-user-id="214701" data-xf-init="member-tooltip"><span itemprop="name">Tony Stewart</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/please-help-i-need-this-circuit-to-work.165504/post-1444306" rel="nofollow" itemprop="url"> <time class="u-dt" dir="auto" datetime="2023-11-16T10:26:59-0800" data-time="1700159219" data-date-string="Nov 16, 2023" data-time-string="10:26 AM" title="Nov 16, 2023 at 10:26 AM" itemprop="datePublished">Nov 16, 2023</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/please-help-i-need-this-circuit-to-work.165504/post-1444306" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1444306/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/please-help-i-need-this-circuit-to-work.165504/post-1444306" rel="nofollow"> #13 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1444306" data-lb-caption-desc="Tony Stewart · Nov 16, 2023 at 10:26 AM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper">The schematic from Engineer's Garage has backwards LEDs and logic errors as if it was intentionally made wrong.</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> <aside class="message-signature"> <div class="bbWrapper">In theory, it makes no difference, in practice it does, but depends on your experience.<br /> EE since 1975.</div> </aside> </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="shokjok" data-content="post-1444823" id="js-post-1444823" itemscope itemtype="https://schema.org/Answer" itemid="https://www.electro-tech-online.com/posts/1444823/"> <meta itemprop="parentItem" itemscope itemid="https://www.electro-tech-online.com/threads/please-help-i-need-this-circuit-to-work.165504/" /> <span class="u-anchorTarget" id="post-1444823"></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/shokjok.90289/"> <meta itemprop="url" content="https://www.electro-tech-online.com/members/shokjok.90289/" /> <div class="message-avatar "> <div class="message-avatar-wrapper"> <a href="/members/shokjok.90289/" class="avatar avatar--m avatar--default avatar--default--dynamic" data-user-id="90289" 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data-time-string="11:01 AM" title="Nov 27, 2023 at 11:01 AM" itemprop="datePublished">Nov 27, 2023</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/please-help-i-need-this-circuit-to-work.165504/post-1444823" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1444823/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/please-help-i-need-this-circuit-to-work.165504/post-1444823" rel="nofollow"> #14 </a> </li> </ul> </header> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1444823" data-lb-caption-desc="shokjok · Nov 27, 2023 at 11:01 AM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper"><blockquote data-attributes="member: 214701" data-quote="Tony Stewart" data-source="post: 1444168" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1444168" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1444168">Tony Stewart said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> That is not a good design to copy for many reasons. TTL on 6V, etc<br /> <br /> I think you want to which may be a 20 Hz toggle LED flasher.<br /> <br /> make the change I said for pulling J=K=hi. </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>It could work with a 74C73 or 74HC73 CMOS JK flip-flop IC.</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 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/1444823/reactions" data-xf-click="overlay" data-cache="false" rel="nofollow"><bdi>timmychangga</bdi></a> </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-1444823"> <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> </div> </div> <div class="block-outer block-outer--after"> <dl class="blockStatus"> <dt>Status</dt> <dd class="blockStatus-message blockStatus-message--locked"> Not open for further replies. </dd> </dl> </div> </div> <div class="inContentAd"><div id='div-gpt-eto_thread1'> <script> googletag.cmd.push(function() { googletag.display('div-gpt-eto_thread1'); 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TTL on 6V, etc\n\n I think you want to which may be a 20 Hz toggle LED flasher.\n\n make the change I said for pulling J=K=hi.\n\nIt could work with a 74C73 or 74HC73 CMOS JK flip-flop IC.", "upvoteCount": 0, "author": { "@type": "Person", "@id": "https://www.electro-tech-online.com/members/shokjok.90289/", "name": "shokjok", "url": "https://www.electro-tech-online.com/members/shokjok.90289/" } }, { "@type": "Answer", "datePublished": "2023-11-16T18:26:59+00:00", "url": "https://www.electro-tech-online.com/posts/1444306/", "text": "The schematic from Engineer's Garage has backwards LEDs and logic errors as if it was intentionally made wrong.", "upvoteCount": 0, "author": { "@type": "Person", "@id": "https://www.electro-tech-online.com/members/tony-stewart.214701/", "name": "Tony Stewart", "url": "https://www.electro-tech-online.com/members/tony-stewart.214701/" } }, { "@type": "Answer", "datePublished": "2023-11-12T02:39:58+00:00", "url": "https://www.electro-tech-online.com/posts/1444178/", "text": "thank you so much for helping", "upvoteCount": 0, "author": { "@type": "Person", "@id": "https://www.electro-tech-online.com/members/timmychangga.323239/", "name": "timmychangga", "url": "https://www.electro-tech-online.com/members/timmychangga.323239/" } } ] }, "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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