33 lines
11 KiB
HTML
33 lines
11 KiB
HTML
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<a class=mdl-navigation__link href=/components/ title=Components tabindex=0>Components</a></nav></div><main aria-role=main><div class=subpage-content><div class=chocolate-container><div class=mdl-grid><div class="mdl-cell mdl-cell--12-col mdl-cell--12-col-tablet mdl-cell--12-col-phone"><div class=chocolate-blog-single><div><div class=mdl-grid><div class="mdl-cell mdl-cell--4-col mdl-cell--12-col-tablet mdl-cell--12-col-phone left"><img class=responsive-img src=/images/PCBBasic2_1.webp alt="Featured image for article: The electronics board PCBBasic2.0"></div><div class="mdl-cell mdl-cell--8-col mdl-cell--12-col-tablet mdl-cell--12-col-phone right"><h1>The electronics board PCBBasic2.0</h1><span class=post-info><span>Anthony Hathaway</span>
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<span class="d-none d-sm-block col-sm-2 mt-auto offset-sm-2 text-right"><time class=post-date datetime=2017-03-09T00:00:00Z>Mar 9, 2017</time></span></span><div><p>For the last couple of months we have gotten back to circuit boards and looking at completing the project we started a long time ago. Making the shower smart and easily controllable like one would expect from modern consumer products. There's been a lot to learn considering all we could do a few years ago was wire up a light bulb, and even then we would need to check what the difference was with the brown wire (live/positive) and the blue wire (ground/neutral).</p><p>To keep it simple last year we started working on a fully analog version of the system, just like the one below.</p><img class=responsive-img src=/images/PCBBasic2_1.webp alt="Initial analog control panel with rocker switches and toggle switches mounted on a black panel"><p>Basically it's a switch panel and buttons where the top 3 water proof/resistant rocker switches are to activate the pump, uv and heater and a 6 toggle switch switch-board below to control the individual valves. The top 3 buttons go to the power box that activated the relays with a 1 V DC current to close the circuit for the 220V AC to power the aforementioned devices. The valves are controlled directly via the 12V DC power supply.</p><img class=responsive-img src=/images/PCBBasic2_2.webp alt="Close-up view of the switch panel showing the waterproof rocker switches and toggle switches with labels">
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<img class=responsive-img src=/images/PCBBasic2_3.webp alt="Interior wiring of the control panel showing connections between switches and control circuits"><p>Anyway, that was the old one. Since then we've added all kindsa stuff. An integrated GFCI, fuses, an 8-channel relay module, voltage meter for the pump and a motor controller, Power button and the appropriate cable glands to keep everything up to spec. The cables should be around 18 AWG or lower (thicker).</p><p>Additionally to make it easier to use in everyday use we made an analog controller. This should be done with an integrated circuit but I don't have experience with that and the last two people I've tried to work with have failed to help me so I'm starting from the most basic setup that I can understand and make myself. So below you can see the schematic connecting one switch to multiple devices using diodes to keep the flow in one direction.</p><img class=responsive-img src=/images/PCBBasic2_4.webp alt="Electrical schematic diagram showing switch connections with diodes to control multiple devices">
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<img class=responsive-img src=/images/PCBBasic2_5.webp alt="Breadboard prototype of the control circuit with diodes and wiring for testing">
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<img class=responsive-img src=/images/PCBBasic2_6.webp alt="Close-up of soldered diode connections on the prototype circuit board">
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<img class=responsive-img src=/images/PCBBasic2_7.webp alt="Assembled circuit board showing the completed control system with all components">
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<img class=responsive-img src=/images/PCBBasic2_8.webp alt="Testing the control board with multimeter to verify electrical connections">
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<img class=responsive-img src=/images/PCBBasic2_9.webp alt="Final control board mounted in enclosure with cable connections">
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<link href=/css/vendor/video-js.min.css rel=stylesheet><script src=/js/videojs/video.min.js></script><div class=responsive-video-container><video id=video3 class="video-js vjs-default-skin vjs-big-play-centered" controls preload=auto width=640 height=360 poster=/videos/hls/video3/poster.webp data-setup='{"fluid": true}'>
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<source src=/videos/hls/video3/index.m3u8 type=video/mp4><p class=vjs-no-js>To view this video please enable JavaScript, and consider upgrading to a
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<img class=responsive-img src=/images/PCBBasic2_11.webp alt="Complete ShowerLoop control system with the new electronics board fully wired and functional"></div><span>Tags:</span>
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