<html xmlns="http://www.w3.org/1999/xhtml" xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office"><head><!--[if gte mso 9]><xml><o:OfficeDocumentSettings><o:AllowPNG/><o:PixelsPerInch>96</o:PixelsPerInch></o:OfficeDocumentSettings></xml><![endif]--></head><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:16px"><div id="yui_3_16_0_1_1527120823372_3083"><span></span></div><div id="yui_3_16_0_1_1527120823372_3083" dir="ltr"><span id="yui_3_16_0_1_1527120823372_3103">I have finalized the PCB layout for the SCM. Although not really necessary, layering various "breakout boards" onto PCB foundations that use electrical traces to connect various parts will definitely cut down on the mish-mash of wiring that would otherwise be required. I have settled on a configuration providing 16 each of analog, serial, and I2C sensors. This is way more than I ever anticipate needing however it does offer plenty of room for expansion and doesn't cost much more than limiting to 4 or 8 sensors...so why not go for it.</span></div><div id="yui_3_16_0_1_1527120823372_3083" dir="ltr"><span><br></span></div><div id="yui_3_16_0_1_1527120823372_3083" dir="ltr"><span id="yui_3_16_0_1_1527120823372_3557">I am using ExpressPCB for the PCB design work. In my prototype I was using an Arduino for sensor data collection and a Raspberry PI for graphic display however I am now thinking about using a second Raspberry PI for data collection to take advantage of the huge difference in processing power available with it compared to the Arduino.</span></div><div id="yui_3_16_0_1_1527120823372_3083" dir="ltr"><span><br></span></div><div id="yui_3_16_0_1_1527120823372_3083" dir="ltr"><span id="yui_3_16_0_1_1527120823372_3828">The three PCB boards and microprocessor will be housed together in a "sensor collection box" (hmmm, another acronym opportunity - SCB) and communicate with the graphics microprocessor via USB.</span></div><div id="yui_3_16_0_1_1527120823372_3083" dir="ltr"><span><br></span></div><div id="yui_3_16_0_1_1527120823372_3083" dir="ltr"><span id="yui_3_16_0_1_1527120823372_3697">The layout boards can be viewed here</span></div><div id="yui_3_16_0_1_1527120823372_3083" dir="ltr"><a href="http://www.subdb.info/database/vessels/1320788990/docs/scm_-_pcb_layout.pdf" style="background-color: rgb(255, 255, 255);" id="yui_3_16_0_1_1527120823372_3533">http://www.subdb.info/database/vessels/1320788990/docs/scm_-_pcb_layout.pdf</a><span><br></span></div><div id="yui_3_16_0_1_1527120823372_3083" dir="ltr"><br></div><div id="yui_3_16_0_1_1527120823372_3083" dir="ltr">Click here to see the <a href="https://www.youtube.com/watch?time_continue=1&v=8JkGYM6V2a4" class="enhancr2_c3916345-6fd9-802b-e01f-977d73aa7956" id="yui_3_16_0_1_1527120823372_3141" style="background-color: rgb(255, 255, 255);">Submarine Control Manager (SCM)</a> graphical display.</div><div id="yui_3_16_0_1_1527120823372_3477"><br></div><div id="enhancr2_c3916345-6fd9-802b-e01f-977d73aa7956" class="yahoo-link-enhancr-card ymail-preserve-class ymail-preserve-style" style="max-width:400px;font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;" contenteditable="false" data-url="https://www.youtube.com/watch?time_continue=1&v=8JkGYM6V2a4" data-type="yenhancr" data-category="video.other" data-embed-url="" data-size="medium" dir="ltr"> <a href="https://www.youtube.com/watch?time_continue=1&v=8JkGYM6V2a4" style="text-decoration:none !important; color: #000 !important;" class="yahoo-enhancr-cardlink" target="_blank" rel="noreferrer" id="yui_3_16_0_1_1527120823372_3509"> <table class="card-wrapper yahoo-ignore-table" cellpadding="0" cellspacing="0" border="0" style="max-width:400px;" id="yui_3_16_0_1_1527120823372_3508"> <tbody id="yui_3_16_0_1_1527120823372_3507"><tr id="yui_3_16_0_1_1527120823372_3506"> <td width="400" id="yui_3_16_0_1_1527120823372_3505"> <table class="card yahoo-ignore-table" cellpadding="0" cellspacing="0" border="0" width="100%" style="max-width:400px;" id="yui_3_16_0_1_1527120823372_3504"> <tbody id="yui_3_16_0_1_1527120823372_3503"><tr id="yui_3_16_0_1_1527120823372_3674"> <td class="card-primary-image-cell" style="background:#000 url('https://s.yimg.com/vv//api/res/1.2/PMUBkgNNayyfEvq_V5p4yw--~A/YXBwaWQ9bWFpbDtmaT1maWxsO2g9MjAwO3c9NDAw/https://i.ytimg.com/vi/8JkGYM6V2a4/hqdefault.jpg.cf.jpg') no-repeat center center;background-size:cover;height:200px;position:relative;" background="https://s.yimg.com/vv//api/res/1.2/PMUBkgNNayyfEvq_V5p4yw--~A/YXBwaWQ9bWFpbDtmaT1maWxsO2g9MjAwO3c9NDAw/https://i.ytimg.com/vi/8JkGYM6V2a4/hqdefault.jpg.cf.jpg" bgcolor="#000000" valign="top" id="yui_3_16_0_1_1527120823372_3673"> <!--[if gte mso 9]><v:rect fill="true" stroke="false" style="width:400px;height:218px;position:absolute;top:0;left:0;"><v:fill type="frame" color="#000000" src="https://s.yimg.com/vv//api/res/1.2/PMUBkgNNayyfEvq_V5p4yw--~A/YXBwaWQ9bWFpbDtmaT1maWxsO2g9MjAwO3c9NDAw/https://i.ytimg.com/vi/8JkGYM6V2a4/hqdefault.jpg.cf.jpg"/></v:rect><![endif]--> <table class="yahoo-ignore-table" cellpadding="0" cellspacing="0" border="0" valign="top" style="width:100%;" id="yui_3_16_0_1_1527120823372_3672"> <tbody id="yui_3_16_0_1_1527120823372_3671"><tr id="yui_3_16_0_1_1527120823372_3670"> <td style="background:transparent url('https://s.yimg.com/nq/storm/assets/enhancrV2/12/overlay-tile.png') repeat left top;height:200px;" background="https://s.yimg.com/nq/storm/assets/enhancrV2/12/overlay-tile.png" bgcolor="transparent" valign="top" id="yui_3_16_0_1_1527120823372_3669"> <!--[if gte mso 9]><v:rect fill="true" stroke="false" style="width:400px;height:218px;position:absolute;top:-18px;left:0;"><v:fill type="pattern" color="#000000" src="https://s.yimg.com/nq/storm/assets/enhancrV2/12/overlay-tile.png"/><v:textbox inset="0,0,20px,0"><![endif]--> <table class="yahoo-ignore-table" height="185" style="width:100%;height:185px;min-height:185px;" id="yui_3_16_0_1_1527120823372_3668"> <tbody id="yui_3_16_0_1_1527120823372_3667"><tr id="yui_3_16_0_1_1527120823372_3666"> <td class="card-richInfo2" style="text-align:left;text-align:left;padding:15px 0 0 15px;vertical-align:top;" id="yui_3_16_0_1_1527120823372_3665"> </td> <td class="card-actions" style="text-align:right;padding:15px 15px 0 0;vertical-align:top;"> <div class="card-share-container"></div> </td> </tr> </tbody></table> <!--[if gte mso 9]></v:textbox></v:rect><![endif]--> </td> </tr> </tbody></table> </td> </tr> <tr id="yui_3_16_0_1_1527120823372_3502"> <td id="yui_3_16_0_1_1527120823372_3501"> <table class="card-info yahoo-ignore-table" align="center" cellpadding="0" cellspacing="0" border="0" style="background:#fff;position:relative;z-index:2;width:95%;max-width:380px;border:1px solid #e0e4e9;border-bottom:3px solid #e52d27;margin-top:-40px;margin-left:auto;margin-right:auto;" id="yui_3_16_0_1_1527120823372_3500"> <tbody id="yui_3_16_0_1_1527120823372_3499"><tr id="yui_3_16_0_1_1527120823372_3498"> <td style="background-color:#ffffff;padding:16px 0 16px 12px;vertical-align:top;"> <img class="card-object-1 yahoo-ignore-inline-image ymail-preserve-class" src="https://s.yimg.com/nq/storm/assets/enhancrV2/23/logos/youtube.png" height="32" style="min-width:32px;border:1px solid #e0e4e9;margin-top:3px;" data-id="7f53c89e-7b4e-c88c-94d6-d780d0bf9ad6"> </td> <td style="vertical-align:middle;padding:16px 12px;width:99%;" id="yui_3_16_0_1_1527120823372_3497"> <h2 class="card-title" style="font-size: 16px; line-height:19px; margin:0 0 4px 0;font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;word-break:break-word;">Submarine Control Manager (SCM)</h2> <div class="card-description" style="font-size:11px;line-height:15px;color:#999;word-break:break-word;">A demo of the latest SCM software I have developed. It provides a graphical display of sensors and allows contro...</div> </td> <td style="text-align:right;padding:16px 12px 16px 0;"> </td> </tr> </tbody></table> </td> </tr> </tbody></table> </td> </tr> </tbody></table> </a></div><div id="yui_3_16_0_1_1527120823372_3485"><br></div><div class="qtdSeparateBR" id="yui_3_16_0_1_1527120823372_3056"><br><br></div></div></body></html>