<div dir="ltr">Hi Benjamin,<div>Here are docs about the 930 and 931. Sadly nothing on the 936. </div><div>I assume though the matrix scanning was probably done in a similar way, so might be of some help<br><br><a href="https://app.box.com/folder/31685718924?s=qux1xx8ct2dmr53koo9zig651spy7ef1">https://app.box.com/folder/31685718924?s=qux1xx8ct2dmr53koo9zig651spy7ef1</a><br></div><div><br></div><div>I was going to do a similar thing, and asked about on the stack overflow, there were some suggestions on how to do it from Arduino:</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Jul 10, 2023 at 10:01 AM Benjamin Tremblay via Synth-diy <<a href="mailto:synth-diy@synth-diy.org">synth-diy@synth-diy.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">Several Asian warehouses claim to have uPD936CT mcus, but nobody knew how it work. All I care is being able to scan the matrix with some kind of Arduino. I’ll get it done.<br><br><div dir="ltr">Benjamin Tremblay</div><div dir="ltr"><br><blockquote type="cite">On Jul 9, 2023, at 7:41 PM, Peter Pearson via Synth-diy <<a href="mailto:synth-diy@synth-diy.org" target="_blank">synth-diy@synth-diy.org</a>> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><div dir="ltr">I think that would've been a slider ruler with a lighter attached but yeah, strong agreement here.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Jul 9, 2023 at 7:31 PM Adam (synthDIY) <<a href="mailto:synthdiy@adambaby.com" target="_blank">synthdiy@adambaby.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div>Wow!<div>NASA could have really used these back in 1969...</div><div><br></div><div><div><GPN-2000-001313.jpeg></div><br><div><br><blockquote type="cite"><div>On 10 Jul 2023, at 9:13 am, Peter Pearson <<a href="mailto:electrocontinuo@gmail.com" target="_blank">electrocontinuo@gmail.com</a>> wrote:</div><br><div><div dir="ltr">On the Casio end of things, does anyone have a schematic for the Casio QL-10 Calculighter?<div><br></div><div><a href="https://www.calculator.org/calculators/Casio_QL-10.html" target="_blank">https://www.calculator.org/calculators/Casio_QL-10.html</a><br></div><div><br></div><div>Saw something about it in a recent "Bad Gear" (no such thing) youtube video.  I want one...</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Jul 9, 2023 at 6:50 PM Adam (synthDIY) <<a href="mailto:synthdiy@adambaby.com" target="_blank">synthdiy@adambaby.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div>Robin Whittle did a lot of investigating in the 1980s with a related chip found in Casios. Some of this may be of help.<div><br></div><div><div style="display:block"><div style="display:inline-block" role="link"><a style="border-radius:10px;font-family:-apple-system,Helvetica,Arial,sans-serif;display:block;width:228px;overflow:hidden;text-decoration:none" rel="nofollow" href="https://www.firstpr.com.au/rwi/casio/Casio-931-2006-06-17.txt" dir="ltr" role="button" width="228" target="_blank"><table style="table-layout:fixed;border-collapse:collapse;width:228px;background-color:rgb(229,230,233);font-family:-apple-system,Helvetica,Arial,sans-serif" cellpadding="0" cellspacing="0" border="0" width="228"><tbody><tr><td align="center"><span id="m_-4514269672798014341m_-1806982447355216464cid:1893cecbc79b2f85b031"><preview.png></span></td></tr><tr><td><table bgcolor="#E5E6E9" cellpadding="0" cellspacing="0" width="228" style="font-family:-apple-system,Helvetica,Arial,sans-serif;table-layout:fixed;background-color:rgb(229,230,233)"><tbody><tr><td style="padding:8px 0px"><div style="max-width:100%;margin:0px 16px;overflow:hidden"><div style="font-weight:500;font-size:12px;overflow:hidden;text-overflow:ellipsis;text-align:left"><a rel="nofollow" href="https://www.firstpr.com.au/rwi/casio/Casio-931-2006-06-17.txt" style="text-decoration:none" target="_blank"><font color="#272727">Casio-931-2006-06-17</font></a></div><div style="font-weight:400;font-size:11px;overflow:hidden;text-overflow:ellipsis;text-align:left"><a rel="nofollow" href="https://www.firstpr.com.au/rwi/casio/Casio-931-2006-06-17.txt" style="text-decoration:none" target="_blank"><font color="#808080">Text Document · 90 KB</font></a></div></div></td></tr></tbody></table></td></tr></tbody></table></a></div></div><div style="display:block"><br></div><div style="display:block"><br></div><div style="display:block">and some background here</div><div style="display:block"><div style="display:block"><div style="display:inline-block" role="link"><a style="border-radius:10px;font-family:-apple-system,Helvetica,Arial,sans-serif;display:block;width:300px;overflow:hidden;text-decoration:none" rel="nofollow" href="https://www.firstpr.com.au/rwi/casio/" dir="ltr" role="button" width="300" target="_blank"><table style="table-layout:fixed;border-collapse:collapse;width:300px;background-color:rgb(229,230,233);font-family:-apple-system,Helvetica,Arial,sans-serif" cellpadding="0" cellspacing="0" border="0" width="300"><tbody><tr><td><table bgcolor="#E5E6E9" cellpadding="0" cellspacing="0" width="300" style="font-family:-apple-system,Helvetica,Arial,sans-serif;table-layout:fixed;background-color:rgb(229,230,233)"><tbody><tr><td style="padding:8px 0px"><div style="max-width:100%;margin:0px 16px;overflow:hidden"><div style="font-weight:500;font-size:12px;overflow:hidden;text-overflow:ellipsis;text-align:left"><a rel="nofollow" href="https://www.firstpr.com.au/rwi/casio/" style="text-decoration:none" target="_blank"><font color="#272727">Modifications to Casio musical instruments from the 1980s</font></a></div><div style="font-weight:400;font-size:11px;overflow:hidden;text-overflow:ellipsis;text-align:left"><a rel="nofollow" href="https://www.firstpr.com.au/rwi/casio/" style="text-decoration:none" target="_blank"><font color="#808080">firstpr.com.au</font></a></div></div></td><td style="padding:0px 12px 0px 0px" width="36"><a rel="nofollow" href="https://www.firstpr.com.au/rwi/casio/" target="_blank"><img style="display: inline-block; width: 36px; height: 36px;" width="36" height="36"></a></td></tr></tbody></table></td></tr></tbody></table></a></div></div><br></div><div><br></div><div><br></div>A</div><div><br></div><div><br></div><div><br></div><div><br><div><br><blockquote type="cite"><div>On 10 Jul 2023, at 4:51 am, Benjamin Tremblay via Synth-diy <<a href="mailto:synth-diy@synth-diy.org" target="_blank">synth-diy@synth-diy.org</a>> wrote:</div><br><div><div>I cannot find any pinouts for this chip. <br>I pulled if off the board (very carefully for me). Now I am trying to guess which io pins scanned the keys and switches. <br>I can’t find a pinout for this chip anywhere. Octopart denies its existence. <br>Not the same chip as the Casio VL and PT series monophonic keyboards, but hopefully somebody got a bonus for cramming the VL-10 functionality into this 28 pin DIP.<br><br>Ben<br>_______________________________________________<br>Synth-diy mailing list<br><a href="mailto:Synth-diy@synth-diy.org" target="_blank">Synth-diy@synth-diy.org</a><br><a href="http://synth-diy.org/mailman/listinfo/synth-diy" target="_blank">http://synth-diy.org/mailman/listinfo/synth-diy</a><br>Selling or trading? Use <a href="mailto:marketplace@synth-diy.org" target="_blank">marketplace@synth-diy.org</a><br></div></div></blockquote></div><br></div></div>_______________________________________________<br>
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