<p dir="ltr">How do these feel? Like previous generation elektron encoders? Could we easily mux 6 pots into one ADC? I've never done it. I have a teensy 3.6 based prototype to send out dmx where I currently have 6 encoders. But I'd love to upgrade this to elektron like encoders/endless pots.. :) this is exactly why a while ago I asked about it. Others were interested as well.</p>
<br><div class="gmail_quote"><div dir="ltr">On Mon, Jul 10, 2017, 13:47 Liam D <<a href="mailto:helloliamdaly@gmail.com">helloliamdaly@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word">Thanks! I remember coming across this style of pot a while back when tinkering with an alesis ion. That synth used about 30 of these plus a few regular pots all muxed down to 8 ADC channels. The service manual is on the web if anyones interested in the schematic. I always thought these would be cool parts to design with but I could never find a supplier for them.<div><br></div><div>cheers,</div><div><br></div><div>Liam</div></div><div style="word-wrap:break-word"><div><br><div><blockquote type="cite"><div>On Jul 10, 2017, at 9:50 AM, Rick Jansen <<a href="mailto:rick.jansen@xs4all.nl" target="_blank">rick.jansen@xs4all.nl</a>> wrote:</div><br class="m_-7509148493419736497Apple-interchange-newline"><div><div style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"></div><div style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px">Very useful! Thanks for this, I had never seen it before.</div><div style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><br></div><div style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px">rick</div><div style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><br>On 10 Jul 2017, at 13:12, Ullrich Peter <<a href="mailto:Peter.Ullrich@kapsch.net" style="color:purple;text-decoration:underline" target="_blank">Peter.Ullrich@kapsch.net</a>> wrote:<br><br></div><blockquote type="cite" style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><div><div class="m_-7509148493419736497WordSection1"><div style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span lang="EN-US" style="font-size:11pt;font-family:Arial,sans-serif">Hi!<u></u><u></u></span></div><div style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span lang="EN-US" style="font-size:11pt;font-family:Arial,sans-serif"><u></u> <u></u></span></div><div style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span lang="EN-US" style="font-size:11pt;font-family:Arial,sans-serif">Maybe the Bourns ACE Encoder could fit here: absolute encoder, 128 states per revolution, no hard steps<u></u><u></u></span></div><div style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span lang="EN-US" style="font-size:11pt;font-family:Arial,sans-serif"><a href="https://www.bourns.com/pdfs/ace.pdf" style="color:purple;text-decoration:underline" target="_blank">https://www.bourns.com/pdfs/ace.pdf</a><u></u><u></u></span></div><div style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span lang="EN-US" style="font-size:11pt;font-family:Arial,sans-serif"><u></u> <u></u></span></div><div style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span lang="EN-US" style="font-size:11pt;font-family:Arial,sans-serif">about 5pounds<u></u><u></u></span></div><div style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span lang="EN-US" style="font-size:11pt;font-family:Arial,sans-serif"><a href="http://uk.farnell.com/bourns/eaw0j-b24-ae0128l/encoder-rotary-128pos-8-bit/dp/9358234" style="color:purple;text-decoration:underline" target="_blank">http://uk.farnell.com/bourns/eaw0j-b24-ae0128l/encoder-rotary-128pos-8-bit/dp/9358234</a><u></u><u></u></span></div><div style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span lang="EN-US" style="font-size:11pt;font-family:Arial,sans-serif"><u></u> <u></u></span></div><div style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span lang="EN-US" style="font-size:11pt;font-family:Arial,sans-serif">Youtube:<u></u><u></u></span></div><div style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span lang="EN-US" style="font-size:11pt;font-family:Arial,sans-serif"><a href="https://www.youtube.com/watch?v=MrPW8QGmlrM" style="color:purple;text-decoration:underline" target="_blank">https://www.youtube.com/watch?v=MrPW8QGmlrM</a><u></u><u></u></span></div><div style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span lang="EN-US" style="font-size:11pt;font-family:Arial,sans-serif"><u></u> <u></u></span></div><div style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span lang="EN-US" style="font-size:11pt;font-family:Arial,sans-serif"><a href="https://www.youtube.com/watch?v=44-XMo730wI" style="color:purple;text-decoration:underline" target="_blank">https://www.youtube.com/watch?v=44-XMo730wI</a><u></u><u></u></span></div><div style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span lang="EN-US" style="font-size:11pt;font-family:Arial,sans-serif"><u></u> <u></u></span></div><div style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></span></div><div style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif">Ciao<br>Peter<u></u><u></u></span></div><div style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></span></div><div style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif"><a href="http://www.ullrich.at.tt/" style="color:purple;text-decoration:underline" target="_blank">http://www.ullrich.at.tt</a> (My homepage)<u></u><u></u></span></div><div style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif"><a href="http://synpro.heimat.eu/datadial.htm" style="color:purple;text-decoration:underline" target="_blank">http://synpro.heimat.eu/datadial.htm</a> (Synth addon)<u></u><u></u></span></div><div style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif"><a href="http://rc100-usb.at.tt/" style="color:purple;text-decoration:underline" target="_blank">http://rc100-usb.at.tt/</a> (Roland sampler tool)<u></u><u></u></span></div><div style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span lang="EN-US" style="font-size:11pt;font-family:Arial,sans-serif"><u></u> <u></u></span></div><div style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span lang="EN-US" style="font-size:11pt;font-family:Arial,sans-serif"><u></u> <u></u></span></div><div style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span lang="EN-US" style="font-size:11pt;font-family:Arial,sans-serif"><u></u> <u></u></span></div><div><div style="border-style:solid none none;border-top-width:1pt;border-top-color:rgb(225,225,225);padding:3pt 0cm 0cm"><div style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><b><span lang="DE" style="font-size:11pt;font-family:Calibri,sans-serif">Von:</span></b><span lang="DE" style="font-size:11pt;font-family:Calibri,sans-serif"><span class="m_-7509148493419736497Apple-converted-space"> </span>Synth-diy [<a href="mailto:synth-diy-bounces@synth-diy.org" style="color:purple;text-decoration:underline" target="_blank">mailto:synth-diy-bounces@synth-diy.org</a>]<span class="m_-7509148493419736497Apple-converted-space"> </span><b>Im Auftrag von<span class="m_-7509148493419736497Apple-converted-space"> </span></b><a href="mailto:paula@synth.net" style="color:purple;text-decoration:underline" target="_blank">paula@synth.net</a><br><b>Gesendet:</b><span class="m_-7509148493419736497Apple-converted-space"> </span>Montag, 10. Juli 2017 12:51<br><b>An:</b><span class="m_-7509148493419736497Apple-converted-space"> </span>Julian Schmidt <<a href="mailto:elfenjunge@gmx.net" style="color:purple;text-decoration:underline" target="_blank">elfenjunge@gmx.net</a>><br><b>Cc:</b><span class="m_-7509148493419736497Apple-converted-space"> </span><a href="mailto:synth-diy@synth-diy.org" style="color:purple;text-decoration:underline" target="_blank">synth-diy@synth-diy.org</a><br><b>Betreff:</b><span class="m_-7509148493419736497Apple-converted-space"> </span>Re: [sdiy] sin/cos pot<u></u><u></u></span></div></div></div><div style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><u></u> <u></u></div><p><span style="font-size:10pt;font-family:Arial,sans-serif">Issues I see with a sin/cos pot;<u></u><u></u></span></p><p><span style="font-size:10pt;font-family:Arial,sans-serif">Use of 2 x ADC channels (more expensive than logic inputs)<u></u><u></u></span></p><p><span style="font-size:10pt;font-family:Arial,sans-serif">Slightly more complex software for reading/processing the sin/cos outputs.<u></u><u></u></span></p><p><span style="font-size:10pt;font-family:Arial,sans-serif">Advantge; you get an absolute position.<u></u><u></u></span></p><p><span style="font-size:10pt;font-family:Arial,sans-serif"><u></u> <u></u></span></p><p><span style="font-size:10pt;font-family:Arial,sans-serif">if you want more resolution from a regular grey code rotary encoder. you can use double edge triggering.<u></u><u></u></span></p><p><span style="font-size:10pt;font-family:Arial,sans-serif">So instead of just picking the rising edge on one channel, use both edges, this will give you 48PPQN with a 24PPQN encoder.<u></u><u></u></span></p><p><span style="font-size:10pt;font-family:Arial,sans-serif">I guess, though not tested, you could go a step further and use edge detection on both channels and both edges on both channels giving you 96PPQN from a 24PPQN encoder, though I would expect switch bounce to cause more of a problem at this resolution.<u></u><u></u></span></p><p><span style="font-size:10pt;font-family:Arial,sans-serif">Downside; no absolute position.<u></u><u></u></span></p><p><span style="font-size:10pt;font-family:Arial,sans-serif"><u></u> <u></u></span></p><p><span style="font-size:10pt;font-family:Arial,sans-serif">Paula<u></u><u></u></span></p><p><span style="font-size:10pt;font-family:Arial,sans-serif"><u></u> <u></u></span></p><p><span style="font-size:10pt;font-family:Arial,sans-serif"><u></u> <u></u></span></p><p><span style="font-size:10pt;font-family:Arial,sans-serif"><u></u> <u></u></span></p><p><span style="font-size:10pt;font-family:Arial,sans-serif"><u></u> <u></u></span></p><div><div style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span style="font-size:10pt;font-family:Arial,sans-serif"> <u></u><u></u></span></div></div><p><span style="font-size:10pt;font-family:Arial,sans-serif"><u></u> <u></u></span></p><p><span style="font-size:10pt;font-family:Arial,sans-serif">On 2017-07-10 11:31, Julian Schmidt wrote:<u></u><u></u></span></p><blockquote style="border-style:none none none solid;border-left-width:1.5pt;border-left-color:rgb(16,16,255);padding:0cm 0cm 0cm 5pt;margin-left:0cm;margin-right:0cm"><p class="MsoNormal" style="margin:0cm 0cm 12pt;font-size:12pt;font-family:'Times New Roman',serif"><span style="font-size:10pt;font-family:Arial,sans-serif">I also found them at<span class="m_-7509148493419736497Apple-converted-space"> </span><span style="color:rgb(31,73,125)"><a href="http://www.adimpex.it/" style="color:purple;text-decoration:underline" target="_blank">www.adimpex.it</a><span class="m_-7509148493419736497Apple-converted-space"> </span>for 1.15€/pcs. but they have a minimum order amount of 200€ :-/<br>still looking for a better sample source.</span><u></u><u></u></span></p><div><div style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span style="font-size:10pt;font-family:Arial,sans-serif">Am 10.07.2017 um 12:09 schrieb Michael Zacherl:<u></u><u></u></span></div></div><blockquote style="border-style:none none none solid;border-left-width:1.5pt;border-left-color:rgb(16,16,255);padding:0cm 0cm 0cm 5pt;margin-left:0cm;margin-right:0cm"><pre style="margin:0cm 0cm 0.0001pt;font-size:10pt;font-family:'Courier New'">On 9.Jul 2017, at 12:42 , Julian Schmidt <a href="mailto:elfenjunge@gmx.net" style="color:purple;text-decoration:underline" target="_blank"><elfenjunge@gmx.net></a> wrote:<u></u><u></u></pre><pre style="margin:0cm 0cm 0.0001pt;font-size:10pt;font-family:'Courier New'"><u></u> <u></u></pre><blockquote style="border-style:none none none solid;border-left-width:1.5pt;border-left-color:rgb(16,16,255);padding:0cm 0cm 0cm 5pt;margin-left:0cm;margin-right:0cm"><pre style="margin:0cm 0cm 0.0001pt;font-size:10pt;font-family:'Courier New'">Anybody has an idea what the part number for the continuous alpha pots is?<u></u><u></u></pre><pre style="margin:0cm 0cm 0.0001pt;font-size:10pt;font-family:'Courier New'">I just asked the other day for an encoder alternative with higher resolution, they would be great!<u></u><u></u></pre><pre style="margin:0cm 0cm 0.0001pt;font-size:10pt;font-family:'Courier New'">Maybe I'd have to ask my distributor in taiwan about them.<u></u><u></u></pre></blockquote><pre style="margin:0cm 0cm 0.0001pt;font-size:10pt;font-family:'Courier New'">Thanks for sharing, didn't know such a pot exists.<u></u><u></u></pre><pre style="margin:0cm 0cm 0.0001pt;font-size:10pt;font-family:'Courier New'">How would you tell the direction of the movement?<u></u><u></u></pre><pre style="margin:0cm 0cm 0.0001pt;font-size:10pt;font-family:'Courier New'"><u></u> <u></u></pre><pre style="margin:0cm 0cm 0.0001pt;font-size:10pt;font-family:'Courier New'">BTW, $15 ... hm ... needs quantities I'd guess ... <u></u><u></u></pre><pre style="margin:0cm 0cm 0.0001pt;font-size:10pt;font-family:'Courier New'"><a href="https://www.aliexpress.com/item/1pcs-ALPHA-RV112FF-40B3N-22F-0B10K-Encoder-360-degree-turn-gain-potentiometer/32751858615.html" style="color:purple;text-decoration:underline" target="_blank">https://www.aliexpress.com/item/1pcs-ALPHA-RV112FF-40B3N-22F-0B10K-Encoder-360-degree-turn-gain-potentiometer/32751858615.html</a><u></u><u></u></pre><pre style="margin:0cm 0cm 0.0001pt;font-size:10pt;font-family:'Courier New'"><u></u> <u></u></pre><pre style="margin:0cm 0cm 0.0001pt;font-size:10pt;font-family:'Courier New'">Thanks, Michael.<u></u><u></u></pre><pre style="margin:0cm 0cm 0.0001pt;font-size:10pt;font-family:'Courier New'"><u></u> <u></u></pre><pre style="margin:0cm 0cm 0.0001pt;font-size:10pt;font-family:'Courier New'"><u></u> <u></u></pre><pre style="margin:0cm 0cm 0.0001pt;font-size:10pt;font-family:'Courier New'"><u></u> <u></u></pre><pre style="margin:0cm 0cm 0.0001pt;font-size:10pt;font-family:'Courier 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