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</o:shapelayout></xml><![endif]--></head><body lang=FR-CA link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>></span><span lang=EN-CA> I think you'd want your processor to implement some sort of "speed multiplication" for your rotary encoder(s). If you're at C0 and you want it to be C8, that could take a while to get there (assuming that going > > below C0 doesn't wrap around to C8) Either the faster you turn it, the more values it skips, or maybe having a "shift" button that would put the encoder into 5x range or something.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-CA>Every encoder increment/decrement would be a semitone.<br>So to change one note of a sequence would be fast enough (I think..)<br><br></span><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>></span><span lang=EN-CA> I don't understand what you mean by "change any CV 'on the fly' when playing a sequence". <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-CA>I meant turning any pots or encoder on a specific column<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-CA>And change its CV value while the sequence is playing.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-CA> <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-CA>> Would not selecting a step via a button and turning the (single) encoder fit this? <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-CA>Yes it would nicely.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span lang=FR style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>De :</span></b><span lang=FR style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Chromatest J. Pantsmaker [mailto:chromatest@azburners.org] <br><b>Envoyé :</b> 24 juillet 2020 13:12<br><b>À :</b> Jean-Pierre Desrochers<br><b>Cc :</b> SYNTH DIY<br><b>Objet :</b> Re: [sdiy] DOTCOM Analog Sequencer.. next project startup..<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>I think you'd want your processor to implement some sort of "speed multiplication" for your rotary encoder(s). If you're at C0 and you want it to be C8, that could take a while to get there (assuming that going below C0 doesn't wrap around to C8) Either the faster you turn it, the more values it skips, or maybe having a "shift" button that would put the encoder into 5x range or something.<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I don't understand what you mean by "change any CV 'on the fly' when playing a sequence". Would not selecting a step via a button and turning the (single) encoder fit this? Or do you mean to change any step from an external CV?<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Surely, the MCU would generate the CV 'on the fly' no matter if the note was set via analog pots, a bank of encoders, or a single directable encoder.<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Fri, Jul 24, 2020 at 6:50 AM Jean-Pierre Desrochers <<a href="mailto:jpdesroc@oricom.ca">jpdesroc@oricom.ca</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm'><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA>> Are you wanting to break out of the traditional and frankly pretty boring play-every-note / all-notes-same-length vibe of "normal" step sequencers?</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA>Yes. I need adjustable step durations with forward, backward or random playback availability.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA>> Smooth encoder or detented encoder?</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA>Doesn’t matter..</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA>> What maximum clock rate are you aiming at?</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA>Around 16Hz max sequence speed (micro-controller running at 20Mhz)</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA>> One feature of the Doepfer A-155 (easily my favourite "traditional" step sequencer, particularly with the A-154 sequencer controller attached) that I really, really like is the ability to change the pot range — fine > > control when you need it, or wide span when you need it.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA>A rotary encoder would be a fixed and very wide span CV adjustment on each steps.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA>Still thinking.. (computing..)</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA>Jean-Pierre</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span lang=FR style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>De :</span></b><span lang=FR style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> john slee [mailto:<a href="mailto:indigoid@oldcorollas.org" target="_blank">indigoid@oldcorollas.org</a>] <br><b>Envoyé :</b> 23 juillet 2020 22:33<br><b>À :</b> Jean-Pierre Desrochers<br><b>Cc :</b> SYNTH DIY<br><b>Objet :</b> Re: [sdiy] DOTCOM Analog Sequencer.. next project startup..</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Are you wanting to break out of the traditional and frankly pretty boring play-every-note / all-notes-same-length vibe of "normal" step sequencers?<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Memory requirements should be negligible with any modern microcontroller, considering the number of steps and the resolution required — even if you added pattern and song storage, which would work well with rotary encoders.<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I have assumed you will have a microcontroller regardless of pots/encoder choice, as you'd not need to add many features before the micro was cheaper than the equivalent CMOS logic.<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Smooth encoder or detented encoder?<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>What maximum clock rate are you aiming at?<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>One feature of the Doepfer A-155 (easily my favourite "traditional" step sequencer, particularly with the A-154 sequencer controller attached) that I really, really like is the ability to change the pot range — fine control when you need it, or wide span when you need it.<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>John<o:p></o:p></p></div></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>On Fri, 24 Jul 2020 at 10:09, Jean-Pierre Desrochers <<a href="mailto:jpdesroc@oricom.ca" target="_blank">jpdesroc@oricom.ca</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5.0pt'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I'm starting to think about my next DOTCOM analog module:<br>a 16 steps sequencer (maybe 32 steps).<br>So far I'd have 2 choices for the final number of steps CV adjustments.<br><br>- Standard CV pots sequenced with gates<br> pros: cost is cheap, the note value is physicaly kept by each pots<br> cons: bad note precision on large span (I'd like a 61 notes span on each<br>CV adj),<br> span must be kept not too large..<br><br>- Rotary encoders<br> pros: Very large CV span can be achieved on each steps (beyond 61 notes), <br> quantization easy to be achieved on each steps adjustments. <br> cons: expensive (are they all ?), need for data memory to keep every note<br>values (micro-processor needed)<br><br>All the gates could be generated by the same micro or<br>from a precise adjustable master clock<br><br>What do you think from your past experiences ?<br><br>Jean-Pierre<br><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><o:p></o:p></p></blockquote></div></div></div><p class=MsoNormal>_______________________________________________<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><o:p></o:p></p></blockquote></div></div></body></html>