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<div>I'm sure there are lots of folks here that could bang out the HC11 code if needed. You've even got EEPROM in there if memory serves. Two questions:</div>
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<div>1. How fast does the MIDI Channel selection have to be? Is this within a song or between songs?</div>
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<div>2. Are you using the MIDI IN on the bass pedals? (I guess possibly as a bass synth?) </div>
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<div>You could craft a MIDI command or sys ex message to alter the HC11's channel and then have a device (with buttons or footswitches) send this command to the bass pedals as needed. If (2 == true) then you might need merging too. </div>
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<div>Or you could just have local off and reboot MIDI commands sent to the bass pedals and you can hold down the pedal as before.</div>
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<div>GB</div>
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<div>------ Original Message ------</div>
<div>From: "Jean-Pierre Desrochers" <<a href="mailto:jpdesroc@oricom.ca">jpdesroc@oricom.ca</a>></div>
<div>To: "'Tom Wiltshire'" <<a href="mailto:tom@electricdruid.net">tom@electricdruid.net</a>></div>
<div>Cc: "'SDIY'" <<a href="mailto:Synth-diy@synth-diy.org">Synth-diy@synth-diy.org</a>></div>
<div>Sent: 2/9/2022 10:58:15 AM</div>
<div>Subject: Re: [sdiy] MIDI channel footswitch changer gizmo ..</div>
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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Tom,<o:p xmlns:o="#unknown"></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p xmlns:o="#unknown"> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="mso-fareast-language:EN-US">My MIDI Bass pedal is a VERY OLD design made in th 90’s using a Motorola HC11<br>
that I had on hand and was used to it (programming at work).<br>
Here are some pictures of my MIDI bass pedal.<br>
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<o:p xmlns:o="#unknown"></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="mso-fareast-language:EN-US"><o:p xmlns:o="#unknown"> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="mso-fareast-language:EN-US"><img src="cid:image005.jpg@01D81DBD.15AB4540" width="868" height="485" style="width:9.0416in;height:5.052in" id="Image_x0020_1"></span><span lang="EN-CA" style="mso-fareast-language:EN-US"><o:p xmlns:o="#unknown"></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="mso-fareast-language:EN-US"><img src="cid:image006.jpg@01D81DBD.15AB4540" width="870" height="443" style="width:9.0625in;height:4.6145in" id="Image_x0020_2"></span><span lang="EN-CA" style="mso-fareast-language:EN-US"><o:p xmlns:o="#unknown"></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="mso-fareast-language:EN-US"><img src="cid:image008.jpg@01D81DBD.15AB4540" width="872" height="420" style="width:9.0833in;height:4.375in" id="Image_x0020_3"></span><span lang="EN-CA" style="mso-fareast-language:EN-US"><o:p xmlns:o="#unknown"></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="mso-fareast-language:EN-US">The cabinet is walnut salvaged from a vintage Electrohome Kinsman Clarion organ..<o:p xmlns:o="#unknown"></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="mso-fareast-language:EN-US"><o:p xmlns:o="#unknown"> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="mso-fareast-language:EN-US">So far the MIDI channel is selected at power up. (channel 1 default).<br>
But if you keep pressed one of the first 16 keys down at power up<br>
this will be the new channel number.<br>
By the way this beast has its complete internal synth<br>
with a genuine ARP VCF module !<o:p xmlns:o="#unknown"></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="mso-fareast-language:EN-US"><o:p xmlns:o="#unknown"> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="mso-fareast-language:EN-US">Back to my needs..<o:p xmlns:o="#unknown"></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="mso-fareast-language:EN-US">No way I’ll get back to my original HC11 machine code (yes machine code) to include<br>
any MIDI channel editing since it will also involve salvaging the wood housing<br>
for some footswitches..<br>
The easiest way so far is a transparent MIDI IN/OUT device<br>
that will read 2 x UP/DOWN footswitches, display the new channel number<br>
on 2 x 7 seg. Display then grab any incoming MIDI commands that has MIDI channel number<br>
on the MSB side first byte, then replace it and send the edited command to the MIDI OUT.<br>
All other commands will get through this device untouched..<br>
I could even have another untouched MIDI OUT that would keep<br>
the original Bass pedal channel for other MIDI devices to drive..<o:p xmlns:o="#unknown"></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="mso-fareast-language:EN-US">These are my thoughts so far..<br>
Thanks for your curiosity Tom.<o:p xmlns:o="#unknown"></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="mso-fareast-language:EN-US"><o:p xmlns:o="#unknown"> </o:p></span></p>
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<p class="MsoNormal"><b>De :</b> Tom Wiltshire <<a href="mailto:tom@electricdruid.net">tom@electricdruid.net</a>>
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<b>Envoyé :</b> 9 février 2022 13:34<br>
<b>À :</b> Jean-Pierre Desrochers <<a href="mailto:jpdesroc@oricom.ca">jpdesroc@oricom.ca</a>><br>
<b>Objet :</b> Re: [sdiy] MIDI channel footswitch changer gizmo ..<o:p xmlns:o="#unknown"></o:p></p>
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<p class="MsoNormal"><o:p xmlns:o="#unknown"> </o:p></p>
<p class="MsoNormal">If the bass pedals are DIY, doesn't this count as a "feature request from a valued user", JP?!?<o:p xmlns:o="#unknown"></o:p></p>
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<p class="MsoNormal"><o:p xmlns:o="#unknown"> </o:p></p>
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<p class="MsoNormal">To put that another way, couldn't you reprogram the bass pedals to add the on-the-fly-midi-channel-change? Presumably there's some reason why not, since I'm sure you've thought of this. I'm curious what it is is all!<o:p xmlns:o="#unknown"></o:p></p>
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<p class="MsoNormal"><o:p xmlns:o="#unknown"> </o:p></p>
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<p class="MsoNormal">Tom<o:p xmlns:o="#unknown"></o:p></p>
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<p class="MsoNormal">On 9 Feb 2022, at 14:20, Jean-Pierre Desrochers <<a href="mailto:jpdesroc@oricom.ca">jpdesroc@oricom.ca</a>> wrote:<o:p xmlns:o="#unknown"></o:p></p>
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<p class="MsoNormal"><o:p xmlns:o="#unknown"> </o:p></p>
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<p class="MsoNormal">Hi all,<o:p xmlns:o="#unknown"></o:p></p>
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<p class="MsoNormal"><span lang="EN-CA">I own a DIY MIDI bass pedal that sets it’s MIDI channel on power up.<br>
You press one of the first 16 keys (2 octaves pedal board) while powering up<br>
and that’s the MIDI channel that remains. Ok.</span><o:p xmlns:o="#unknown"></o:p></p>
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<p class="MsoNormal"><span lang="EN-CA">But what if I need to change the MIDI channel on the fly while playing ??</span><o:p xmlns:o="#unknown"></o:p></p>
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<p class="MsoNormal"><span lang="EN-CA">I tried to find a footswitch gizmo that would have MIDI IN/OUT<br>
that I could connect the bass pedal MIDI OUT to the gizmo MIDI IN and set/change<br>
the gizmo MIDI channel using its footswitches then the incoming MIDI channel<br>
would be overridden by the gizmo’s channel and this one would use its channel<br>
number for my pedal board..</span><o:p xmlns:o="#unknown"></o:p></p>
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<p class="MsoNormal"><span lang="EN-CA">But no luck to find this type of MIDI ‘interface’..<br>
So far I’m thinking about building one..<br>
Any clue for this type of gadget to buy ?</span><o:p xmlns:o="#unknown"></o:p></p>
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<p class="MsoNormal"><span lang="EN-CA"> </span><o:p xmlns:o="#unknown"></o:p></p>
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<p class="MsoNormal"><span lang="EN-CA">Cheers,</span><o:p xmlns:o="#unknown"></o:p></p>
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<p class="MsoNormal"><span lang="EN-CA">Jean-Pierre</span><o:p xmlns:o="#unknown"></o:p></p>
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