Hey, whatever works. I’m just letting you know about it 
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Yeah food for thought, it’s evolved quite considerably since my first ideas… Originally it had a 3rd party 64ch multimux…
I think boards should be arriving this week. Should start the code but part of me wants to see the hardware first…
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New brain board,
Nano fits and so does the I2c mux
Only issue spotted is that SD1 and SC1 are reversed on the mux.
Control panel in old V1 board. Does not quite fit in this one as the pots are already soldered.
Sub board. Header pins are one pin out of line. I must have moved it between V1 and V2. Not insurmountable and won’t happen on next batch as they are both V2 in the same design for
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Looks badass dude! And I actually like the red a lot
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So much progress in so little time!
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Spent half of yesterday troubleshooting the bloody thing!
As soon as it was plugged in all LED’s were on full time… I looked through everthing. Checked code, remade the sub board as the DIP socket looked dodgy. Tried a different mux. checked the diagrams, rechecked… Etc… What I noticed was that it did work when powerd over USB and not on power from the Brain board, and everything else worked when tested in isolation.
The only difference was that the MUX was getting 6V to pass through to the outpts ( the idea was to compensate for LOSS across the diodes and get close to 5V CV… ) . When I removed the 6V all lights were off, and when substituded with 5V it worked!!
So I will have to ditch the 6V idea or introduce some transistors to switch the 6V…
I have noticed the VCA does not respond well to the CV, not sure why yet.
Buildig the second control board today.
Rob
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Well I have two control boards working…
But I have stupidly neglected the fact that a 3 bit number only has 8 states ( which is fine if you don’t need OFF ) but as we have 4 muxes, depending on the mode some of them need to be in the disabled state…
I can get it sorted with some minor revisions on the fly, and then update the PCB’s…
Getting close!!
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Fixed for controller 1 
only took a few mins to fit a jumper wire on the brain and control
I also noticed my legends at the top of the control panel say “CV2” and “CV2” 
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Sam’s “Infinate” sequencer, is probably a better idea overall. I may go that route for another version.
I am still looking to deliver 0-5V out of the CV, the nice thing is that the small cheap sub board can be altered without any changes to the brain or control boards.
I love the look, kind of USSR 70’s gymnasium
Rob
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Well I have fixed a couple of the little electrical issues.
Fixed a couple of mechanical ones.
And done the front panel for the brain.
worn out but will get them ready to go to print tomorrow and hopefully that’s all the hardware done for now!
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made use of the old original brain PCB’s and built something funky
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I can expect a customs charge card ie expect >>>> probably £3 in tax and £8 to royal mail for doing it…
In Transit
2020/07/17 04:38:56 Item has been included in a Royal Mail Sales Order.
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the boards arrived as per the mail day thread, then realised i need some spst switches…
also the distance between the control board and it’s jack board is too great for normal pin headders so had to order some long ones.
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Probably should be on the dumbass thread, the panel was designed seemingly against the “Flip” side of the board. This kind of killed the old energy for a week or two 
It’s been re-worked but I am holding off reprinting the panel as there’s some more stuff I need to order.
Presently the brain PCB that I have has one known fault where a data line out of the I2C mux controls to LCD’s. should be an easy bodge but the PCB has also been updated.
I need to crack on and test all the other functional aspects before ordering yet again.
Did start writing a bit of the code before this (sh)iteration arrived …
Rob
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It has a sort of Star Trek TOS look.
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Yes, i love the look. @twinturbo I’m prolly going to request one of these once you finalize the design. If you are ok with distributing it.
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Not usually what’s meant by a reversible panel 
. But, yeah, once you get it ironed out, I’d like to be on the list for one. Make back some of the development cost 
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