I haven’t seen many synth projects using the Black (or Blue) Pill board, but this one looks interesting. Has anyone given it a try? I was wondering if one can save patches or map the parameters to a MIDI controller using the synth’s GUI.
If it understands CC messages then its a perfect candidate for one of my MIDI controllers where the controller stores the patches by name and just sends CC messages to the synth and passes on all notes etc.
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Do you have a standalone version of this anywhere? I was just looking for one.
I don’t have a standalone version as such as each is tailored to the synth it controls, but if you took the Poly 61 editor then that would be a good base and cheap to build.
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Thanks, I’ll check that one out
No problem, I would just say that it doesn’t need that 3.3v regulator circuit using the LM317T, the esp32 has enough 3.3v power output to support the design.
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Maybe it’s just me, but I can’t find the download of the code or midi CC details. It seems to have about 40 rotary controls and 10 buttons or so. Easily covered by upto 8 mcp23017 chips and a Teensy 4.1 or ESP32. I watched the videos on his GUI to get a feel for things, maybe it’s just me being silly but I thought why not use 0.96” 128*32 OLED displays for options like modwheel routing information. A simple button next to the display changes the routing and updates the display. Upto 8 displays attached on an 8 way i2c mux similar to how the XVA1 synth editor works, so on patch recall each display would be updated with the correct filter type, routing etc.
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Kinda off topic but since you mentioned the 0.96” 128x32 OLEDs I recently found that a 2.23” 128x32 OLED and a 1.54” 128x64 OLED should both fit in a 1U front panel. Might be useful for those of us with older eyes. 
(iirc they use SSD1305 drivers)
Oh, and the files for the BP Synth are linked in the video https://www.youtube.com/watch?v=JttEPK7bwHw
Files can be found at
https://drive.google.com/file/d/1bqjaeJ6gewC67N-3Oe65PlxxNieLI0Tk/view
https://drive.google.com/file/d/1n2XfGjbSSe4Vy9_zRFdDweYG-hGERByX/view
(I haven’t checked them beyond that they exist)
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My idea so far is to buy a second hand CME UF5 because it’s black and 4 octaves, then build the BP synth and a controller into the chassis as a complete mono synth using the small displays where info is needed on recall, but still maintaining a large display for editing and parameters etc.
I would throw away the actual UF5 controls from the panel and use the available space for the editor controls and program storage.
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I’ve just bought a cheap Axiom 2 octave full size keys midi controller and it was cheap enough for me to throw it away if it all goes terribly wrong, but I intend to build the BP Synth and a controller with memories into the case.
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Yeah, thats gonna be bigger than the keyboard
That’s awesome.
And silly.
I want one! 
Good news, the M Audio Axiom 25 arrived today, a bit later because of Russians destroying most of our delivery company warehouses, but it got here, I just took it apart expecting one big PCB with everything combined, but I’m pleasantly surprised, the encoders, display, pads, modwheels are all on separate boards going to a main midi board in the base of the unit, so this means that all the parts can be removed easily and replaced with my own editor and I can use the screen location for mysin screen.
And a bonus, it has aftertouch which most modern cheap controllers dont have.
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