Nantonos

Should be better documented, but

You would probably want to use an SPI DAC in that case. There are many options at various bit depths (from 12 to 18 bits) , both single and multi-channel. Most are surface-mount, but a few through-hole DAC chips still exist.

No, because the Sustain pedal might be pressed (which delays acting on Note Off) and recently released keys may still be sounding due to the release phase of an ADSR envelope.

@tim: You should be able to use the PITCHBEND & MODWHEEL pots exactly as wired. PITCHBEND usually has some mechanical mechanism to return it to center when not activated, so I'll assume that this is the case in my functional description below...

The bill of materials and build guide is online if you want to source yourself https://ornament-and-cri.me/build-it/ You could also try a kit, with all smd soldered already https://www.thonk.co.uk/shop/plum-audio-ocp/ If you plan on using...

Looks good. No matter which kind of cable or PCB is used, be careful about the total power supply capacitance if it will ever be hot plugged. The Teensy 4.1 design assumes a SD card with very little capacitance. If you have several uF power...

UTF-8 test Το Teensy είναι μια εξαιρετική πλατφόρμα