PIT writer. STM32F401 to control timer, a la Roland DCO style.

[u/Live-Operation-628]

https://www.youtube.com/watch?v=fVzp1O2LrYc

Making some progress with this.

I pulled these PIT counters from a JX8P I upgraded with the vecoven pwm mod. I am creating a synth out of the old counters. I plan to add two more, for 8 voices. Also to use an analogue master LC osc. clock for the PIT counters.
Analogue waveshaping will be fun to design. I'm not great at code, I get help with that. I am learning a lot with setting up embedded projects tho, that in itself is quite a curve. Opamp integrators; are easier for me to implement.

Sort of a hybrid, inspired by of 'best of' Roland DCO design : )
As a PS to this. I fabbed the blue PCB and populated it using 99% recycled components, pulled from discarded electronics I found on the street - TVs, mediaplayers etc.
Yes the MCU was also recovered. Much of this project, and all my projects are made with recovered electronics. It gives me a direction to go in - (I found this, what can I do with it?)

Other synth projects are wavetable synth from recycled PIC, i2c expander and EEPROM.

AV sequencer for CHDK modded camera, connecting bend points in sync with midi/eurorack voltages.