Modular music CV/Gate sequencer STM32F103C8 (blue pill) written in Rust.
Keyboard is a custom PCB mounted with Cherry MX keys. It is based on the following schematic:
Currently only 2 DACs in use:
STM32 PIN PA0 COL0 (keypad) PA1 COL1 (keypad) PA2 COL2 (keypad) PA3 COL3 (keypad) PA4 COL4 (keypad) PA5 COL5 (keypad) PA8 ROW0 (keypad) PA9 ROW1 (keypad) PA10 ROW2 (keypad) PB13 DAC1 & DAC2 SPI SCK (MCP4921) PB15 DAC1 & DAC2 SPI MOSI (MCP4921) PB12 DAC1 CS (MCP4921) PB14 DAC2 CS (MCP4921) PA6 LED data in (WS2812) | Key | Description |
|---|---|
| Shift+Fn1 | Switch between recording mode: gate or cv |
| Shift+Fn2 | Clear steps |
| Shift+Forward | Next track |
| Shift+Back | Previous track |
| Fn1+Forward | Toggle play/stop |
| Fn1+Back | Toggle play/pause |
| Fn1+Step | Select track number |
| Fn2+Step | Randomize CV or Gate with probability based on the selected step |
| Forward | Next octave |
| Back | Previous octave |
cargo install cargo-embed rustup target add thumbv7m-none-eabi cargo embed --releasecargo embed