This Repository is a work in progress and may not build or compile. It does not yet contain key information such as schematic diagrams or hardware information and makes no garantees about the fitness or quality of the code.
The firmware is build around the famous software sampler VST MDA ePiano. At the moment the max. polyphony is set to 96 instead of 8 in the original software.
- Raspberry PI Pico
- Pico Audio module (Pimoroni Audio Pack)
- 128x64 OLED screen (SH1106)
- 1 rotary encoder (KY-040)
- MIDI In via USB or Serial
The basic sceleton for the i2s sound output, freeRTOS tasks and USB midi input are taken from the PicoADK project (https://github.com/DatanoiseTV/PicoADK-Firmware-Template.git). The RP2040 is overclocked to 402MHz. The pins for connecting the hardware to the pico are defined in the /includes/project_config.h file
#define PIN_MIDI_RX 5
#define PIN_I2S_DOUT 9 // i2s sound module
#define PIN_I2S_BCK 10
#define PIN_I2S_WS 11
#define PIN_ENC_BTN 13 // Rotary Encoder
#define PIN_ENC_A 20
#define PIN_ENC_B 21
#define PIN_LED 25 // Onboard LED
#define PIN_OLED_SDA 2 // I2C for the OLED
#define PIN_OLED_SCL 3git clone --recursive https://github.com/Michi71/PicoEPiano.git picoepiano
cd picoepiano
export PICO_SDK_FETCH_FROM_GIT=1
mkdir build && cd build
cmake .. (optionally add -GNinja)
make (or ninja when you have used -GNinja)Now you can find a main.uf2 in the build folder, which is your firmware.
Plug in the USB cable while holding the BOOT button. After that, a RPI-RP2 disk volume will appear. Simply drag and drop the UF2 file to this drive and the Pico will reboot after a moment, the drive will disappear and your firmware will be running.
Please check the Pico Getting Started Guide on how to install the toolchain and required libraries for your OS.