ok yer on

八x二 (aka "8x2" or "hachi-ni")

八x二 is a compact midi controller with 16 potentiometers, 2 buttons, and 8 RGB leds.

It is available as a DIY kit with SMD components already assembled. Only thru-hole soldering required.

MIDI I/O

• TRS MIDI in, out and thru
• Auto sensing TRS MIDI Type-A/Type-B input with LPZW Auto Crossover circuit
• Switch for TRS MIDI Type-A/Type-B output
• USBMIDI

Power

• USB-C
• Lipo Battery (optional)

Hacking

• RP2040 processor
• STEMMA-QT connector (i2c)
• Breakout connections for 3 analog (A0, A1, A2) and 3 digital pins (D4, D11, D12)

FATES -- discontinued

Fates is an audio and UI platform for Raspberry PI 3 Model B+ and Raspberrry Pi 4 Model B that provides a stereo audio codec with headphone driver, 3 (or 4) encoders, 3 buttons, and a grayscale display.

It is a DIY version of the monome norns (Fully compatible with monome's norns software).

Specs:

• WM8731 codec with headphone driver
• NHD-2.7-12864WDW3 128x64 grayscale OLED display (available separately)
• 3 buttons
• 3 encoders (optional 4th encoder for Orac or other software)
• 2x 1/8in inputs
• 2x 1/8in outputs
• 1/8in stereo headphone out
• USB-C power jack

Fates was designed for Raspberry Pi 3 Model B+ and Raspberry Pi 4 Model B. It's not been performance tested with earlier Raspberry Pi models.