Raspberry Pico based audio mixer, built to work with Deej. It's great for managing a mix between daily apps like Spotify / Discord / Firefox / etc.

Model files do not have the front text included.

Printing:

• Bottom plate is printed in PETG as it's a bit more flexible and more durable for the M3 nuts. PLA would probably be fine too.
• Top plate is PLA
• Knobs are PLA

All parts are printed at 20% infill. It doesn't matter much except for the knobs, where you could probably go even lower.

Parts:

• 1x Raspberry Pico
• 1x Micro USB cable
• 4x KY-040 rotary encoders
• 4x generic two position flip switches
• 8x M3x8 screws
• 8x M3 hexagonal nuts
• 1x Small prototype board - maybe not needed, but it makes it easier to manage 3V and GND lines for the encoders and switches
• Wires of your choice - preferably smaller and softer since it's quite a tight fit.

Code:

CircuitPython Code - uses rotaryio for the encoders - when setting up the Pico with CircuitPython make sure to use 7.1.x, as to support a newer version of the library with an encoder step parameter.