Teensy 3.2 code for a simple 12 knob, 3 button midi controller.

• Hardware
  • teensy 3.2 board
  • 12 10K linear pots
  • 3 momentary on arcade style buttons
• Wiring knobs (with pot pins facing down):
  • Connect rightmost leg to AGND.
  • Connect leftmost leg to 3.3V.
  • Connect middle leg to A0 pin.
  • Et voila, voltage divider across Teensy analog pin. Rinse and repeat for pins A0-A11.
• Wiring buttons
  • Connect switch lugs to AGND, digi pins 0-2.

Space PCB mount Alpha pots (or similiar) evenly on perfboard, and use attached drill guide to drill a hammond 1590BBS enclosure to mount the pot board easily inside the enclosure.

Install the buttons_knobs.ino firmware using the arduino development environment.