Digital signal processing means the creation of sound effects via digital processing.

It requires:

• MCU: a microcontroller like arduino or ESP32
• DAC/ADC: digital to analog and analog to digital, at least 12bits
• control:
• analog: GPIO
• midi: with opto-cuopler

Axoloti is a DSP programmable board.

We build an axoloti pedal and program the effect bank.

Pedal

Axoloti connected to a button pedal via ethernet cable

We put a display, buttons and poti in the case

We build an axoloti controller pedal plus controls in the case. We program the effect bank.

We connect two buttons, two potis, a display and two ethernet ports for the pedals

We build a pedal with 6 buttons and an expression (from a gaming joystick)

We program the effect bank and push it to github>

We connect the pedal to the axoloti and the music box.