runningbird / runningbird_guitar_pedal

A digital guitar multi-effect pedal project made with Daisy seed and Arduino.

Daisy Guitar Pedal

A digital guitar multi-effect pedal project made with Daisy seed and Arduino.
This is a hybird pedal, using Daisy Seed as DSP processor and a analog module for better overdrive and distortion tone.

Signal Path

The guitar signal path:

Guitar Output -> Input Buffer -> Input 0 of Daisy -> Daisy
(-> Output 1 of Daisy -> Analog Module -> Input 1 of Daisy -> Daisy) //optional
-> Output 0 of Daisy -> Final Ouptut

The Analog Module contains overdrive, distortion, and a tube boost.

Features

• A 128*64 Monochrome LCD and a 8*8 LED matrix for display.
• 10 presets controlled by two footswitchs. (up and down)
• Each preset has 10 "effect slots", the user can insert any effects they like and arrange them in any order.
• Easy UI navigation with four arrow keys and an enter button.
• IR based guitar amp simulation.
• On/Off of each analog modules can be controled digitally by relays.
• All presets and options are stored in an external EEPROM chip.
• All control inputs are handled by interrupts.

Controls

4 foot switches, 5 pushbuttons, and a rotary encoder.
5 pushbuttons are for up / down / left / right / enter.

List of effects

• Reverb
• Pitchshifter
• Analog Module
• Overdrive (digital)
• Fuzz (digital)
• Compressor
• Gain
• Delay
• Chorus
• Flanger

Dependencies

• My fork of DaisyDuino
• EasyButton
• RotaryEncoder
• u8g2
• extEEPROM
• Adafruit MCP23017 Arduino Library