pedalSHIELD UNO is an open-source Arduino UNO programmable guitar pedal.

The idea is to build a guitar pedal with easy-to-find parts and have fan creating your own sounds from the first day without deep knowledge in DSP programming or electronics.

Everybody can share their ideas or codes in the forum where you can also download the already coded effects (booster, distortion, fuzz, delay, vibrato, tremolo, wave-generator, metronome, etc).

We created some documents so you can do the project easily:

It is an economic platform to start developing your interest in effects, audio electronics, guitar pedals or digital signal processing.

The whole project is Open-Source and Open-Hardware, all the schematics and files are free. The design was also created using KiCAD, an open source ECAD for Win-Linux-Mac so everybody can contribute.

All the parts where selected trying to find the easiest to source parts, check the complete bill of materials below:

Capacitors

C5,C2, C7, C8, C9 6.8n

C3, C6, C10 4.7u

C1, C11 100n

C4 270p

Resistors

R12,R13, R10, R9, R6, R4, R3 4.7K

R5, R7, R8, 100K

R1, R2 1M

R11 1M2

Others

RV1 500K

D1 Led 3mm blue

U1 TL972

pdip-8 IC Socket dip 8 socket

SW1 3DPT

SW2 Toggle switch

SW3, SW4 Pushbutton

Conn1,2,3,4 1 40 pin header