Electrosmash-Pedal Pi-Zero for RPi

Started by Redvers, February 26, 2016, 05:40:35 AM

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Redvers

So I have a pi zero on the way , then I learn that a midi+dac hat might be coming out for it: https://zuzebox.wordpress.com/2016/01/18/four-new-raspberry-pi-zero-add-on-boards/ That would be a compact box of tricks to go with the GP-10.

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#1


https://www.electrosmash.com/pedal-pi

Pedal PI - Raspberry Pi ZERO Guitar Pedal.
Pedal-Pi is a lo-fi programmable guitar pedal that works with the Raspberry Pi ZERO Board. The project is totally Open Source & Open Hardware and made for hackers, programmers and musicians that want to experiment with sounds and learn about digital audio.




You can code your own effects using standard C and get inspiration from the ready-to-use effects from the forum, like the Clean/Transparent, Booster/Volume, Distortion, Fuzz, Delay, Echo, Octaver, Reverb, Tremolo, Looper, etc.

The project was created with the aim of having fun and learning about guitar pedals. If you want to program digital audio effects in C without deep knowledge on DSP languages or electronics, this pedal is for you. But take also into consideration that it is only 12 bits and does not feel like a finished pedal that you could buy in a shop.

 
Specifications.

Based in Raspberry Pi Zero (1GHz ARM11 core).
Analog stages using MCP6002 rail-to-rail operational amplifier.
ADC: 12bits / Sampling Rate 50Ksps (MCP3202).
Output Stage: 12 bits (2x6bits PWMs running in parallel)
Pi Zero:
1GHz ARM11 core.
512MB of LPDDR2 SDRAM.
Micro-SD card slot.
Interface:
2 Configurable push buttons.
1 Configurable switch.
1 programmable blue led.
True Bypass Foot-switch.
Connectors:
Input Jack, 1/4 inch unbalanced, Zin=1MΩ.
Output Jack, 1/4 inch unbalanced, Zout=100Ω.
Power supply: power taken from the Pi Zero board (micro-USB).








https://www.electrosmash.com/pedal-pi