Stomp box
- ndlcorporate
- Aug 28, 2019
- 1 min read
Low-cost, portable, guitar multi-effects processor

This example uses the MODEP software image from blokas.io which features the MOD DUO open-source audio effects emulation software by Mod Devices. Coupled with a low-cost audio/guitar USB interface, a very flexible, portable and affordable virtual stomp box can be created.
Hardware shown
Tablet Frame Kit for Raspberry Pi and Arduino, Model AZ8, by Novel Design Lab
Amazon Fire 8" tablet (2018)
Raspberry Pi 3
Behringer Uphoria UM-2 audio USB interface
Power supply for R-Pi: lithium battery expansion board "RPI Power Pack V1.2" with USB cable (v2.x not compatible)
3-Ring Mini Binder, Logo, Kraft by Novel Design Lab
Miscellaneous items: microSD card, guitar and cables, headphones
Software
Installed on Raspberry Pi:
MODEP https://blokas.io/modep/
Set up: follow the installation instructions at the link above. The software must be configured for the specific audio-USB interface (or audio HAT) used (the system will not work and MODEP server won't load if this configuration isn't done). See configuration instructions here: https://blokas.io/modep/docs/Sound-Card-Setup/
Installed on tablet:
Network browser app pre-installed on tablet (e.g. Silk, Chrome, etc.)
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