A bluetooth/USB MIDI controller/footswitch with a built-in guitar tuner, powered by STM32F4.
The idea is to get an inexpensive stompbox that meets all the needs of a musician in a live perfomance. All the parts of this projects are found in the open-source GPL license which means free to use and modify, you can build your own midifoo with the instructions below.
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USB MIDI (Class-Compliant):
Automatically recognized by computers and compatible audio devices. -
Bluetooth MIDI:
Low-latency wireless communication for pratical use. -
Built-in Guitar Tuner:
Audio input and output for instrument signal. -
Lots of MIDI Note Banks.
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12+ Hours of Inenterrupt Use in Battery.
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Dual Function Switches:
Quick and Long Press triggers different MIDI Messages. -
Expression Pedal Input
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MIDI Potentiometer
The gerber files for the PCB and .stl model for the 3d printed case can be found in this repo: https://github.com/rbmannchued/midifoo-kicad
Clone the repo with submodules:
git clone --recurse-submodules https://github.com/rbmannchued/midifoo.git
Build the binaries:
cd src/
make
Flash the firmware using ST-Link:
make flashbin
For usb midi just connect a cable to your pc, is plug and play. For bluetooth you will need something like Hairless MIDI ( https://github.com/projectgus/hairless-midiserial ) or ttymidi ( http://www.varal.org/ttymidi/ ). Works on both Linux and Windows.