This project is a small bare-metal firmware example for the ATtiny412 using avr-gcc and PlatformIO.
Primary use case is for incorporating smart switching using a relay for true bypass for guitar pedal effects.
Note
Currently a work in progress. Please use examples in references for examples that will actually work.
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Garman, M. MCU Relay Controller. GitHub repository. https://github.com/matt-garman/mcu-relay-controller
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Amplified Parts Amplified Parts. https://www.amplifiedparts.com/tech-articles/relay-true-bypass-switching-4