ericwood.org
A step sequencer for Adafruit's RP2040-based macropad
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# Macropad Sequencer
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A minimal USB MIDI step sequencer that runs on the [Adafruit Macropad](https://www.adafruit.com/product/5128) written in Rust using Embassy.
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A minimal USB MIDI step sequencer that runs on the [Adafruit Macropad](https://www.adafruit.com/product/5128) written in Rust using [Embassy](https://embassy.dev).
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This is more of a tech demo than anything else!
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I'm using it to mess around with ideas I have around structuring non-trivial Embassy apps and will probably come back and add more features whenever I need a break from life.
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## Usage
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This isn't the ideal hardware interface for a step sequencer, but I've (mostly) done the best with what I have.
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- Each key is a step in the sequence
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- Press and release a key to toggle the step on and off
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- Hold a single key down to change the note and velocity
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- Hold down multiple keys to only play
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- Hold down multiple keys to cycle between those notes
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## Flashing
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- "Gate" (percentage of step note is on)
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- Menu scrolling to support more than 4 options per menu
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- A little synth engine that uses the onboard speaker (need to make use of that second core!)
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- More than 12 steps?