- Beeper is a toy subtractive synthesizer designed for learning sound design with minimal controls.
- It features 12 presets with demo loops, keyboard controls for selection and adjustment, and options like Sustain, Solo, and Mute.
- Built in C for ESP32 and compiled to WASM for web, it includes two instrument tracks and a drum track, but lacks MIDI, saving, or polyphony.
- The project is open-source under MIT license, suitable for games, sequencers, or educational purposes, with a focus on simplicity and hands-on exploration.