Firmware turning Raspberry Pi Pico into a standalone CW Morse keyer
The project implements a full CW keyer firmware for RP2040/RP2350 boards, supporting multiple keying modes, USB MIDI/CDC interfaces, OLED display, and radio key output. It combines existing Rust crates for keyer logic and CW decoding into a ready‑to‑flash device, useful for amateur radio operators seeking a compact, self‑contained keyer. Compared to software‑only solutions, this runs on cheap microcontroller hardware, offering low latency and standalone operation.
View on GitHub →SP5TLS/rp-keyer