rmk
A Rust-based keyboard firmware library supporting layers, macros, real-time keymap editing, wireless BLE, and split keyboards.
What is rmk?
RMK is a keyboard firmware library written in Rust for building custom mechanical and ergonomic keyboards. It provides a modern, performant alternative to traditional C-based firmware like QMK, with built-in support for advanced features and wireless connectivity.
Keyboard enthusiasts, makers, and embedded developers building custom mechanical or ergonomic keyboards who want a Rust-based firmware with modern features. It's also suitable for those seeking wireless (BLE) keyboard capabilities with low latency.
Developers choose RMK for its combination of Rust's safety and performance, broad microcontroller compatibility via the embassy framework, and integrated features like Vial support for real-time keymap editing. It offers optimized latency (~2ms wired, ~10ms wireless) and power efficiency, with a configuration approach that balances simplicity (TOML files) and deep customization (Rust code).
Overview
Rust keyboard firmware library with layers, macros, real-time keymap editing, wireless(BLE) and split support
Use Cases
Best For
- Building wireless (BLE) custom keyboards with nRF52 or esp32 microcontrollers
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