device-envoy wraps common peripheral patterns into reusable components, while keeping Embassy’s async model underneath. So far it includes:

• LED panels (text, animation, graphics, color correction, power limiting)
• Automatic Wi-Fi provisioning
• Audio clip playback over I2S (runtime sequencing, volume control, compression)
• Type-safe flash storage
• IR input using PIO with decoding to enum variants
• Servo control with animation

It runs fully bare metal on top of Embassy. No OS. No runtime.

Repository:

(Crates.io and docs.rs links are in the repo.)

I recently gave a talk at the Seattle Rust User Group showing demos and usage code:

device-envoy: Making Embedded Fun​ with Rust—by Carl Kadie—Seattle Rust User Group, February 2026

I think of this as an experiment in whether bare-metal embedded systems can move closer to application-style development, similar in spirit to GUI or web programming, while still preserving explicit control of hardware.

If anyone else is exploring application-level programming on top of Embassy, I’d enjoy connecting.

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