Real-time state
WebSocket subscriptions keep track changes, playback position and volume in sync, with REST polling as a fallback.
Open-source hardware / 2026
CYD Home Assistant Media Remote.
A small touchscreen that makes a Home Assistant media player feel physical again — album art, playback, seeking and volume without reaching for a phone.
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ESP32 · C++ · PlatformIO · Home Assistant
Music control with a dedicated place.
The project started with a simple wish: see what is playing and control it from a dedicated display instead of opening another app.
It grew into firmware supporting multiple inexpensive ESP32 display boards, real-time Home Assistant updates, streamed cover artwork, touch controls and secure on-device configuration.
Built for constraints
Bounded streaming and image decoding keep large Home Assistant responses inside the ESP32’s memory limits.
Secure setup
Tokens stay off source control, configuration happens on-device and HTTPS connections fail closed when identity cannot be verified.
Repeatable builds
Native policy tests and a multi-board CI matrix check the logic and all supported firmware variants.
What it demonstrates
Good product work can start with a personal annoyance — and still demand careful engineering, security and documentation.