Turn every escape room puzzle into a Home Assistant device

Executive Summary

Djair Guilherme has released two open source Arduino libraries on Hackster that make an escape room puzzle show up in Home Assistant as a device. esp32_escaperoom runs on ESP32 boards and handles WiFi and MQTT. propmaker_escaperoom runs on the RP2040 using the Adafruit PropMaker Feather , has no network and talks to other puzzles over RS485. Both share one engine: a puzzle state machine, audio, a pin contract per board, and a hardware abstraction layer that scans the I2C bus at boot.

Open Silicon & Gate-Level Hardware Inspection

From a silicon and hardware engineering viewpoint: - **Interface Neutrality:** Mitigates dependency on proprietary BSPs, empowering open toolchains to address hardware directly. - **Supply Chain Verification:** Schematics and open pinouts allow deterministic audits against silicon errata. - **Lifecycle Decoupling:** Decouples physical hardware utility from commercial vendor end-of-life obsolescence.

Impact on the Open Ecosystem

Ensures that computational autonomy remains in the hands of the architect rather than closed silicon vendors.