Image: reddit.com · Cosori Gooseneck Kettle - Reverse Engineer BLE Protocol - Integrate into ESPHome
A Cosori kettle's BLE protocol reverse engineered for ESPHome
A gooseneck kettle's Bluetooth protocol was reverse engineered with Claude Sonnet and GPT-5 so an ESP32 can hold the connection and control it from Home Assistant.
Credits
- Reddit poster SignificantActuary Source ↗
- Repository account barrymichels Source ↗
Earliest dated source:
The full story
A Cosori gooseneck kettle's app allows only one connection at a time, so one phone holding it in the background locked the other person out. Its owner reverse engineered the kettle's BLE protocol using GPT-5 and Claude Sonnet, and an ESP32 near the kettle now holds the connection and exposes it to Home Assistant through ESPHome.
He says he had to help the AI when it couldn't work out parts of the protocol, but it did most of the work under his direction.
How it was done
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Sources
From a short post by the maker, so the details are as they tell them.
- Reddit: Cosori Gooseneck Kettle - Reverse Engineer BLE Protocol - Integrate into ESPHomeReddit poster: SignificantActuaryPosted
The maker's post on r/homeassistant.
If it disappears: archived copy of Reddit: Cosori Gooseneck Kettle - Reverse Engineer BLE Protocol - Integrate into ESPHome (opens in a new tab)
- The code: github.comRepository account: barrymichels
The project on GitHub.