Hacking Bluetooth to brew coffee in GitHub actions

In plain words

This project reverse-engineered a De'Longhi coffeemaker's Bluetooth protocol and built a Rust command-line tool to control it. The maker integrated it with GitHub Actions, allowing users to trigger coffee brewing by filing issues in a repository through their browser or GitHub app. Issue templates define different coffee options. It's designed for developers interested in IoT automation and Bluetooth protocol exploration.

written from the facts on this page · September 2026

From the sources

Part 1 of reverse-engineering a Bluetooth coffeemaker: BTLE basics, traffic sniffing, and sending brew commands from Rust.

This is going to be a long journey in three parts that covers the odyssey of getting a new coffeemaker, learning BTLE and how it works, reverse-engineering the Bluetooth interface and Android applications for the coffeemaker, writing a Rust-based CLI interface , and finally, hooking it all up to a GitHub actions bot that lets you brew a coffee just by filing an issue ! I’ve always been pretty content with using whatever coffeemaker I had nearby. For the last two or three years I’ve been using an old 2-in-1 Breville YouBrew coffeemaker, with a grinder built-in. It was a workhorse and worked perfectly until this September. A few months ago the machine asked me to run the regular descaling…from grack.com

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