Zour-Dough: A Zig-Powered Environment for Sourdough Fermentation

Sourdough starters love a warm home! But keeping a stable temperature for multiple days in a row can be energy-intensive and difficult to achieve in normal households. Zour-Dough is an embedded system built on the Raspberry Pi Pico that provides a controlled environment for sourdough fermentation, with firmware written in Zig.

The system uses sensors to monitor temperature and a two-point heating mechanism to regulate the environment throughout the fermentation process. For this kind of system, Zig helps keep firmware stable and timing predictable, without an interpreter sitting between the code and the hardware. This talk follows the journey of Zour-Dough from prototype to first working version, including practical lessons learned along the way such as hardware setup difficulties, USB CDC pitfalls, and flashing quirks. It also presents a development workflow that removes most of the repetitive flash-and-debug steps, allowing developers to stay focused on firmware logic. These lessons are especially relevant to Zig-based projects on RP2040-class hardware using USB serial output.

In the end, the starter gets its warm home, and the developer gets a smoother path from code to hardware.

About the speaker...

Zig beginner & Bread lover; https://github.com/mlnvgl/zour-dough