I built an ESP32 PID controller to hold an oven at exactly 80°C for 12 hours — making perfect Clotted Cream at home. The system achieved ±0.3°C precision with just ~$15 in hardware. Full open source project with code, wiring diagram, and 3D-printable enclosure.
Month: April 2026
AI cooks very well these days. But someone still needs to know how much salt to add.
TL;DR: I built a professional temperature controller (ESP32, PID, auto-tune, presets, LCD graph, power loss recovery, cloud integration) in one day. Something that would normally take a month. The difference wasn’t the tool. It was the experience to know what to ask — and to notice when something was wrong without looking at the code. […]