These are the commercial products I've replaced with ESP32-powered variants.

Compared to the old 8-bit Arduinos, it’s incredible how cheap modern microcontrollers like the ESP32 have become. But there are even cheaper options out there if you don’t need that kind of horsepower ...

ESPHome is a free and open-source framework for getting firmware to run on cheap microcontrollers like the ESP32, ESP8266, and RP2040. If that sentence sounds complicated to you, don’t worry. ESPHome ...