When the ESP-8266 first arrived, it was a marvel. For two dollars, you could buy a simple module that could serve as a bridge between WiFi networks and microcontroller projects. It understood the ...
Of all the people I was looking forward to meeting at Supercon, aside from my Hackaday colleagues with whom I had worked for five years without ever meeting, was a fellow from Germany named Matthias ...
The project uses an ESP32C3, BMP280 temp & pressure sensor, a relay, and a sacrificed USB wall charger to convert mains AC down to low voltage DC. The ESP32 gets power via USB. The COM and NO relay ...