This is a 'simple' thermostat controller, using a DS18B20 oneWire temperature sensor on a WeMos D1 Mini Pro. The DS18B20 has a +/-0.5 °C tolerance and is perfectly stable (and even cheaper). I tried ...
The Actuator (Arduino R4 WiFi): Operates as a Local HTTP Server that receives parsed JSON commands from the ESP32 to trigger physical components like LEDs or relays. Scalability & Future-Proofing The ...