The ESP8266 was a game changer for me. I had some STM32 boards and some Arduinos but when we got wifi and low level hardware things really got fun. I have a te

The ESP8266 was a game changer for me. I had some STM32 boards and some Arduinos but when we got wifi and low level hardware things really got fun. I have a temperature controller and a platinum temperature sensor with a dedicated 3 wire board controlled by SPI, 30 bucks. Controlling 12V 5A motors with PWM another 30. All in C++ on the board, integrated with mqtt, nodered and Caddy for the UI SSL. So easy with parts from Ali and datasheets available. (Sometimes even useful existing libraries).