If you’ve ever put your finger on an ESP8266 module when it’s really working, you’ll know what went wrong here: the ESP8266 heated up the board and gave a high reading on the temperature sensor.

I/O is limited. You’ll have to work with that. Situating the ESP-C3 The ESP8266 started life as a simple AT-command-set WiFi modem, and a bunch of hackers proved that it had a lot more to offer.