This is a STEM based project consisting of an AQIX and CWX3 ESP32-C3 Air Quality Monitor IoT Weather Station - SDK Board. The output ThingSpeak data display is from a test site showing examples of data produced from an AQIX board.
Using an ESP8266 ESP-01 module and an Arduino Pro Mini 3.3V I wirelessly update all outputs from my thermostat to here for data analysis and because it's cool. This requires a voltage divided rectifier since thermostats run at least 24 VAC RMS.