esp32 program to read an analog pin and post it to an ifttt makers service endpoint. My use case is to periodically tweet the value of a soil moisture sensor. I'm using an esp32 thing and an YL-69 moisture sensor.
NB! It matters a great deal which ADC pin you use for analogRead() because including WiFi.h apparently disables all ADC2_* channels!
If you platformio installed, you should just be able to run platformio run --target upload in the project root to upload it to your esp32 board.