A basic circuit demonstrates the way for form one potential network with a ESP32 S3 module and a 1k ohm resistance. Using positioning dual resistors to order, you can reduce the voltage level for a measurement suitable http://theengineerstore.in/products/waveshare-esp32-s3-microcontroller-2-4-ghz-wi-fi-development-board-dual-core-processor-with-frequency-up-to-240-mhz