@wateru: ESP8266’s analog pin accepts voltage range in 0-1V (it’s 5V tolerant, but anything above 1V will all be converted to 1023, the maximum analog value). Just use two resistors to form a voltage divider to lower the value range to 0~1V.
@wateru: ESP8266’s analog pin accepts voltage range in 0-1V (it’s 5V tolerant, but anything above 1V will all be converted to 1023, the maximum analog value). Just use two resistors to form a voltage divider to lower the value range to 0~1V.