Both esp8266 12e and esp8266 07 have one adc pin that is easily accessible this means that those esp8266 boards can read analog signals in this tutorial well show you how to use analog reading with the esp8266 using arduino ide micropython or lua firmware. Nodemcu analog input on arduino ide arduino 1 comment this tutorial of robo india explains the basics of input and output programming in physical computing world this tutorial teaches how to take analog input from nodemcu 1 introduction to read an analog signal through the nodemcu analog to digital conversion is required a nodemcu has 10 bit adc which means it scales an analog signal . Nodemcu pinout is having labels d0 to d8 and rx tx but when programming it using arduino ide we observe that its labels are not matching with io connections lets see actual connections of nodemcu with esp8266 ie esp 12 nodemcu is an open source iot platform it includes firmware which runs on the esp8266 wi fi soc from espressif systems and hardware which is based on the esp 12 module. I used the example that is in the arduino ide and it is assumed that i should see what has read the analog input in form of bit and it is correct but if i put 33v in the analog input i should see on the monitor serial 1023 or 1024 because the analog port of the nodemcu works 0v to 33v so if i put 0v in the analog input i should see 0 and
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