Editing esp (section)

===Analog Input===
The ESP8266 only supports analog reading in ADC0 and it is usually marked on the silkscreen as A0.

The maximum input voltage of the ADC0 pin is 0 to 1V if you’re using the ESP8266 bare chip. If you’re using a development board like the ESP8266 12-E NodeMCU kit, the voltage input range is 0 to 3.3V because these boards contain an internal voltage divider.

You can learn how to use analog reading with the ESP8266 with this guide:<br>
[https://randomnerdtutorials.com/esp8266-adc-reading-analog-values-with-nodemcu/ ESP8266 ADC – Read Analog Values with Arduino IDE, MicroPython and Lua]

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