![]() ADC Voltage range in ESP8266 chip: 0 to 1V (for example: ESP-07 chip, ESP-12E chip, …). ![]() ADC Voltage range in ESP8266 development boards: 0 to 3.3V (for example: ESP8266 12-E NodeMCU Kit, WeMos D1 Mini, …).However, most ESP8266 development boards come with an internal voltage divider, so the input range is 0 to 3.3V. The ESP8266 ADC pin input voltage range is 0 to 1V if you’re using the bare chip. The ADC pin has a 10-bit resolution, which means you’ll get values between. When referring to the ESP8266 ADC pin you will often hear these different terms interchangeably:Īll these terms refer to the same pin in the ESP8266 that is highlighted in the next section. In this tutorial we’ll show you how to use analog reading with the ESP8266 using Arduino IDE, MicroPython or Lua firmware.Īs an example, we’ll show you how to read analog values from a potentiometer. This means that those ESP8266 boards can read analog signals. ![]() Both ESP8266-12E and ESP8266-07 have one ADC pin that is easily accessible. ![]()
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