CATCAT先添加几个模块

添加气体传感器

ESP8266 ADC Specifications
When referring to the ESP8266 ADC pin you will often hear these different terms interchangeably:

ADC (Analog-to-digital Converter)
TOUT
Pin6
A0
Analog Pin 0
All these terms refer to the same pin in the ESP8266 that is highlighted in the next section.

ESP8266 ADC Resolution
The ADC pin has a 10-bit resolution, which means you’ll get values between 0 and 1024.