一、硬件上：

1、使用esp32开发板的04引脚与AO连接，检测AO引脚的电平

二、软件上：

1、使用Arduino快速完成开发

2、源码：

// Potentiometer is connected to GPIO 04 (Analog ADC1_CH3) 
const int adcPin = 4;// variable for storing the potentiometer value
int adcValue = 0;float AirQuality;void setup() {// put your setup code here, to run once:Serial.begin(115200);
}void loop() {// put your main code here, to run repeatedly:// Reading potentiometer valueadcValue = analogRead(adcPin);// Serial.println(adcValue);//Convert to air qualityAirQuality = ((float)((float)adcValue * 3.3)/4096);Serial.printf("adc: %d,air: %f\r\n",adcValue,AirQuality);delay(500);
}