04 电位器采集电压
时间:2022-09-20 07:30:00
通过改变电位器获得A0引脚的电压
int A0_value; //保存A0采集到的A/D转换数值 float valtage_value; ///电压值 void setup() { // put your setup code here, to run once: Serial.begin(9600); } void loop() { // put your main code here, to run repeatedly: A0_value=analogRead(A0); Serial.print("A/D转换数值:"); Serial.println(A0_value); valtage_value=5.0*A0_value/1024; Serial.print("输出电压值:"); Serial.println(valtage_value); delay(500); }