#include <Arduino.h>
#define Sensor A5
#define LED 13
#define Sensor_DO 2
unsigned int SensorValue = 0;
void setup()
{
pinMode(Sensor_DO,INPUT);
pinMode(Sensor,INPUT);
pinMode(LED,OUTPUT);
Serial.begin(9600); //设置通讯的波特率为9600
Serial.println("Welcome to use!"); //发送的内容
Serial.println("Made by Beetle Electronic Technology!"); //发送的内容
}
void loop()
{
SensorValue = analogRead(Sensor); //读取Sensor引脚的模拟值，该值大小0-1023
Serial.print("AD Value = ");
Serial.println(SensorValue); //将模拟值输出到串口
if( digitalRead(Sensor_DO) == LOW ) //当DO引脚接收到低电平时候说明，模拟值超过比较器阀值
{ //通过调节传感器上的电位器可以改变阀值
Serial.println("Alarm!"); //报警
digitalWrite(LED,HIGH); //LED点亮
}
else
{
digitalWrite(LED,LOW); //LED熄灭
}
delay(1000);
}
|
