arduino激光报警器tripwire
记得小时候看的国外电影，尤其对里面的激光报警很感兴趣。看了几个程序，搜索了下资料。就搭建了个激光报警电路
把这个很简单的程序给更多和我一样的小白参考下
arduino这么多io口，可以完全做一个以其为核心的功能完善的报警系统了。
太多啦下一个项目的主角就是你了先看一个简单点的
int ldrPin = A4; // the battery and 10K pulldown are connected to a0
int sirenPin = 11;
int ledPin = A0;
long ldrValue1, ldrValue2;
void setup(void) {
pinMode (sirenPin,OUTPUT);// set the siren pin as output
pinMode (ledPin,OUTPUT);// set the siren pin as output
pinMode (ldrPin,INPUT);// set the siren pin as output
//Serial.begin(9600);
}
void loop(void) {
ldrValue1 = analogRead(ldrPin);
delay(10);
ldrValue2 = analogRead(ldrPin);
if (ldrValue1-ldrValue2 > 20){
digitalWrite(sirenPin,HIGH);
digitalWrite(ledPin,HIGH);
delay(1000);
}
else{
digitalWrite(sirenPin,LOW);
digitalWrite(ledPin,LOW);
}
//Serial.print("Analog reading = ");
//Serial.println(ldrValue1); // the raw analog reading
}
再加个警车警报
int ldrPin = A4; // the cell and 10K pulldown are connected to a0
int sirenPin = 11;//pin 3 selected!!
int ledPin = A0;
long ldrValue1, ldrValue2;
void setup(void) {
pinMode (sirenPin,OUTPUT);// set the siren pin as output
pinMode (ledPin,OUTPUT);// set the siren pin as output
pinMode (ldrPin,INPUT);// set the siren pin as output
//Serial.begin(9600);
}
void loop(void) {
ldrValue1 = analogRead(ldrPin);
delay(10);
ldrValue2 = analogRead(ldrPin);
if (ldrValue1-ldrValue2 > 20){
//digitalWrite(sirenPin,HIGH);
digitalWrite(ledPin,HIGH);
//void beep(){
// Toggle the buzzer at various speeds
for (byte x = 255 ; x > 50 ; x=x-2)
{
for (byte y = 0 ; y < 5 ; y=y+2)
{
digitalWrite(sirenPin,HIGH);
//digitalWrite(sirenPin, HIGH);
delayMicroseconds(x);
digitalWrite(sirenPin, LOW);
delayMicroseconds(x);
}
//delay(1000);
}
}
else{
digitalWrite(sirenPin,LOW);
digitalWrite(ledPin,LOW);
}
//Serial.print("Analog reading = ");
//Serial.println(ldrValue1); // the raw analog reading
}
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