Hi guys,
Im currently successfully controlling a light with the motion module. The code used is simple.
code >
int irmotionPin = 4; // Pin of IR Motion Sensor
int relayPin = 8; // Pin of Relay Module
void setup(){
Serial.begin(9600);
pinMode(relayPin, OUTPUT); // Set Pin connected to Relay as an OUTPUT
digitalWrite(relayPin, LOW); // Set Pin to LOW to turn Relay OFF
}
void loop(){
while (digitalRead(irmotionPin) == HIGH) { // If Motion detected
digitalWrite(relayPin, HIGH); // Turn Relay ON
Serial.println("Relay is ON");
delay(500);
}
digitalWrite(relayPin, LOW); // Turn Relay OFF
Serial.println("Relay is OFF");
delay(500);
}
<
I have since found another piece of code for the PIR that might improve things ( from this site )
code >
/*
- //////////////////////////////////////////////////
- //making sense of the Parallax PIR sensor's output
- //////////////////////////////////////////////////
- Switches a LED according to the state of the sensors output pin.
- Determines the beginning and end of continuous motion sequences.
- @author: Kristian Gohlke / krigoo () gmail () com / http://krx.at
- @date: 3. September 2006
- kr1 (cleft) 2006
- released under a creative commons "Attribution-NonCommercial-ShareAlike 2.0" license
- Creative Commons — Namensnennung - Nicht-kommerziell - Weitergabe unter gleichen Bedingungen 2.0 Deutschland — CC BY-NC-SA 2.0 DE
- The Parallax PIR Sensor is an easy to use digital infrared motion sensor module.
- (http://www.parallax.com/detail.asp?product_id=555-28027)
- The sensor's output pin goes to HIGH if motion is present.
- However, even if motion is present it goes to LOW from time to time,
- which might give the impression no motion is present.
- This program deals with this issue by ignoring LOW-phases shorter than a given time,
- assuming continuous motion is present during these phases.
*/
/////////////////////////////
//VARS
//the time we give the sensor to calibrate (10-60 secs according to the datasheet)
int calibrationTime = 30;
//the time when the sensor outputs a low impulse
long unsigned int lowIn;
//the amount of milliseconds the sensor has to be low
//before we assume all motion has stopped
long unsigned int pause = 5000;
boolean lockLow = true;
boolean takeLowTime;
int pirPin = 3; //the digital pin connected to the PIR sensor's output
int ledPin = 13;
/////////////////////////////
//SETUP
void setup(){
Serial.begin(9600);
pinMode(pirPin, INPUT);
pinMode(ledPin, OUTPUT);
digitalWrite(pirPin, LOW);
//give the sensor some time to calibrate
Serial.print("calibrating sensor ");
for(int i = 0; i < calibrationTime; i++){
Serial.print(".");
delay(1000);
}
Serial.println(" done");
Serial.println("SENSOR ACTIVE");
delay(50);
}
////////////////////////////
//LOOP
void loop(){
if(digitalRead(pirPin) == HIGH){
digitalWrite(ledPin, HIGH); //the led visualizes the sensors output pin state
if(lockLow){
//makes sure we wait for a transition to LOW before any further output is made:
lockLow = false;
Serial.println("---");
Serial.print("motion detected at ");
Serial.print(millis()/1000);
Serial.println(" sec");
delay(50);
}
takeLowTime = true;
}
if(digitalRead(pirPin) == LOW){
digitalWrite(ledPin, LOW); //the led visualizes the sensors output pin state
if(takeLowTime){
lowIn = millis(); //save the time of the transition from high to LOW
takeLowTime = false; //make sure this is only done at the start of a LOW phase
}
//if the sensor is low for more than the given pause,
//we assume that no more motion is going to happen
if(!lockLow && millis() - lowIn > pause){
//makes sure this block of code is only executed again after
//a new motion sequence has been detected
lockLow = true;
Serial.print("motion ended at "); //output
Serial.print((millis() - pause)/1000);
Serial.println(" sec");
delay(50);
}
}
}
<
Where and how do I add the relay code into the newer PIR code above? Some thing in the code I don''t need is the "int ledPin = 13"
Is it just a matter of tagging the relay trigger code after the motion code? Or at some point in between?
Thanks in advance.