PIR SENSOR WITH ARDUINO ACTIVATE STEPPER MOTOR
DESCRIPTION
ACTIVATE STEPPER MOTOR USING MOTION SENSOR
Hi this instactable to rotate stepper motor foreword and backward when pir read some motion.
1-ARDUINO UNO
2-PIR(HUMAN MOTION SENSOR)
3-L293D (MOTOR DRIVER)
4-UNI-POLAR STEPPER MOTOR(28BYJ-46)
5-SOME WIRES
YOU CAN GET INFORMATION ABOUT STEPPER MOTOR AND PIR SENSOR BY REFER TO THIS PAGE:
http://learn.adafruit.com/adafruit-arduino-lesson-...
/*
Arduino with PIR motion sensor
activate camera motor projects
Writes by Engineer Mohanad Hameed */
#include //include stepper library int led = 13; // the pin that the LED is attached to
int sensor = 2; // the pin that the sensor is attached to
int state = LOW; // by default, no motion detected
int val = 0; // variable to store the sensor status (value)
int in1Pin = 12; //the pin that the phase 1 is attached to
int in2Pin = 11; //the pin that the phase 2 is attached to
int in3Pin = 10; //the pin that the phase 3 is attached to
int in4Pin = 9; //the pin that the phase 4 is attached to
int step_num =700;
Stepper motor(64, in1Pin, in2Pin, in3Pin, in4Pin);
void setup() {
pinMode(led, OUTPUT); // initialize LED as an output
pinMode(sensor, INPUT); // initialize sensor as an input
pinMode(in1Pin, OUTPUT); // initialize in1pin as an output
pinMode(in2Pin, OUTPUT); // initialize in2pin as an output
pinMode(in3Pin, OUTPUT); // initialize in3pin as an output
pinMode(in4Pin, OUTPUT); // initialize in4pin as an output
motor.setSpeed(300); //speed of the motor }
void loop(){
val = digitalRead(sensor); // read sensor value
if (val == HIGH) { // check if the sensor is HIGH
digitalWrite(led, HIGH); // turn LED ON
motor.step(step_num); //rotate the motor foreword
delay(1000); // delay 300 milliseconds
motor.step(-step_num); //rotate the motor backward
delay(300);
if (state == LOW)
{ state = HIGH; // update variable state to HIGH
}
}
else {
digitalWrite(led, LOW); // turn LED OFF
motor.step(0);
if (state == HIGH) {
state = LOW; // update variable state to LOW
}
}
}
