Back to Step by Step Course by Robojax
Lesson 16, Robojax Arduino Step by Step Course: Motion Sensor
This is the Arduino code this code when motion is detected, will send signal to pin 8 which can be a buzzer or relay
/*
* Robojax Arduino Step By Step Course
* Lesson 16 HC-SR501 Motion Sensor
* Arduino code for HC-SR501 PIR Motion Sensor
this code when motion is detected, will send signal to pin 8 which can be a buzzer or relay
Please watch video instruction here https://youtu.be/piuUfGVafC0
This code is available at http://robojax.com/course1/?vid=lecture11
with over 100 lectures Free On YouTube Watch it here http://robojax.com/L/?id=338
Get the code for the course: http://robojax.com/L/?id=339
* on January 16, 2019 at 20:23 in Ajax, Ontario, Canada
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
int pirPin = 2;// input pin from PIR sensor
int alarmPin = 8;// Alarm pin to turn alarm ON
void setup() {
//Robojax Arduino Step By Step Course http://robojax.com/L/?id=338
Serial.begin(9600);// setup Serial Monitor to display information
pinMode(pirPin, INPUT);// Input from sensor
pinMode(alarmPin, OUTPUT);// OUTPUT to alarm or LED
}
void loop() {
//Robojax Arduino Step By Step Course http://robojax.com/L/?id=338
int motion =digitalRead(pirPin);// read input pin signal
if(motion == HIGH){
Serial.println("Motion detected");
digitalWrite(alarmPin,HIGH);
}else{
Serial.println("===nothing moves");
digitalWrite(alarmPin,LOW);
}
delay(500);
}
The least I expect from you is to give the video a thumbs up and subscribe to my channel. I appreciate it. I have spent hundreds of hours making these lectures and writing code. You don't lose anything by subscribing to my channel. Your subscription is a stamp of approval for my videos, helping more people find them and, in turn, helping me. Thank you!
If you found this tutorial helpful, please support me so I can continue creating content like this. support me via PayPal 
**** AFFILIATE PROGRAM **** We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.