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Lesson 12: Using Reed Sensor Switch with Arduino
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Reed switch or sensor is sensor when it is gets closer to magnetic field, it establishes contact bewtween two pin. We detect the conect using Arduino and take action to do something.
A tilt sensor can be installed on a robotic arm and when the arm moves to certain position we either turn ON something or turn OFF .
/*
* Lesson 12 Reed Switch
* This is the Arduino code for reed switch to
* turn a relay ON which the relay
* can turn a light or alarm ON
* reed switch is connected to pin 2
* Relay is connected to pin 8
Please watch video instruction here https://youtu.be/RS7PTtxtlQ4
This code is available at http://robojax.com/course1/?vid=lecture12
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Get the code for the course: http://robojax.com/L/?id=339
* Written by Ahmad Shamshiri for Robojax, robojax.com http:youTube.com/robojaxTV
* Date: Dec 05, 2017, in Ajax, Ontario, Canada
*
* This code is "AS IS" without warranty or liability. Free to be used as long as you keep this note intact.*
* This code has been download from Robojax.com
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 reedInPin = 2;// define pin 2 for reed switch
int relayPin = 8;// pin connected to relay
int onTime= 200; // time in melliseond ON and wait before make another reading.
int offTime= 200; // time in melliseond OFF and wait before make another reading.
void setup() {
//Robojax Step By Step Arduino Course http://robojax.com/L/?id=338
Serial.begin(9600);
// out pins
pinMode(reedInPin, INPUT);// define reedInPin as input
pinMode(relayPin, OUTPUT);// define relayPin as output for relay
Serial.println("Robojax Reed switch");
}
void loop() {
// read the REED switch
if(digitalRead(reedInPin) == LOW){
Serial.println("Switch ON ");
digitalWrite(relayPin, HIGH); // Turn the relay ON
delay(onTime);// keep the relay or switch ON for the onTime
}else{
digitalWrite(relayPin, LOW);// Turn the relay OFF
Serial.println("Switch OFF ");
delay(offTime);// wait offTime before reading again
}
//Robojax Step By Step Arduino Course http://robojax.com/L/?id=338
}// loop
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