Other Arduino Codes and Videos by Robojax
This code is to direction or rotation of DC motor with 2 relay. Basic code is simple control while the Advanced code makes use of Low-level trigger relay or High-level trigger relay possible.
/*
* Arduino code change the direction of rotation
* of a DC motor with 2 relays.
*
* This is basic code. I have advanced code which can be used in both
* for Low-level trigger and High-lever trigger relay with clean code
*
* Written by Ahmad Shamshiri for Robojax.com on
* Sunday August 18, 2019
* at 20:22 in Ajax, Ontario, Canada
* Watch video instruction for this code: https://youtu.be/JMBgGO07YLM
*
*
*
Get this code and other Arduino codes from Robojax.com
Learn Arduino step by step in structured course with all material, wiring diagram and library
all in once place. Purchase My course on Udemy.com http://robojax.com/L/?id=62
If you found this tutorial helpful, please support me so I can continue creating
content like this. You can support me on Patreon http://robojax.com/L/?id=63
or make donation using PayPal http://robojax.com/L/?id=64
*
* 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 relay1 = 2;
int relay2 = 3;
void setup() {
pinMode(relay1, OUTPUT);// set pin as output for relay 1
pinMode(relay2, OUTPUT);// set pin as output for relay 2
// keep the motor off by keeping both HIGH
digitalWrite(relay1, HIGH);
digitalWrite(relay2, HIGH);
Serial.begin(9600);// initialize serial monitor with 9600 baud
Serial.println("Robojax Motor Direction of Rotation");
Serial.println("Using 2 Relays");
delay(2000);
}
void loop() {
// Rotate in CCW direction
digitalWrite(relay1, LOW);// turn relay 1 ON
digitalWrite(relay2, HIGH);// turn relay 2 OFF
Serial.println("Rotating in CCW");
delay(3000);// wait for 3 seconds
// stop the motor
digitalWrite(relay1, HIGH);// turn relay 1 OFF
digitalWrite(relay2, HIGH);// turn relay 2 OFF
Serial.println("Stopped");
delay(2000);// stop for 2 seconds
// Rotate in CW direction
digitalWrite(relay1, HIGH);// turn relay 1 OFF
digitalWrite(relay2, LOW);// turn relay 2 ON
Serial.println("Rotating in CW");
delay(3000);// wait for 3 seconds
// stop the motor
digitalWrite(relay1, HIGH);// turn relay 1 OFF
digitalWrite(relay2, HIGH);// turn relay 2 OFF
Serial.println("Stopped");
delay(2000);// stop for 2 seconds
Serial.println("===============");
}// loop end This code is to control motor's direction of rotation with Low-level trigger relay or High-level trigger relay easily. Please watch video for details
/*
* Arduino code (Advanced) change the direction of rotation
* of a DC motor with 2 relays.
* This code can used with High-Level Trigger relay a
* and Low-Level Trigger relay. Watch video for instruction
*
* Written by Ahmad Shamshiri for Robojax.com on
* Sunday August 18, 2019
* at 20:22 in Ajax, Ontario, Canada
* Watch video instruction for this code: https://youtu.be/JMBgGO07YLM
*
Get this code and other Arduino codes from Robojax.com
Learn Arduino step by step in structured course with all material, wiring diagram and library
all in once place. Purchase My course on Udemy.com http://robojax.com/L/?id=62
If you found this tutorial helpful, please support me so I can continue creating
content like this. You can support me on Patreon http://robojax.com/L/?id=63
or make donation using PayPal http://robojax.com/L/?id=64
*
* 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 relay1 = 2;
int relay2 = 3;
const int triggerType = LOW;// your relay type
int relayOFF, relayON;// relay ON and OFF values for LOW and HIGH Trigger relays
void setup() {
pinMode(relay1, OUTPUT);// set pin as output for relay 1
pinMode(relay2, OUTPUT);// set pin as output for relay 2
if(triggerType ==LOW){
relayON = LOW;
relayOFF = HIGH;
digitalWrite(relay1, relayOFF);//keep both relay OFF so motor is stopped
digitalWrite(relay2, relayOFF);//keep both relay OFF so motor is stopped
}else{
relayON = HIGH;
relayOFF = LOW;
digitalWrite(relay1, relayOFF);//keep both relay OFF so motor is stopped
digitalWrite(relay2, relayOFF);//keep both relay OFF so motor is stopped
}
Serial.begin(9600);// initialize serial monitor with 9600 baud
Serial.println("Robojax Motor Direction of Rotation");
Serial.println("Using 2 Relays");
delay(2000);
}
void loop() {
// Rotate in CCW direction
motorCCW();
delay(3000);// wait for 3 seconds
motorStop();
delay(2000);
// Rotate in CW direction
motorCW();
delay(3000);// wait for 3 seconds
motorStop();
delay(2000);
Serial.println("===============");
}// loop end
/*
* motorCCW()
* controls the relay so the motor rotates in CCW
*/
void motorCCW()
{
digitalWrite(relay1, relayON);// turn relay 1 ON
digitalWrite(relay2, relayOFF);// turn relay 2 OFF
Serial.println("Rotating in CCW");
}// motorCCW()
/*
* motorCW()
* controls the relay so the motor rotates in CW
*/
void motorCW()
{
digitalWrite(relay1, relayOFF);// turn relay 1 OFF
digitalWrite(relay2, relayON);// turn relay 2 ON
Serial.println("Rotating in CW");
}//motorCW()
/*
* motorStop()
* controls the relay so the motor is stopped
*/
void motorStop()
{
digitalWrite(relay1, relayOFF);// turn relay 1 OFF
digitalWrite(relay2, relayOFF);// turn relay 2 OFf
Serial.println("Stopped");
} 
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