Purpose of this tutorial:
In this tutorial we will order a DC motor by the Arduino board:
1- When we press the push button, the motor turns
2- When we release the push button, the motor stops.
Necessary components
- Arduino UNO
- DC moteur
- relay
- push button
- connecting wires
- test plate
Mounting
As for the assembly, we can connect
For relay:
- (S) pin to pin 2 of Arduino
- (+) pin to 3.3V pin of Arduino
- (-) pin to GND pin of Arduino
- ON pin to 5V of Arduino
For DC motor:
- the first terminal to COM pin of the relay
- the second terminal to GND terminal of the Arduino
For push button:
- the first terminal to the digital terminal N°1 of Arduino
- the second terminal to the GND terminal of Arduino
Program
Here is the program that allows to control a DC motor by Arduino.
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const int bouton = 1; // the button is connected to pin 1 of the Adruino board const int relais_moteur = 2; // the relay is connected to pin 1 of the Adruino board int etatBouton; void setup() { pinMode(bouton, INPUT); pinMode(relais_moteur, OUTPUT); } void loop() { etatBouton = digitalRead(bouton); if (etatBouton == 0) // Push the push button { digitalWrite(relais_moteur, HIGH); // The motor starts to run } else // Release the push button { digitalWrite(relais_moteur, LOW); // The motor stops running } } |
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Stefan 18-11-2121
My DC motor doesn't turn on at all. I did the exact same thing as you. But if I plug in a LED instead of the motor, the LED turns on. Any ideas why? I connected the relay directly to arduino board..