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Saturday, 19 April 2014

Control DC Motor Using Arduino and ULN2803

by realfinetime  |  in uln2803 at  00:04

If we want to control a DC motor using Arduino, we have to go for some kinds of drivers such as ULN2803 or L293DNE. I had already published one blog on controlling a DC motor using L293D and Arduino. Controlling a DC motor using ULN2803 is pretty simple. But the problem is, we cannot change the direction of rotation of motor by this circuit. If you are not familiar with ULN2803, read this blog to get a brief idea.


Circuit diagram to control a DC motor using Arduino and ULN2803 is given below.

Now upload the following program to arduino board.

int motor = 13;

void setup() {                
  pinMode(motor, OUTPUT);     
}

void loop() {
  digitalWrite(motor, HIGH);
  delay(1000);   
  digitalWrite(motor, LOW);  
  delay(1000);               
}

Output :
Motor will rotate for one second. Then motor will turn off for next one second and the process continues for ever.

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IMPORTANT NOTICE

All the circuits, published in this blog is only after testing and getting proper results in my private lab. When you try these circuits, you should check the supply voltage, polarity of components, presence of childrens nearby and shorts in the circuits. This website will not be responsible for any harm happened to you or your components caused by your carelessness.

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