Introduction: Use Transistor As Motor Driver : Basic

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Hello everyone, In this instructable we will be using transistor as a Motor Driver.

Actually, We can't say it as a Motor Driver as it can just toggle motor ON or OFF rather than controlling the motor speed or direction.

But, Using the transistor protects our Arduino from burning out. As ordinary DC motors runs on High Amps or consume more current than what an Arduino can supply.

Step 1: Gather the Parts

  • An Arduino
  • A breadboard
  • A 220ohm resistor
  • A 2N2222 transistor
  • A DC motor
  • A 9V battery
  • Some jumper or hookup wires

Step 2: Wiring

Hookup all the components according to the circuit diagram shown above.

Step 3: The Code

As I mentioned above we can just toggle motor ON or OFF.

So, The following code turns the motor ON for 10 sec then turns it OFF for 5 sec and cycles through the process.

void setup() {

pinMode(13, OUTPUT);

}

void loop() {

digitalWrite(13, HIGH); // Turn the motor ON

delay(10000); // Wait for 10 secs

digitalWrite(13, LOW); // Turn the motor OFF

delay(5000); // Wait for 5 secs

}

Step 4: Done

Now Power the arduino and see your motor spinning.

Thanks for viewing.

Please write your questions or suggestions below.