Driving a DC motor using Arduino UNO and L293D driver.

Driving a DC motor using Arduino UNO and L293D driver.

Components required:

1)      Arduino UNO

2)      L293D IC

3)      Breadboard

4)      DC Motor(s)

5)      Connecting wires / jumpers

Connection  

Arduino to L293D to DC Motor.

Pinout diagram of L293D IC

Connectivity

1	Arduino	L293D	Motor
2	D2	1A(2)
3	D3	1B(7)
4	D4	1E(1)
5		M1A	Terminal 1
6		M1B	Terminal 2
7		+VMotor  to External Source
8	GND	GND

Arduino program to control the motor

const int M1A = 2; const int M1B = 3; const int M1E = 4; // the setup function runs once when you press reset or power the board void setup() {   // initialize digital pin 13 as an output.   pinMode(M1A, OUTPUT);   pinMode(M1B, OUTPUT);   pinMode(M1E, OUTPUT); } // the loop function runs over and over again forever void loop() {   //Enable   digitalWrite(M1E, HIGH);        // forward   digitalWrite(M1A, HIGH);   digitalWrite(M1B, LOW);   delay(5000);              // wait for 5 seconds   //Reverse   digitalWrite(M1A, LOW);   digitalWrite(M1B, HIGH);   delay(5000);              // wait for 5 seconds      }