Bi Polar Stepper Motor With L293D and Arduino

Hi,

I had a Bi Polar stepper motor lying, which I'll be using to create a Dolly for my DSLR.

Components used:

1. Arduino Uno
2. Stepper Motor ML17A3 B (This is the model no printed on motor)
3. Breadboard
4. L293D
5. 9v Battery Pack
6. Some Jumper cables

To make the connections, follow the circuit diagram.

The images show the step by step connections made on bread board. I started off with GND pins and then to the motor and then Arduino and finally the Battery Pack.

I used the code from Arduino IDE. I tried with stepper_OneRevolution and stepper_OneStepAtATime example and they worked fine. The code is listed below.

/*
This program drives a unipolar or bipolar stepper motor. The motor is attached to digital pins 8 - 11 of the Arduino. The motor should revolve one revolution in one direction, then one revolution in the other direction. Created 11 Mar. 2007 Modified 30 Nov. 2009 by Tom Igoe */

#include

const int stepsPerRevolution = 200; // change this to fit the number of steps per revolution // for your motor

// initialize the stepper library on pins 8 through 11:

Stepper myStepper(stepsPerRevolution, 8,9,10,11);

void setup() {
// set the speed at 60 rpm:
myStepper.setSpeed(60);
// initialize the serial port:
Serial.begin(9600); }

void loop() {

// step one revolution in one direction:
Serial.println("clockwise");
myStepper.step(stepsPerRevolution);
delay(500);
// step one revolution in the other direction:
Serial.println("counterclockwise");
myStepper.step(-stepsPerRevolution);
delay(500); }

The testing video.