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[on:]

I have wired up the circuit in the arduino cookbook on page 289 as is,for now three times and it seems not to be working,has any one ever tried that before?I have attached the image.
And about the PID Library,i want to incorporate a PID code into the code for my bipolar steppr motor,how can i do this,the code for the motor is this,
#include <Stepper.h>

const int steps = 200;

Stepper Stepper(steps, 8,9,10,11);           

void setup() {
 
  Stepper.setSpeed(60);
 :
  Serial.begin(9600);
}

void loop() {
 
   Serial.println("clockwise");
 Stepper.step(steps);
  delay(500);
 
  Serial.println("counterclockwise");
 Stepper.step(-steps);
  delay(500);
}

[Reply #1 on:]

Have you connected the motor power ground to the arduino ground?

In the diagram you have pins 2, 3, 4 & 5 connected to the motor, where as in your sketch you have pins 8, 9, 10 & 11 defined as the motor pins.

[Reply #2 on:]

Yeah i put the digital pins from 8 through 11 not as indicated

[Reply #3 on:]

Yes this seems to be all too common with people asking for help, not providing a true picture of what you have. How do you expect to get help if you provide false information?

OK so lets start again.

What happens? Do you feel the motors energise when the power is applied? Do you here any vibrations when the motor is trying to turn?

[Reply #4 on:]

No they are no energisations particulary with this circuit.

[Reply #5 on:]

You need to measure if the motor voltage is on the pin of the driver chip. Also the ground of the power supply must be connect to the ground of the arduino.