enchance dc motor driver circuit.

[Rooney_04]

hi all,
below is my driver circuit for controlling motor. the pin1 of optocoupler or 4n25 is connected with my arduino( the arduino giving pwm signal to the optocoupler). the circuit works fine and motor is rotating but not at full speed eventhough i set arduino(microcontroller) to "255" value which the maximum speed". I believe the current is not enough to run the motor at full speed and the motor supply i use is 9V. So member i would to know how can enhance this circuit ? TQ

 

[Prototyp_V1.0]

What about to measure voltage over the motor?

How much current do the motor draw?

 

[prmurthy]

Repeated the thread again

Somebody has replied earlier thread.

https://www.edaboard.com/threads/206669/