DC Motor speed control

Other Hardware Motors, Mechanics, Power and CNC
1

Hey guys,
I am working on a small project where I have to control a DC motor.
The motor is connected to my arduino using a MOSFET and a 9V battery,
while I was trying to control the motor's speed by changing the output of the digital pin the motor kept operating at the same speed and when i entered a value lower than 128 it stopped completley.

My question is how do I control the motor's speed?
Thank you

2

Which pin did you use? You must use one of the PWM pins if you want to use analogWrite().
If its not that simple we will need more information ( part numbers, schematic, etc) to make any more guesses.

3

alka:
Which pin did you use? You must use one of the PWM pins if you want to use analogWrite().
If its not that simple we will need more information ( part numbers, schematic, etc) to make any more guesses.

I changed the output to one of the PWM pins and now it works.
thank you, just a newbie mistake by me ...