Small dc motor speed control

[Paul Martin Black]

Hi i wonder if anyone can point me in the right direction.

I need to control the speed of motor using pwm with closed loop feed back, i understand its possible to use the back emf of the motor but dont know how to implement it.

 

[BobK]

Let me google that for you

Bob

 

[Paul Martin Black]

Hi Bob
Many thanks im' not very computer savvy

Paul

 

[Minder]

One method here for fixed speed, including code.
https://www.romanblack.com/onesec/DCmotor_xtal.htm
For feedback of a DC or BLDC motor you need something like this.
M.

 

[BobK]

The point is that this topic is more complicated than you can address in a forum post. You will have to do some research on this before you even know enough to get help here. Once you have read up on it, we will be happy to answer questions.

Bob