How to get different OUTPUT voltages in ARM micro?

[Bruce McC]

Hey buddies,what's up?!

I'm using an ARM cortex M0 micro called FRDM-KL25Z (what a funky name! I knew that! ) . I'd like to run a simple motor at different speeds. How can I get different OUTPUT voltages to operate this armature ?

Do I need any extra component which generates altering DC voltages? if so what is this device called?

tnx guys

 

[Harald Kapp]

The standard way to control a motor's speed today is pulse width modulation (PWM).

 

[Bruce McC]

It's a small DC motor(like an Armature). It is supposed to get connected to an ARM micro-controller and automatically change its speed. Actually I'd like to know how I can get altering OUTPUT voltages in this microcontroller. Should I use any special device which generates different voltages or does the ARM micorcontroller in the question "FRDM-KL25Z " have the ability to generate different output voltage?

 

[Bluejets]

You already have your answer from #2.

 

[BobK]

You do not control a motor with varying voltage and a micro cannot output enough power to run a motor directly.

Look up "PWM". Look up "motor driver".

Bob