How to control my 12V Fan with my raspberry?

Hi, I'm fairly new to the "electronic" world, and I recently bought a Raspberry Pi, I made a perspex case for it, and I still had a 12V fan laying around.

So my question is now, how can I manually control the fan speed with my raspberry? and since it's 12V, be safe from frying my raspberry.

If anyone would be able to help me with this, I'd be very grateful!

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bprewit over 12 years ago

If all you want to do is turn the fan on and off the circuit below should work. I don't see any reason why it wouldn't work for PWM as well, but I haven't tried it.
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Former Member over 12 years ago in reply to bprewit

Also what kind program should I use, is there already one written, or should I figure it out myself?

and what does the `M` stand for?
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Former Member over 12 years ago in reply to bprewit

Also what kind program should I use, is there already one written, or should I figure it out myself?

and what does the `M` stand for?
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