/diy/ - Do It Yourself

Anonymous Sun Apr 19 13:35:57 2015 No.801040 [View]
File: 97 KB, 810x954, mosfet.jpg [View same] [iqdb] [saucenao] [google]

Yo.

I'm trying to control a simple 3-pin computer fan using PWM on arduino and a N-MOSFET. I know it can be easily controlled using potentiometer without Arduino or PWM, but I would like to control it remotely.

It kinda works, but if I do analogWrite(0), which means always off, it picks up the pace and rotates faster. analogWrite(255) which is always on, slows down the fan, but doesn't stop.

What am I doing wrong? Why can't I stop the fan completely using PWM and why is analogWrite vice-versa?

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/diy/ - Do It Yourself

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