Adjustable voltage regulator with "step up" capabilities

Hello everyone,

New user to the forum. I have a project I am working on where I would like to use a PWM or analog output to control a 12V computer fan speed. I would like to use an RPi or Arduino board as my controller, so unfortunately I am limited to 3.3V or 5V outputs. My question is if there an IC available that will take an input voltage between 0-3.3V and output a scaled voltage between 0-12V (I suspect a 12V input would also be required)?

I see products on the Sparkfun site that allow regulation of voltage and also step up voltage ICs, but I can’t find one that accomplished both.

Any help would be appreciated, thanks!

Hi,

There’s a few ways you could approach this. Here’s some articles to get you started.

https://vvvv.org/forum/how-to-control-c … firmata%29

http://forum.arduino.cc/index.php?topic … #msg136538

https://www.youtube.com/watch?v=Tzn9Rg9jIVQ