DIY Arduino PWM PC Fan Controller (Part 1) [Prototype] #0000

TL;DR: 6:23 is where I start the demo 7:44 is where I show current draw 9:29 is where I go over the code I built a new PC, and noticed that half of the fans aren't PWM, and were quite loud. LIGHTBULB! I just found yet another excuse for a new project. I