I have a big box of scrapped GOOD computer fans, pulled from old servers and workstations I collected over the years. MOST ALL of them are 3-wire, red-yellow-black, and labeled "BRUSHLESS 12V" on the stickers. Normally for something so simple, I hook up red & black DC voltage and MAYBE a SWITCH, then be DONE with this - but unfortunately, it's not the case with these complicated BRUSHLESS motor fans.
I tried to scan around eBay for a driver board, something I could use - but got lost, and it keeps kicking back drivers for R/C copters, cars and whatever else. I do not want to buy a $15 ESC, then PWM it with an arduino just so I can re-use these simple NICE fans.
Does anyone here know WHAT I need to search for or have a link or something to help me please? I just want to buy a little cheap circuit board to drive these fans, I am sure they must exist somewhere but I am struggling to find them.