tl;dr: If I use a 12v external power supply on my Arty-S7-50RevE can I use VIN (& GND) to power a 0.1A, 12v cpu fan?
Longer: I'm having heat issues with my soft CPU on the S7 and so want to cool it before I take it multi-core. I've installed a heatsink (from here http://uk.farnell.com/fischer-elektronik/ick-s-14-x-14-x-10/led-heatsink-with-pins-square/dp/1850054).
I've got a nice CPU fan left over from another project which fits my arty project well. However the fan is 12v.
But I'm already powering the board with a external coaxial 5A 12v supply. Looking at the manual you ca