I'm trying to dim a 10w LED via Arduino PWM.
This is the LED that I have: http://www.banggood.com/10W-Warm-Pure-White-High-Brightest-Save-Power-LED-Light-Lamp-p-88169.html
Without knowing much about this stuff, I bought this (namely because it had LED, DIM, and PWM in its name): http://www.ebay.com.au/itm/121437119430?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
I can't get the eBay dimmer to work for love or money. When I connect it to ground directly on the battery terminal, it goes off, which means the dimmer circuit is working. I don't even know where to start with MOSFET dimming solution, but I think that the IRFZ44N MOSFETs are the wrong ones because they won't turn on with 5v power (they need 10v or something, but those are the ones I have on hand).
I can't seem to find any good guides on how to do this after stacks of googling, and to be honest, I don't even know if those LED's can be dimmed in the first place.
What do I need to make this happen?