A Dual Channel board for PWM fan control. Supports two fans from a single DC supply. Designed for a 3D printer but should be usable for other applications too. Choose suitable N-Channel Mosfets with a TO-252 footprint. R2 and R4 are current limiting resistors for the LEDs (D1 & D3) so again choose according your specs (SMD 1206 footprint). R1 and R3 are pull-down resistors - chose values based on your signal voltage and the mosfet’s gate voltage specification. D2 & D4 are to prevent back-emf from the fan motors and I recommend using 1N4007 for this. The fan connections on board are designed for JST XH and the signal connections are JST PH. The DC in is for a 5mm pitch 2 pin screw block.

I am now using this board and it is working. You just need to chose the right components for your application.