Connecting a TinkerKit Mosfet directly to an Arduino

The module has some sort of driver for the MOSFET by the look of it so
it should work from a 5V signal, but will need V+ to be 10V or higher I
believe. There seems to be a voltage regulator to supply the gate driver
which is what limits V+ to 24V, the MOSFET is rated to 100V.

Unfortunately the MOSFET itself is a low performance device, you'd be far
better off getting a logic-level MOSFET with a lower on-resistance (0.02 ohms
isn't that hard to come by, the IRF520 on thaat module is 0.27 ohms and will get
very hot with as little as 2A load.