Also allows use a power supply (e.g. 12 - 48 V) directly connected to LEDs but, without current control.
PS. Yes, I know that the pull down is acting as voltage divider but it's no so bad in this case since the voltage on gate could be 4.95 V with an input of 5 V.
With this project you can buy the PCB and build your own board.
http://ferduino.com/wp-content/uploads/ ... Gerber.rar
You can see the gerber files using the Gerbv.
To open the files go to File / Open layer(s) and select the gerber files.
You can buy the PCB from Itead Studio by example.
Other options of wiring:
http://www.ferduino.com/forum/viewtopic ... 1315#p1315
A good video showing how a MOSFET works.
Watch on youtube.com