Practical question about circuits and stuff. :D Maybe this is the wrong forum.. but I'm trying to do something... (Might be silly, but oh well..) I have this dance dance revolution (DDR) pad-- for those of you who don't know, it's that arcade game which everyone plays at arcades and stuff-- for the playstation... I want to use it on a PC... but I can't afford buying a USB->PSX convertor (Shipping prices to Kuwait are pretty high :() So... I thought of something... buying a USB keyboard, opening it up, and making a parallel circuit such that when I press one of the arrows on the DDR pad that it "maps" to a key on the keyboard-- i.e. I'd solder one wire onto one side of the key I want to map the arrow to on the keyboard, and another one on the other side, and those would be soldered "accordingly" onto the DDR pad-- however it works.. Now, I opened up the DDR pad to see this: http://www.brokendream.net/xh4/padpics The pics are: 1.JPG -> the bottom side of the pad....... (opened up-- circuit) 2.JPG -> Me pulling that bottom-side circuit up to show the soft stuff which, has under it, the top-side circuit which the pad itself comes in contact with.. 3.JPG -> The pad itself-- for those interested. 4.JPG -> Me showing the top side of the bottom circuit... I'm guessing the top circuit behind the soft stuff is pressed down and somehow "completes" the circuit so that the button is pressed? But I'm really not sure... I'm now utterly confused and would like to know if someone can give me some pointers on a possible way to set this up so that I can press a button that would be "mapped" to a key on a keyboard the way I explained above.... I'm sorry if this is in the wrong forum, but I thought electronic engineers would have a very strong foundation in these commercial products and might be able to help me out with this... (And might be able to explain to me how these work :) ) I hope someone can help me out... THANKS for any replies!