i have a project that i want to do, i need to find the stuff. 10mm grb led what kind of resistor would i need? where can i find a slip contact? how can you make a speed control for 2 dc motors. what kind of elctricity supply would i need?http://www.youtube.com/watch?v=GBroJGlGR6Y&feature=related ill add a link to what i would like it to look like.