Quantity   Component name
1 × PS2 Controller WYSIWYG: just a plain-jane, old school PS2 controller. Found mine in the thrift store for $5
1 × ATMega48 Microprocessors, Microcontrollers, DSPs / ARM, RISC-Based Microcontrollers
1 × XBee (or whatever radio serial link you have on hand) By far the most expensive part of this system, but I had one from a previous project
1 × 3v LDO Voltage regulator
2 × 1uF Ceramic Caps Required for the specific LDO regulator I am using
1 × 3xAAA Battery Pack
1 × On / Off Switch