This is the Sharp GP2D12 IR detector with 3 wires that plug into the detector. For wiring the detector follow this link.
This ATR robot uses custom length sides and 10 inch traction lug tires. We have included everything to make it ready to run including batteries, controllers, chargers, etc.
SparkFun's minimal design approach to Arduino. This is a 5V Arduino running the 16MHz bootloader.