Build-It-Yourself inspires kids to build their own toys, robots, puppets and other inventions.

	IR Controller: If you want to send more than 3 controlling signals, this design will allow you to select and detect 4 colors with a color wheel and light sensor attached to input port 1. Select a color and then press a switch on input port 2 to send an IR signal associated with that color. This design uses the time a switch on input port 3 is pressed to create 2 additional states. If switch 3 is pressed less than .5 seconds a 20 IR signal is sent. If switch is pressed more than .5 seconds a 22 IR signal is sent. Click on Robolab Program to see the code for this controller.
	Lift and Push Strategy: Modify the Roll Fwd/Bkwd/Rt/Lt Chassis. Replace 1 center steering wheel with 2 front right and left steering wheels. Make the chassis wider to accommodate 2 RCX's. Make the chassis longer to accommodate an extended Spin Sideways horizontal gear train. If each RCX controls a wheel motor, there will be more current to power each motor. This also add valuable weight to the robot. Build a plow that lifts opposing robots driven by the extended Spin Sideways gear train.
	Swing and Smash Strategy: This robot swings a 2-foot arm back an forth gradually pushing anything in its path outward. A motor directing driving a wheel at the end of the arm creates a pretty hefty momentum punch. You need to lower the arm from the starting position. Use a Spin Sideways horizontal gear train to unwind a string tied to the end of the arm to lower it.
	Keep It Simple Defensive Strategy: Build a series of ramps that on hinges that unfold when a motor spins an arm. The ramps should make it hard for competitors to lift this robot or find a good place to push it. Swing the arm every 15 seconds just to show the judges you're alive while the others fizzle out their batteries. You will at least win 1 point per match for a tie or 3 points if your opponent breaks down. This strategy is simple to program and has few moving parts that could break.