Introduction
Team HORSE POWER’s ME 333 project was to build
a horse racing game where players compete against each other to get
his/her horse to the finish line first. The game challenges the player
to shoot a target on the horse with a laser pointer; success in hitting
the target causes the horse to run faster, while missing the target
causes the horse to run slower.

A drawing of the horse racing
game
The horse racing game features the following:
- Start
- The horses are lined up at the starting line, getting
reading for the race. A pair of IR beam-breaking sensors is used to
make sure that the horses are at the correct position. Once the players
are ready, a control button is pressed to start the game.
- Race
- The target on the horse is a photodiode that detects
light from the laser pointer. The signal received by the photodiode is
transmitted by a radio frequency transmitter, also mounted on the
horse, to a radio frequency receiver, and then to the computer. The
computer processes the input signal using a program, and sends output
signal to a motor that control the speed of the horse.
- End
- At the finish line, another pair of IR beam-breaking
sensors is used to detect the winner and end the race. There is also an
LED display that announces the winner. Then, the control button is
pressed again to retract the horses to starting line for the next game

A diagram describing the horse
racing game system
_______________________________________________________________________________________________________________
Team HORSE POWER:

From left:
Zeke Nelson—junior mechanical
engineering major
Asaf Elani—junior electrical
engineering major
Yee Chin Heng—senior
mechanical engineering major