H.M.M.W.R. (pronounced hummer) is an acronym for Highly Mobile Multipurpose Wheeled Robot.
I am in the process of building it. When it is completed it will have three wheels. Two
of these will be driven by motors from a Power Wheels, while the other is an unpowered castor.
It will be controlled by a 486 33MHz sub-notebook computer weighing four pounds. It will be
interfaced through the parallel port. It will eventually be able to perform multible tasks
including but not limited to line tracing along with finding and putting out a candle.

As of now I have built the aluminum frame for the robot, built the castor mount, and made the
first H-bridge motor driver circuit. This circuit has not yet been tested. It is transistor
based and uses a regular transistor to turn on two power transistors allowing current to flow
to the motor. I used transistors instead of relays because they're smaller but mainly because
I thought of transistors first and did not need the high ratings of relays. The reason for
the normal transistor controlling the power transistor is because the PC parallel port does
not supply enough power from a logic high to turn a power transistor on.

I hope to soon include pictures of my robot and circuit diagram of the motor driver if it
works. Also check out the Connecticut Robotics Society.