Final Project

In groups of three you will build a piece of hardware that interfaces with the computer. This will require programming, circuit design, PCB creation, and soldering. Each member of the group should be responsible for some of these elements.

We will be using the parallel port. The parallel port allows you to have 8 channels of output. This output can turn on or off motors, lights, LEDs, etc. In the past groups have built things like traffic lights, miniature robots, and model cars.

Your circuits will use transistors to switch power to the components based on the parallel signals. We will use either TIP31C or TIP32C transistors. See the link for pin spacing. TIP31C transistors are NPN while TIP32C transistors are PNP. Edison file to show how to wire each.

You will create a PCB with ExpressPCB. Here is the PCB that is in the Traffic light in the classroom.

Marking: Coming Soon.

©2005 C. Whittington