I was not here for the passion project presentation last Friday. However, I did take part in preparing the presentation. I have thought about our project and I gave out the idea of using redstone system in Minecraft to build hi-tech devices. This is not an easy thing to do so I still need to do lots of research on it. Here are my progress:
(This post can also give some idea to Cole’s Group)

A power component provides power to all or part of a circuit.
e.g. redstone torch, button, lever, redstone block, etc.

A transmission component passes power from one part of the circuit to another.
e.g. redstone dust, redstone repeater, redstone comparator.

A mechanism component affects the environment by moving, producing light, etc.
e.g. piston, redstone lamp, dispenser, etc.