I want to build something that works like this:
*There's a large flat force sensor connected to a small LED timer.
*The timer is connected to a small but strong vibrating unit. The timer can be set to any amount of time I want from 1 to whatever.
*When the timer reaches zero, the vibrating unit activates.
Is the same as 'A', except this one connects to a computer via USB.
What parts do I need to do this project? A complete item list down to the necessary working materials in order construct it would be most helpful and appreciated