The difficulty of this is a bit above average of understanding.
BUT, i will try and make this as easy as possible, so anyone can build it!
This box will be universal, and you can hook up any lighting to it (that uses DC-voltages of max 50V and 15A) and make it flash.
Step 1: What do I need?
A Dremel can be useful but is not necessary.
A soldering device :)
Cablestripper, and anything else you think you need. .. like good music.
1. Transistor. (NPN)
These come in all sizes and shapes, from my large one, to 35 nanometer.
I'm using a slider. One with a knob works just as fine.
3. On-Off switch.
Well, self-explanatory, but it's used to cut power.
4. A box.
To hide it all in and protect with.
To test and party with!
Because you can't get enough of wires.