Stampede LED dart counter with sound.

I'm working on a video and standard guide for this mod.  Parts used are ~$23.

So we ran a full game of HvZ and believe we found most of the problems you'll encounter, and I also updated the counter to use an interrupt based system instead of a poll, which gives the ability to use time delayed sound events which are very helpful. 

Here's another preview, check out the sound, it's the best part.