A device I made to make dance floors for clubs and such. I only made one row for this post, but you can add more if you decide to use it. Id say that the hardest part of this was making the repeat work, I kept having a problem of them activating at the same time. The solution to this was using a modified timer (I didn't do much, just add another redstone repeater) If you want to know how to make a timer, I will post it tomorrow.