Infinite Piston Track

Comes in 10 colours and Iron! (For more colours replace blocks with Sethblings random blocks MCEdit filter)

This device is 4L x 11W x 4H and is a fast, tileable track which moves pistons.

It will send the signal down the track and to the previous module at the same time, so you can keep adding pistons onto the track and they start travelling as soon as they're set up correctly. You need a normal piston facing up the track and a sticky piston in front, facing backwards (So the pistons are facing eachother), like below.

Normal> <Sticky
TrackTrackTrack>

One use I have planned for this is to set off a sequence of BUD switches which will open doors, but with enough time for someone to get through the doors unlike a redstone signal would provide.