Homemade timer for fireworks

[displayfireworks1]

Of course we have more sophisticated ways of accomplishing this sort of thing , but I thought this was a cool homemade device. Around 3:29 into the video he shows the details.

http://www.youtube.com/watch?v=s6eR_cZt1Mc

[nrubmx]

wow that's cool. can it shoot a bunch of things off like 5 seconds apart from eachother or just one?