That's a simplistic solution to the sentry gun idea, seems to me that will work very well for that application. I appreciate the advice. Using the paintball style hopper I could make a scaled down replica of this: http://en.wikipedia.org/wiki/File:Phalanx_CIWS_test_fire_-_081107-N-5416W-003.jpg Than...

Thanks!! I came up with that design so the whole cannon would be more "inline", I don't see how it's any more complicated than some of the other designs here. I was just curious if anyone had every tried a "reed" type valve for this or if it was even feasable in this application. Keep in mind this i...

What's up guys! This is my first time posting but I've been a long time lurker. I've built a few projects from the information in this forum and it's turned in to a lot of fun and now pretty much an obsession. I have been tinkering with an arduino board for making a sentry gun. It tracks motion thro...