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A new sentry gun project

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Unread postAuthor: POLAND_SPUD » Wed Nov 21, 2012 1:11 am

I got a bunch of step motors, drivers, arduino and I can probably code it once I find a formula and understand how to implement it
so yeah I might experiment with it

can we expect a Polish bodged together version of this anytime soon
yeah that's pretty much what I want - just choose azimut and elevation and then fire the gun
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Unread postAuthor: jackssmirkingrevenge » Wed Nov 21, 2012 1:17 am

Autoloading?

since the projectiles are just rolling down the barrel, should be a doddle to have a feed mechanism controlled by a single servo.
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Unread postAuthor: POLAND_SPUD » Wed Nov 21, 2012 1:35 am

Autoloading?
yeah thought about it too
place a loading mechanism next to the gun and tell the barrel to move to a specific position where it can be loaded

edit
I've just read tons of stuff on trigonometry, inverse & forward kinematics and sh## and I still don't know what formula I need.... but I feel like my mind is about to explode
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Unread postAuthor: jackssmirkingrevenge » Thu Nov 22, 2012 8:34 am

[youtube]http://www.youtube.com/watch?v=BlEFVOavvUM[/youtube]

Hmmm...
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Unread postAuthor: POLAND_SPUD » Thu Nov 22, 2012 10:20 am

uhmm what is this ??
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Unread postAuthor: jackssmirkingrevenge » Thu Nov 22, 2012 10:32 am

Apparently you "tag" a target in the electronic scope, check that you're happy with it, then the next time you put the crosshairs on target the rifle fires automatically.

This is what facebook needs to be fun :D
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Unread postAuthor: POLAND_SPUD » Thu Nov 22, 2012 1:28 pm

yup electronics is sure awesome - some sensors and coding and you've got a machine that does wonders...

ohh BTW I really like this app> https://play.google.com/store/apps/deta ... yway&hl=pl
awesome stuff if you ask me

ohh and I wish I had paid more attention during my maths lessons - coding DOES rely heavily on maths

EDIT
just had an idea how to solve this mortar issue without knowing the exact formula (sorry I just can't wrap my mind around it - sure hope that's the right expression)

so the idea is as follows - model the entire setup in processing in 3d using real dimensions then use dist function to get distance between both step motors and the barrel bracket... lol this does seem like a retarded solution but at least my feeble mind can, more or less, comprehend this
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