my welding project (update!)

Happy new year!

Remember back in the summer when I posted a lot of questions about welding up a frame for a halloween prop? Well, here are a few pics of what was accomplished by the time halloween rolled around. I did all of this with a $100 AC buzz box and a lot of cursing. Santa just delivered a Thermalarc

185TSW and a turnpro 7x12 bandsaw, so maybe there will be a little less cursing eventually. (Santa, you forgot the damn argon bottle!).

Anyway, here are the pics:

It is a fully automated 2 seater halloween ride we built to run in our garage (rather large garage). This past year it worked, but we didn't have much time (read like 1 day) for decorating. NEXT year though...

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In this pic you can see an unwired but fully welded base (notice how black paint makes everyone a good welder):

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A little more wiring:

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Top swivel plate mounted (yes, the top section with the passengers can rotate independently of the base, so you can be traveling foward while viewing sideways, or even rotate your view as you move along the path.)

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And here is a very short video of me looking very dorky riding in the doombuggy. The method of linefollowing (5 sensors on a UHMW plastic pad mounted to a small linear slide that rides along the ground and registers the black line on white) will be changed this year to machine vision using a video camera.

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I am sure I will have many many questions about my 185TSW. Thanks for all your tips last year during my buzz box woes.

Rick

Reply to
Rick
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Very cool project!

But, your video sucks! :)

Did you do the electronics yourself? I would like to put an automated targeting system on the new paintball tank that I'm building, but it's way beyond my capabilities. Basically it would auto adjust the elevation of my main gun to compensate for range. Any chance you'd like to help out with that part?

Reply to
Dave Lyon

Neat!

What did you use for motors?

Reply to
Don Foreman

Thanks!

Yes, I built the electronics myself. My wife did all of the programming and set the system up with a manual control system application that operates over 802.11 wireless.

Hmmm, auto targetting paintball..been there, done that :-)

I worked for 5 years at Newton Research Labs where we developed a "shootback" system for police training which consisted of a machine gun firing nylon paintball size balls at 10 per second out of a cannon that could autotrack police officers in a large training room while they were watching a video. For example, when a bad guy on the video fired a gun at the police officer in training, the auto cannon would also fire one of these nylon balls at him. Oy! did they hurt too! Left a nice red whelp. A friend of mine developed the pan tilt and the rapid fire gun, and I worked on the electronic servo system. We did an impressive demonstration where we shot holes in a large piece of cardboard 20 feet or so away spelling out Newton in about 20 seconds :-)

Ah, fond memories...

Certainly I can offer you tips/suggestions.

Rick

Reply to
Rick

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Reply to
Rick

How will you determine range? What sort of sensor will you use to determine gun elevation angle?

Would you use a laptop computer, or a microcontroller or microcontrollers? I see that Rick used a laptop.

I'm gearing up to work with PIC and Atmel AVR microcontrollers, but I have a ways to go yet before I'll claim any capability with them. I'm retired, just doing it for the hell of it -- as for projects like this and simpler projects.

Part of that involves learning to program in C to do things involving math and trig -- like gun angles and autonomous navigation. I'm still just getting started with that.

Reply to
Don Foreman

Wow - now that is what I call learn by doing!

Good job! Meek and mild 'battle' bot!

Martin Martin Eastburn @ home at Lions' Lair with our computer lionslair at consolidated dot net NRA LOH & Endowment Member NRA Second Amendment Task Force Charter Founder

Rick wrote:

Reply to
Martin H. Eastburn

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