Subject:
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Re: Ogre - a LEGO NXT based "tank"
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Newsgroups:
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lugnet.robotics
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Date:
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Mon, 2 Mar 2009 19:17:45 GMT
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Viewed:
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11564 times
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In lugnet.robotics, Brian Davis wrote:
> OK, it was pointed out to me that I hadn't actually announced this on LUGNET,
> so... Ogre is the logical (or perhaps I should say "obsessive") conclusion to a
> series of Zamor shooting robots I've played with for a while. The launching
> system fires about 9+ spheres per second at about 4 m/s, and the ammo magazine
> holds about 50 spheres (without jamming too often). I started out trying to hold
> off using NXT motors (at first I wanted a pan and tilt turret, but ended up with
> a fixed main battery), so I used PF motors. This has the nice side benefit of
> making the tank "automatically" and RC vehicle; just don't turn the NXT on, and
> the entire thing works very well under RC control from two stock PF remotes
> (mated side-to-side, with one upside down; the inverted one you pull back on a
> toggle to fire, while the upright one controls the two treads). The upper bogies
> in the treads are sprung with shocks to keep the large tread systems under a
> fairly constant tension, and as a bonus it has a little mini "spy cam" on one
> side.
>
> The NXT can control the unit fairly well - actually, better than I can with the
> remote. By using the Hitechnic IRLink, the NXT control can use PWM on the PF
> motors, resulting in much smoother control for turns and variable speeds. In
> contrast, a human behind the controls tends to look jerky and inexperienced. It
> is a lot of fun just to play around (we'll be finding Zamor spheres in the
> living room for the next decade I suspect), but it's wonderful to watch it "Take
> out" at target autonomously. No BS Gallery as yet, but here's a YT video:
>
> http://www.youtube.com/watch?v=DNHGaSagaM4
>
> Yes, LEGO doesn't make tanks. But thank goodness all the pieces are there for
> the rest of us. Stormtroopers, beware!
Now, that's just flat out cool...and fun!!! (except for maybe...the cats.)
I'm curious if soccer/foot balls and basketballs can work in place of Zamor
spheres.
Scott
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Message has 1 Reply:
 | | Re: Ogre - a LEGO NXT based "tank"
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| (...) Thank you - and don't worry about the cats, they think LEGO robots roaming around the house are normal. All depends on the environment that you are raised in... (...) They don't. The launcher works be squeezing the sides of the spheres as they (...) (16 years ago, 3-Mar-09, to lugnet.robotics)
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Message is in Reply To:
| | Ogre - a LEGO NXT based "tank"
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| OK, it was pointed out to me that I hadn't actually announced this on LUGNET, so... Ogre is the logical (or perhaps I should say "obsessive") conclusion to a series of Zamor shooting robots I've played with for a while. The launching system fires (...) (16 years ago, 2-Mar-09, to lugnet.robotics) !!
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