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madoverlord:robots-1hrant [2016/05/14 16:18]
madoverlord
madoverlord:robots-1hrant [2016/10/04 14:42]
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-==== 1-hour Antweights (Robots) ==== 
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-<​html><​a href="​http://​media.madoverlord.com/​Lg/​DSC015/​DSC01511.JPG"​ target="​_blank"><​img src="​http:/​wiki.animeigo.com/​MO/​Sm/​DSC015/​DSC01511.jpg"></​a></​html>​ 
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-I figured it would be a good idea to build a couple of 1 pound "​antweight"​ robots for James and Alex 
-to play with.  But with all the other robot work to do before Battle on the Beach, 
-I didn't have much time.  Fortunately,​ at Xmas I had gotten them a couple of 
-Battle Bloks RC lego-compatible robot kits ($30 at Toys-R-US), which are just 
-perfect for making simple antweights. 
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-<​html><​a href="​http://​media.madoverlord.com/​Lg/​DSC015/​DSC01512.JPG"​ target="​_blank"><​img src="​http:/​wiki.animeigo.com/​MO/​Sm/​DSC015/​DSC01512.jpg"></​a></​html>​ 
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-These are  great little 
-robot modules that can be set to work on one of two frequencies,​ 27.145 or 27.045 mhz. 
-The little bubble on the top has caps that click into it that both turn on the robot 
-and select the frequency. 
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-<​html><​a href="​http://​media.madoverlord.com/​Lg/​DSC015/​DSC01513.JPG"​ target="​_blank"><​img src="​http:/​wiki.animeigo.com/​MO/​Sm/​DSC015/​DSC01513.jpg"></​a></​html>​ 
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-Remove 10 screws (2 hidden in the 
-battery compartment) and you've got a basic drive train. ​ If you're doing extensive 
-modifications,​ you probably want to detach the antenna wire and mount it somewhere 
-else. 
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-<​html><​a href="​http://​media.madoverlord.com/​Lg/​DSC015/​DSC01514.JPG"​ target="​_blank"><​img src="​http:/​wiki.animeigo.com/​MO/​Sm/​DSC015/​DSC01514.jpg"></​a></​html>​ 
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-Step one is to remove the little 
-grey nubbins on the frequency and power switches. ​ The plastic cap isn't robust enough 
-for robot combat, but there'​s an easy fix.  Note the crystals say 26.590 and 26.690 mhz, 
-contradicting the documentation. ​ No idea which frequency is correct! 
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-<​html><​a href="​http://​media.madoverlord.com/​Lg/​DSC015/​DSC01515.JPG"​ target="​_blank"><​img src="​http:/​wiki.animeigo.com/​MO/​Sm/​DSC015/​DSC01515.jpg"></​a></​html>​ 
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-Next, tap the two holes on 
-the case using a 6-32 tap.  This lets you use some 6-32 screws (you'​ll need some 1/2" 
-ones) as power and frequency switches, just like the team whyachi switches, but a 
-lot cheaper (grin)! 
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-<​html><​a href="​http://​media.madoverlord.com/​Lg/​DSC015/​DSC01516.JPG"​ target="​_blank"><​img src="​http:/​wiki.animeigo.com/​MO/​Sm/​DSC015/​DSC01516.jpg"></​a><​a href="​http://​media.madoverlord.com/​Lg/​DSC015/​DSC01517.JPG"​ target="​_blank"><​img src="​http:/​wiki.animeigo.com/​MO/​Sm/​DSC015/​DSC01517.jpg"></​a></​html>​ 
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-Decide on how you're going to 
-mount your weapon. ​ The lego connectors are spaced 8mm center to center, and a 7/64" 
-drill goes down into them nicely (and can be tapped with the 6-32 tap).  Even the 
-regular connectors have a little dimple that will center the drill. ​ I happened to 
-have some hinges that had 24mm centers on them, so I used them as mounts. ​ I reinforced 
-the mount with a little epoxy. 
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-<​html><​a href="​http://​media.madoverlord.com/​Lg/​DSC015/​DSC01518.JPG"​ target="​_blank"><​img src="​http:/​wiki.animeigo.com/​MO/​Sm/​DSC015/​DSC01518.jpg"></​a></​html>​ 
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-The secret to getting the 
-weight of the robot under 1 pound is in the batteries. ​ Non-rechargeable lithium 
-batteries weigh almost nothing, much less than any other option. ​ A bit expensive, 
-but they last a long time, a set ought to easily last for several competitions. 
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-<​html><​a href="​http://​media.madoverlord.com/​Lg/​DSC015/​DSC01519.JPG"​ target="​_blank"><​img src="​http:/​wiki.animeigo.com/​MO/​Sm/​DSC015/​DSC01519.jpg"></​a><​a href="​http://​media.madoverlord.com/​Lg/​DSC015/​DSC01520.JPG"​ target="​_blank"><​img src="​http:/​wiki.animeigo.com/​MO/​Sm/​DSC015/​DSC01520.jpg"></​a><​a href="​http://​media.madoverlord.com/​Lg/​DSC015/​DSC01521.JPG"​ target="​_blank"><​img src="​http:/​wiki.animeigo.com/​MO/​Sm/​DSC015/​DSC01521.jpg"></​a></​html>​ 
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-And here we see the 
-finished products. ​ Maybe not the most technically advanced antweights, but I think 
-the kids will have fun with them. 
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