[Blabber] Funny Robotics Rescue Mission with Prize, (OT?)

James Carpino jamescarpino at yahoo.com
Tue Nov 21 03:40:03 UTC 2017


so... it sounds like the way you *want* to solve this is with another RC car + camera + grabber, is that true?
I mean nothing wrong with that... just articulating it.  You need studded or ribbed wheels or something for the brick dust... I guess it's like sand when you hit it.  I have a hunch that if you latched on to your target, you don't need to have overpowering traction, just enough camera action to figure out what you're doing.  If you got behind it, you could push it little by little, so might not need a grabber.  Just don't want another car getting stuck, right?  Is there room to get around?  

I guess a hook might do as well.  Like, if it's aiming down and shaped right, it could latch onto something on the car irreversibly, if you don't want to try a hook.  But that might get you stuck. I'd say make sure you have a long fishing wire on the thing.  or spring wire or any light wire or spring, so you can abort if your battery dies.  Or I guess you could take a chance. 

Also there are these things;
https://www.aliexpress.com/item/7mm-USB-Endoscope-Camera-6LED-Insepction-Borescope-Camera-2M-5M-7M-10M-15M-20M/32677642062.html

I got one and it worked ok.  Mine is only 2m I think; I was just checking it out.  Pretty good for $8.  If you had a long one, with a hook, I wouldn't be surprised if you could do the snake thing.  You'd need something to deflect the snake 110 degrees, a bendy tube.  But uh I'm not your picture for some reason, (feel free to send privately) so I don't know for sure what we are talking about.

By snake, I meant this:https://www.harborfreight.com/50-ft-fish-tape-38156.html... I have one of those, and I've used it.  It can get around a bend if there's something to deflect it.  After that point it's hard to control.  You really have very few degrees of freedom with a thing like that... but oddly, more than one.
James


      From: Isaac (.ike) Levy <ike at blackskyresearch.net>
 To: Hack Manhattan! <blabber at list.hackmanhattan.com> 
 Sent: Monday, November 20, 2017 9:59 PM
 Subject: Re: [Blabber] Funny Robotics Rescue Mission with Prize, (OT?)
   
Thanks Gabe,
Great instinct, but, I've already explored that route and was thwarted by several amazing problems:
- angle from opening to car is, approx 110 degrees after you put your arm in- no way to get more than 1 arm/hand into the opening, (bizarre angles with steel railing blocking)- to reach enough into opening is up to one's armpit before you're clear enough to start fishing- absolutely no way to see in there without camera assist- tape wont do, lots of concrete dust under there (piled 1/8" thick in some spots)- support pillars make it not a straight line for any line/pole/wire fishing type approach
IMHO, this would take some magic blind swordsman kind of action to fish out!
I really think a camera-assisted wheeled vehicle, (even a crude one with 2 wheels) is the way we'll get it out...
Best,.ike



On Nov 20, 2017, at 9:34 PM, gabe at bigapplehobbies.com wrote:

Get one of these kits for $10-20 ($10 at Harbor Freight in Brooklyn) and either hook the car or tape a magnet to the end.
https://m.harborfreight.com/3-16-inch-x-33-ft-fiberglass-wire-running-kit-65326.html?utm_referrer=direct%2Fnot%20provided

Sent from my iPhone
On Nov 20, 2017, at 8:35 PM, Isaac (.ike) Levy <ike at blackskyresearch.net> wrote:



Hi All,
An off topic but fun robot/vehicle problem for this list, with a prize.
Is anyone on list into robotics?
CHALLENGE: A racer has lost a 6" model car under a our floor.  We want to recover the car, (the racer spent a lot of time building it!).
Prize for someone who's got the robotics chops to fish it out: a free car to build and race on the track!
No line of sight to the car, not accessible in a straight line, and no way a human can crawl under.  It's about 30' to this prized competitive race car, from a 12" opening.  The attached photographs were made by sticking my arm through the hole with a camera and flashlight...The car itself is roughly 6" long (1/32 scale), and weighs no more than 170g.
The only way I can imagine we'll fish it out it is with a vehicle driven by wire, and some kind of camera on top to see where we're going, (even crudely).  (A go-pro?  A hacked old smart phone cam?)
A simple could certainly be used to fish the car out.  A 1/10 scale RC car would be about the biggest thing that would fit.
--Contact me if you want to attempt the rescue, and here's more info about our track/racing/maker/art event:
https://mini4wd.nyc/http://www.visionaireworld.com/blog/vis-racing/
Aside from this rescue challenge, folks on this list please feel free to come by!  Use of our Tamiya Mini4wd track installation is free- and car kits are available to build on site.
Best,.ike

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