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-   -   pic: Team 1504 minibot final (http://www.chiefdelphi.com/forums/showthread.php?t=91145)

R3P0 07-02-2011 12:50

pic: Team 1504 minibot final
 

Navid Shafa 07-02-2011 12:51

Re: pic: Team 1504 minibot final
 
How does this latch onto the tower? It appears as if the wheel shafts/positions are fixed...

nikeairmancurry 07-02-2011 12:53

Re: pic: Team 1504 minibot final
 
Also confused... Little explantion?

TD78 07-02-2011 12:58

Re: pic: Team 1504 minibot final
 
My guess is magnets.

Domtech 07-02-2011 13:03

Re: pic: Team 1504 minibot final
 
Ah. It appears to be magnet based. It kind of resembles one of our prototypes. :D

viperred396 07-02-2011 13:52

Re: pic: Team 1504 minibot final
 
I like it alot.. whats that speed on it to the top?

BJT 07-02-2011 13:59

Re: pic: Team 1504 minibot final
 
cool, exactly what I was planning on building this week

ChuckDickerson 07-02-2011 16:52

Re: pic: Team 1504 minibot final
 
What kind of switch is that little red/blue one on the left end? Is that a Tetrix switch or a common household light switch?

PAR_WIG1350 07-02-2011 23:43

Re: pic: Team 1504 minibot final
 
It looks like a limit switch to me.

R3P0 08-02-2011 08:01

Re: pic: Team 1504 minibot final
 
Quote:

Originally Posted by DeepWater (Post 1017784)
What kind of switch is that little red/blue one on the left end? Is that a Tetrix switch or a common household light switch?

I just grabbed a bunch of switches at radio shack. Not part of the minibot.

It uses two neodymium magnets. They are still testing so I doin't know what the speeds are.

Bruceb 08-02-2011 09:58

Re: pic: Team 1504 minibot final
 
How big are the magnets and where did you get them?
Bruce

R3P0 08-02-2011 10:03

Re: pic: Team 1504 minibot final
 
Quote:

Originally Posted by Bruceb (Post 1018342)
How big are the magnets and where did you get them?
Bruce

Not sure if he used the ones I got from Harbor Freight. There is a section around the watch tools in Harbor Freight that has ceramic magnets and 100-250# magnets. They may have used these or purchased neodymium mags somewhere else. I have a note into the mentor for he minibot to come over here and give us an answer.

eedoga 08-02-2011 11:16

Re: pic: Team 1504 minibot final
 
www.allelectronics.com has a pretty good assortment of neodymium magnets.

Edoga

froutson 08-02-2011 11:20

Re: pic: Team 1504 minibot final
 
I found some magnets that we are going to try from McMaster-Carr.
Ultra-High-Pull Neodymium Ring Magnet 1" OD, 1/2" ID, 1/2" Thick, 21.4 Pull lbs. Part # 3360K79
My thought is to add a small bearing in the center and mount it so that it allows the minibot to travel in the vertical plane without falling away from the pole.

ROBOTS! 08-02-2011 19:08

Re: pic: Team 1504 minibot final
 
Quote:

Originally Posted by R3P0 (Post 1018344)
Not sure if he used the ones I got from Harbor Freight. There is a section around the watch tools in Harbor Freight that has ceramic magnets and 100-250# magnets. They may have used these or purchased neodymium mags somewhere else. I have a note into the mentor for he minibot to come over here and give us an answer.

There is one magnet in the middle of the mini bot. It is a 52 lb pull neodymium from applied magnets. I got some smaller 27 lb pull ones too, but I threw the 52 ones into the cad mock up so they got used. One word of caution when using these magnets, BE CAREFUL! they are a pain to get apart with no spacers in and can easily draw blood(i know from experience). You shouldn't need anything stronger then a 52 lb pull magnet. We probably could of gotten away with using the 27 on our mini bot.

GaryVoshol 08-02-2011 19:14

Re: pic: Team 1504 minibot final
 
Quote:

Originally Posted by froutson (Post 1018394)
My thought is to add a small bearing in the center and mount it so that it allows the minibot to travel in the vertical plane without falling away from the pole.

What'cha gonna make your bearing out of? Something in the list in <R92> I hope.


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