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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.


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