pic: Team 1504 minibot final

[R3P0]

loading photo ...

[Navid Shafa]

How does this latch onto the tower? It appears as if the wheel shafts/positions are fixed...

[nikeairmancurry]

Also confused... Little explantion?

[TD78]

My guess is magnets.

[Domtech]

Ah. It appears to be magnet based. It kind of resembles one of our prototypes.

[viperred396]

I like it alot.. whats that speed on it to the top?

[BJT]

cool, exactly what I was planning on building this week

[ChuckDickerson]

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]

It looks like a limit switch to me.

[R3P0]

Originally Posted by DeepWater

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]

How big are the magnets and where did you get them?
Bruce

[R3P0]

Originally Posted by Bruceb

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]

www.allelectronics.com has a pretty good assortment of neodymium magnets.

Edoga

[froutson]

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!]

Originally Posted by R3P0

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.