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#1
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removable controls mofule
Hi everyone. ... ooops can't spell module
SPAM is designing a removable electronics and control box this year. ...first time we've done it. The interface to the box would be speed controller/relay/solenoid output wiring to motors, compressor etc. and sensor signal input wiring. We're looking for ideas for COTS connectors at the interface. Some CD scrounging has revealed AMP Universal MATE-N-LOK connectors for the 12V low power connectors (10 & 4 pins) and Molex Mini-Fit for the high power connector (8-pin). Ribbon cable seems like a good choice for the signal. I know there are teams out there who have tackled this in the past. Any wisdom? Thanks Eric Last edited by EricS-Team180 : 14-01-2009 at 12:32. Reason: <bad spelling!> |
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#2
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Re: removable controls mofule
These connectors are great. we have not used them in robotics but outdoor landscape lighting my dad does uses them in the demo kit. very easy to use
http://www.powerwerx.com/product.asp...017&CtgID=3578 ...Forest |
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#3
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Re: removable controls mofule
It sounds like you already have some good ideas
Whatever you decide to use, make sure to check it against section 8.3.6 Power Distribution in the rulebook. Pay special attention to the following:Quote:
Quote:
Other than that, i can't find any place in the manual that expressly prohibits the use of intermediary connectors for other wiring. Any connectors you do use should be rated appropriately for the maximum load they can provide, and it would be a good idea to keep data sheets for those connectors on hand in case the inspectors question their rating or safety (which is unlikely if you used the proper connectors). In the past, our team hasn't used any off the shelf cables for the robot, other than those required to use (programming, tether, radio serial cables in past years, ethernet this year). In the past, we've used braided wire sleeving, which is readily available in many diameters and allows you to construct your own organized cables from your own wire. |
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#4
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Re: removable controls mofule
We're considering doing this too. I think it might be wise to leave the screw connections for the motor side of the speed controllers, and have the battery connector, power switch (main breaker), and power panel mounted to the removeable module.
If you want to have disconnects for the motors, there are smaller Anderson connectors, also look into what the R/C folks use for quick disconnects for batteries for electric cars, which have to handle current loads similar to the motors we use. |
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#5
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Re: removable controls mofule
Anderson Power Products makes smaller versions of the Battery connector. They are available in 35 and 45 amp versions and are available at Powerex and West Mountain Radio. The individual insulated bodies can be interlocked to form multipin connectors and they allow for polarity mating. They even come in a variety of colors. I recommend these and the purchase of a crimp tool. (West Mountain) The crimp is sturdy but we add a little solder to be sure of a low resistance contact. You can also use these for control wiring although the crimp tool won't do smaller wire, soldering is effective. McMaster-Carr also sold these but from a different manufacturer. Similar but not as good.
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#6
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Re: removable controls mofule
Thanks for all the good ideas! ...gotta love the forums
Eric |
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#7
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Re: removable controls mofule
Great idea, since you can keep it this year and not ship it with bot.
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#8
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Re: removable controls mofule
Abso-freakin-lutely !
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#9
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Re: removable controls mofule
Some of the students are talking about building a second robot for pre regional practice...I'm more interested in seeing if we can build the first one, first!
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#10
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Re: removable controls mofule
Check with Team 118 from JSC, I know they have done this before with great success, good luck
mike d |
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