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Unread 15-06-2016, 22:39
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sparkE
AKA: James
FRC #2168 (The Aluminum Falcons)
Team Role: Mentor
 
Join Date: Feb 2010
Rookie Year: 2009
Location: CT
Posts: 429
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I'm personally not a big fan of JST connectors for items that need to be plugged in/out with any frequency. I find the pins to be easily damaged if you try to seat a connector that's not properly aligned. As a result they are nearly impossible to plug in to a sensor that's buried in the robot. The Sharp IR sensors have this style connector on them, and we always terminate an adapter cable to 0.1" header pins in the event something needs to be swapped out between matches.

For a low conductor count cable (like PWM you mention) what would be the advantages of a JST connection? The only thing I can think of is that it's keyed, can't see there being appreciable space savings on a 3 pin cable.

For the XT and Deans connectors, I don't have much experience with them myself, but i know they are the standard I'm the hobby RC market. I'm open to their use. Instructions on how to connect to them correctly, tools required, what gauge cable, sources for tested wire & tools, tips/tricks would probably be helpful for most teams as I'm not sure I've ever seen one on an FRC robot in the past 8 years. Maybe I'm not looking hard enough.

I'm a fan of male/female spade terminals. They're cheap and reliable when crimped correctly. We usually mount little right angle male spade adapters on all motor controllers with screw terminals so that they can be swapped out quickly.

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