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Ordering Materials
Quick question: how is the wireless bridge hooked up to the new RoboRIO? What kind of cable do we need? Also, are Weidmüller connectors needed for connections to the PCP? I heard this somewhere, but I am not sure if it is true or not. Thanks!
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Re: Ordering Materials
Based on the image of the new control system the wireless bridge will be connected via USB. I imagine that the cable will be provided in the KOP
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That would make sense. However, I do not think my team is choosing to receive the KOP this year. Hmmmmm.
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The DLink, Rev B will be connected via the roboRIO Ethernet port.
Pretty much the same way it got connected on the older control system. So you just need an Ethernet cable. Power will come via the Voltage Regulator Module "5v/2a" Weidmüller connections. That sample wiring diagram on the FRC Blog is out of date. Quote:
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Awesome. Thank you! Haha whoopsies... Typo: PDP. And that makes more sense about the KOP:) I was unsure of what was included in the portion given to all teams!
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The PDP has two different connections on it. For the traditional 40/30/20 Amp breakers, it uses the same connectors as we have previously.
For the Rio, and your first VRM & PCM, you use the Weidmüller connectors. The Weidmüller take bare copper and do not require anything to be crimped to it. That said, I recommend tinning the wires to prevent them from getting "mashed" after repeated insertions/removals. |
Re: Ordering Materials
EB,
The Weidmuller connectors are designed for wire or ferrule termination. It is not mandatory for the ferrules but they might make termination easier in a tight robot. Get very good at twisting the wire and inserting it on the first try. I suggest teams practice outside of the robot. 'No whiskers' should be your watchwords. |
Re: Ordering Materials
I'd never used ferrules before, but after trouble inserting wires into the new PCM (particularly for the larger compressor wires) I ordered a kit from ferrulesdirect.com. Well worth it, much easier to work with and I'd guess more reliable too. If your team can afford it I'd recommend purchasing a crimping tool and ferrules.
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Adam,
I don't have the Weidmuller part number but I wouldn't use anything else. Get the right crimper as well. |
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Having not seen the new control system can someone recommend a length for posts on the Weidmuller wire ferrules?
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Ferrules avoid all this. Another benefit is that with plastic collar ferrules it's easy to verify visually that all the wires have been inserted to the correct depth. |
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Re: Ordering Materials
Al,
Given we all get $30 to spend at Inventables what are your thoughts on these ferrules and associated crimper for use with the new control system Weidmuller connectors? |
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