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Unread 07-02-2017, 11:58
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Mark McLeod Mark McLeod is offline
Just Itinerant
AKA: Hey dad...Father...MARK
FRC #0358 (Robotic Eagles)
Team Role: Engineer
 
Join Date: Mar 2003
Rookie Year: 2002
Location: Hauppauge, Long Island, NY
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Re: pic: Power Over Ethernet for 2017

Quote:
Originally Posted by otherguy View Post
With the previously linked cables, you're reducing the wires that need to run across the robot, but you have increased the number of failure points as there are two additional RJ45 plugs and one additional barrel jack connection. So reliability has actually gone down.
I don't quite follow this logic.
My power injector uses three connections:
1) roborio RJ45
2) radio RJ45
3) direct wired into VRM after cutting the barrel connector off

And an additional Ethernet cable is required from the passive POE injector to the radio.
So, four connections altogether.

Rob's solution has three total connections (and a few more user modifications).

Your solution appears to require one additional Ethernet cable adding RJ45 failure points over and above those others even after you've bypassed the power barrel connector (the user modification is also another potential failure point).
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Last edited by Mark McLeod : 07-02-2017 at 12:32.
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