quote=“gerthworm, post:20, topic:472207”]
10-lbs tug test
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Im new to this term, can you explain to me please? Im assuming its like a test where you put a lot of effort to the robot…
Thanks for replying!
Sure!
Find an object that weighs about 10 lbs (4.5 kg) and hold it between your thumb and index finger. Get a sense of about how much force you have to use in your arm to hold the object in the air - it shouldn’t be too much, but it’s more than zero.
Then, go to each wire or connection on the robot. Pull on the wire with about that same amount of force. Make sure the wire stays put - it shouldn’t pull out right away.
The theory here - in general, pulling on wires in connectors is bad. They’re not designed to support forces like that. However, they do need to be strong enough to support at least a little bit of force, because that’s what happens when the robot has a collision - the inertia of the wire and the connector will cause things to push and pull on each other.
10 lbs is just a nice number (and “ten pound tug test” sounds nice when said out loud ). The point is simply to tug a little bit on each connector to see if any come loose right away. Every connection should be able to survive a little bit of a tug.
Thats seems to be a great way to test if the wiring is at their spot. Thanks for sharing, im going to tested it out rn.
Greetings
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I like the alliteration! I have used “sensible tug”… and I tell the kids that a sensiblebtug for a 4 AWG lug is “all you got!”
I’m not sure how literally to take this simile, but in my experience the radio does not reboot real quick. Unless you’re seeing a disconnection time of 45–50s, the radio is not rebooting. Similarly a roboRIO reboot is typically 20-40s. A disconnection shorter than that is likely to be either a faulty Ethernet cable or an Ethernet switch between radio and roboRIO rebooting.
We have seen a lot of problems this year with static build-up from game piece manipulation affecting nearby electronics like an Ethernet switch.