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  2. 3 months ago

    kmmohn

    Sep 23 Monroe MI 3547

    @dcjrracing11 Some one with vex care to comment?

    Someone with vex did comment, in the official Q&A where the question was asked weeks ago:
    https://www.robotevents.com/VRC/2018-2019/QA/35

  3. Barin

    Sep 23 Arizona
    Edited 3 months ago by Barin

    @tabor473 How do you plan on crimping a cable with that many pins? Individually instead of all the pins at once?

    Also it looks like none of the standards for PoE come close to the power requirements of a V5 motor ...

    https://en.wikipedia.org/wiki/Power_over_Ethernet

    To add on, the most common standard for PoE uses 48 V, which requires both boost circuitry at the source and buck circuitry at the sink to be useful. The reason for 48 V is to mitigate the losses (especially heat) from higher currents.

    The only remote hope of V5 working safely with off-the-shelf cabling would be if the Brain had boost conversion and every motor had a buck converter, which would require both the Brain and motors to be larger and more expensive.

    I think the competitively-priced (yes, I think so too) cabling is far more reasonable.

    @dcjrracing11 While Cat5 might be cheap, I wouldn't trust it for PoE use, let alone V5. Cat6, of which I would trust reputable brands' cabling, is priced about the same as VEX cabling.

  4. lacsap

    Sep 23 Event Partner, V5 Beta Tester Massachusetts 9791[a-z]
    Edited 3 months ago by lacsap

    @dcjrracing11 Logically how is it going to damage equipment cable is cable.

    I can order 1k foot of cat 5 cable for 50 bucks while only 26 ft of the vex cable is 7 dollars how is that competitive pricing? im looking at a stand point from the teams who don't have the funding...

    Again, it is not what you wish, but what the rules explicitly state - it will not pass inspection since it is not made from VEX branded bulk cable. Not worth arguing, since 99% sure the GDC will not change this rule.

    As for the electrical characteristics needed, others have commented to those points.

  5. I called Vex and they said the cables, ends and tool were in stock and would ship immediately? That was Friday, I'll let you know when they actually arrive.

  6. jpearman

    Sep 23 Moderator, ROBOTC Tech Support, V5 Beta Moderator Los Angeles 8888

    Aside from the rules stating that V5 smart cables must be used for competition. Not all cables are created equal, here is a comparison, I don't have specs for either the VEX cable or the random silver 4 conductor phone cable I had, but there's a significant difference.

    smart_cable.png

  7. lacsap

    Sep 23 Event Partner, V5 Beta Tester Massachusetts 9791[a-z]

    @jpearman Aside from the rules stating that V5 smart cables must be used for competition. Not all cables are created equal, here is a comparison, I don't have specs for either the VEX cable or the random silver 4 conductor phone cable I had, but there's a significant difference.

    [attachment:5ba819bb8e76c]

    careful, looks like you stripped the insulator on common of your VEX cable :). Was that using the new VEX tool or you pocket knife?

    (humor)

  8. jpearman

    Sep 23 Moderator, ROBOTC Tech Support, V5 Beta Moderator Los Angeles 8888

    @lacsap careful, looks like you stripped the insulator on common of your VEX cable :). Was that using the new VEX tool or you pocket knife?

    (humor)

    haha, yes I saw that after I took the photo. No, I do not have the VEX tool.

  9. lacsap

    Sep 23 Event Partner, V5 Beta Tester Massachusetts 9791[a-z]

    @jpearman haha, yes I saw that after I took the photo. No, I do not have the VEX tool.

    Kids, don't do this at home...

    we learned the hard way at worlds what happens when you short main battery leads in competition.

  10. jpearman

    Sep 23 Moderator, ROBOTC Tech Support, V5 Beta Moderator Los Angeles 8888

    Black is actually not common, it's one of the signal wires.

  11. lacsap

    Sep 23 Event Partner, V5 Beta Tester Massachusetts 9791[a-z]

    @jpearman Black is actually not common, it's one of the signal wires.

    oops - see, that's why I won't be allowed to touch nice things :)

  12. I just received the cables, ends and tool ordered last week. Also the balance of V5 motors ordered in July, we now have enough motors for (8) per robot. Vex is working through this. Thank you Vex.

  13. lacsap

    Sep 26 Event Partner, V5 Beta Tester Massachusetts 9791[a-z]

    still nothing here - we ordered in june/july

  14. sazrocks

    Sep 26 Arizona 2114V

    @lacsap still nothing here - we ordered in june/july

    Is it tools/cable stock that you are missing? If so contact vex support; I ordered mine in August and they shipped in a day or two.

  15. lacsap

    Sep 26 Event Partner, V5 Beta Tester Massachusetts 9791[a-z]

    @sazrocks Is it tools/cable stock that you are missing? If so contact vex support; I ordered mine in August and they shipped in a day or two.

    Bundles and motors.

    as for contacting VEX support you can not via email because they do not have time...

  16. AlexM_4478X

    Sep 28 Monroe, CT 4478X

    @sazrocks Is it tools/cable stock that you are missing? If so contact vex support; I ordered mine in August and they shipped in a day or two.

    We are missing tools and cable stock, but it said it would ship in 8 weeks from our order. It is still processing but should ship next week. To be fair, we did have a large order of stock so I understand not getting it very fast.

  17. CyberHawks7983

    Sep 28 Event Partner, V5 Beta Tester Bakersfield, CA 7983 (A,J,K,M,R,U,W,Z)
    Edited 3 months ago by CyberHawks7983

    Has anyone received an e-mail response from VEX sales lately? Its been a couple weeks for me.

  18. lacsap

    Sep 28 Event Partner, V5 Beta Tester Massachusetts 9791[a-z]

    @CyberHawks7983 Has anyone received an e-mail response from VEX sales lately? Its been a couple weeks for me.

    Got an email yesterday saying they needed more information about my order - I gave them the info - have not heard back from them. So, pretty much waiting game.'

    In the email they indicated that they were hoping to get more systems out this coming week.

  19. 5 days ago

    JGunnell

    Jan 11 Las Vegas, Nevada 64W
    Edited 5 days ago by JGunnell

    Does anyone know what gauge wire is used in the v5 smart cables? It appears to be 24 awg from @jpearman 's picture, but I'd like to be sure...

  20. lacsap

    Jan 11 Event Partner, V5 Beta Tester Massachusetts 9791[a-z]

    @JGunnell Does anyone know what gauge wire is used in the v5 smart cables? It appears to be 24 awg from @jpearman 's picture, but I'd like to be sure...

    To be clear, you may not make your own cables for competition. VEX Cable stock is labeled with V5 logo, so it can spotted during inspection.

  21. 4 days ago

    callen

    Jan 11 Braintree, MA, USA

    @lacsap To be clear, you may not make your own cables for competition. VEX Cable stock is labeled with V5 logo, so it can spotted during inspection.

    Speaking of this, what if you use official V5 cable and there is no V5 logo? Since I've thought about it, I'm going to make sure any really short pieces are cut to put the V5 logo in the middle. And they did put a logo every 4 1/8", which is pretty often. But if there are 4" or fewer (not often, obviously) between the two connectors, it is possible for the logo not to show, even if infrequently.

 

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