Quote:
Originally Posted by DonRotolo
Before we move to "solutions" the step of identifying the problem has yet to be completed. PLEASE stop chasing ghosts publicly, the symptoms so far do not support a power issue with the radios. If you want to test your robot at home, feel free, but stop throwing assertions and opinions out there as facts because those of us who are trying to find a real problem are not happy with waters getting muddied. Bad info is worse than no info, since unsuspecting teams may rely on bad info.
That being said, our comms issue went away in our last 2 matches at MAR CMP and in 8 matches here in STL has not returned. Nothing was changed, so we don' t know why. Yet.
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I haven't posted to this topic in a bit and yesterday when you posted this I was on my way to FEDEX to deliver a backup shipment of boards to Linuxboy. Sorry I didn't see this sooner but I'm recovering from pnuemonia.
First off, I offered merely a solution to remove power quality issues for the D-Link AP not a guaranteed solution to everything that effects the communications. Please quote me in context.
Secondly:
Team 11 certainly did have power issues with the radio systems.
Other teams certainly did have power issues with the radio systems.
Telling me there is no power issue with the radio denies Team 11 had a power issue with the radio subsystem and so did others. It denies that I have here a bad DC-DC converter that took 3 matches worth of dysfunction on the field in Philly to find, and others have seen the problem go away when the PDB was replaced.
I'm sure it's a real problem if our team is stuck on the field for 3 matches just like anyone who has problems besides the power quality issues. Just as I am sure it's a real problem if your team is stuck because of a software problem.
The fact is there is obviously more than one thing not quite right with the radios and the systems that power them. That was my entire point. Outright denying a power problem can and sometimes does exist...either because of the parts or because of the wiring refutes the evidence that even those who do so present. It also misdirects the people that do actually have power problems effecting them.
A loose connector on the D-Link is a power quality issue. Why are we intent on saying that doesn't happen when in point of fact even Al notes it often does? Not all power quality issues are about the components sometimes it's just the wiring in the power system.
So far as how I troubleshoot the problem: how would you like me to troubleshoot a problem that per the posts in this topic seems to exist most often only on a competition field...when i don't have a competition field to work with? Even when I worked at spare parts at MAR Mount Olive it's not like I can put things on that competition field that FIRST won't allow. Furthermore thanks to my efforts we no longer can dispute that FIRST will not allow it, they officially said no (as I originally stated they would before everyone led me to believe I was incorrect...again why is this my problem when I was correct?).
We do have a field but we certainly don't have the competition field parts.
If the issue was about me distracting this topic I openly offered to take this conversation out of this topic. Such an argument is a straw man.
I do respect you and the others Don. However, expending so much effort on scapegoating me to cover for a power quality issues that sometimes do exist is not a reasonable thing to do. The reasonable thing to do if you all feel it distracts is offer me another place to discuss this issue like another topic (I can't create topics myself).
If you tell people to troubleshoot for a software issue and they have a power quality issue then like Team 11 they'll spin their wheels rifling through the software looking for what might just be bad power supply to the D-Link. Then what? Who's fault is it then? The guy offering the solution to help rule power quality issues out quickly? I think not.
Furthermore, I asked repeatedly in this topic if anyone load tested the D-Link power supply and no one replied. So if you wonder how the bad wiring or bad component (no matter the rarity) might slip through you need look no further than that.
Additionally, it's clear that despite the general assurance we'll find all the problems if I just stop communicating, Championships are over and obviously these issues remain. So what have we solved? How does the situation today differ from the situation at the start of March?