Quote:
Originally Posted by DonRotolo
I think you're looking too deep, the problem must be simpler. Like fixing a car, 99% of the time it's simple, just go back to basics.
Put a 12 volt light bulb across the Jaguar inputs, you'll (literally) see any brownout or breaker issues as you drive.
You say the wiring is good, how do you know? Explain your tests and their results.
In all your posts I see a lot of assumptions and third-hand information. To really solve this, we need first-hand data.
Thanks.
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I'll find some light bulbs to put on it and see what there is to see with that.
If it were a breaker issue, I would expect it to trip and stay that way.
The wiring was tested with multimeter for resistance from the lugs that would go on the Jaguar back to the power board.
A multimeter was applied to the Jaguar input power while it was run off the ground no major issues were noted (but multimeters are fairly slow to measure).
When the robot was misbehaving I did put an oscilloscope on the power supply once it was stationary and I saw no major issues that would account for the fact that the Jaguars at that time were basically locked up.
When we first encountered the problem weeks ago we just reboot the robot a few times. However, that was slow and painful. So we adjusted the software to detect the event of the Jaguar error and reset. For the most part that improved the situation as long as you ignore that we're still getting time out errors.
I don't have my numbers with me tonight. I'll have to swing by and get them and we don't have a DSO or an oscilloscope camera to work with, so I have no waveforms for anyone to look at.