Quote:
Originally Posted by Brandon Ha
I didn't read carefully, but it did not seem like you guys checked if there was a short. This would cause sporatic activities for some motors if they weren't grounded properly. You may want to check this out.
EDIT:
Also, the blinking lights do mean something. Look up on the victor website or somewhere else to find out the meaning of each light code.
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The checking for shorts was what I meant by no stray copper crossing. Checking all sorts of places for continuity and such doesn't show anything weird nor does a visual look. Moving the PWM connection does seem to have cured the symptom as it hasn't done it since. We will still be wary of it just in case but I feel more comfortable at this point, which is good since I need to actually take the thing off blocks to get final adjustments completed.
The LED on a Victor 888 has 4 modes, the first 3 being in relation to calibrated throttle. Green (full forward), Red (full reverse), Orange (Neutral), Flashing Orange (no PWM sensed). Normally when you power on the bot, all of the Victors will be flashing in sync since the RoboRio is booting up and going into Disabled mode. This pair, connected by a Y-Cable, was not synced which means it was getting "something" on PWM immediately at power-on and then at random times afterward.
I did catch the LED during one of the last "events" and it was solid Green, which is the Full Forward color for that side of the drivetrain, and then went back to flashing orange...all while the bot was in Disabled.