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Unread 24-07-2012, 00:07
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Alan Anderson Alan Anderson is offline
Software Architect
FRC #0045 (TechnoKats)
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Re: Odd PWM problem (Can't get full green)

I saw this behavior on all four of the drive motor controllers on a robot at IRI. A borrowed Jaguar that was temporarily swapped in for one of them also did the same thing. Full reverse gave solid red on the LED, but full forward was still blinking green. The code was correctly calling out Jaguars for the RobotDrive object. The Jaguars were very likely using factory calibration. The robot was off the floor when I watched it, with no load to speak of on the wheels, but I thought I could see and hear a slight but distinct speed difference between full forward and full reverse (Jaguar forward was actually robot reverse on one side of the drivebase, of course).

When I noticed the odd Jaguar blinks, the team was in the process of trying to figure out a different mysterious problem, almost certainly a mechanical one. They didn't feel it was necessary at the time to try to track down what was going on with the speed control.