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Unread 19-03-2014, 20:42
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Adam Claussen
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Victor 888 Not responsive

When the code is not enabled, the indicator light flashes orange, and when the code is enabled the light flashes slowly red. We have tried different pwm cables, and the problem persisted. Also we swapped the pwm cable and the ports on the digital sidecar that the pwm cable is in with the cable and port of a working victor, and the victor that was working before continued working, while the victor that did not worked acted as before, flashing orange when the code was not engaged, and flashing a red when the code was engaged. We also rewired the motor controller and are sure it is wired correctly. What could cause this? Is it a dead victor or is there some other mysterious issue that we are not aware of?
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Unread 19-03-2014, 20:50
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Re: Victor 888 Not responsive

It's odd that the Victor is flashing red, the only reason an 888 should flash red is if calibration failed. Did you attempt to calibrate the Victor?
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Unread 19-03-2014, 21:02
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Re: Victor 888 Not responsive

Yes, we tried to re calibrate it, and it did not respond with the normal flashing green and red. It just continued flashing red.
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Unread 19-03-2014, 21:09
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Re: Victor 888 Not responsive

Does the motor move slowly, and/or do you measure voltage on the Victor's output terminals?
My guess is that the Victor is not calibrated properly, or the joystick is not returning to the neutral position.
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Unread 19-03-2014, 21:11
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Re: Victor 888 Not responsive

Should be related to calibration issue. Try to calibrate again.

http://content.vexrobotics.com/docs/...UserManual.pdf
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Unread 19-03-2014, 22:18
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Re: Victor 888 Not responsive

If not the victor itself, it's almost definitely a joystick error. We had a similar issue with 2 talons and a victor, the joystick axes simply feed a non-zero value to the speed controller.
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Unread 19-03-2014, 22:39
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Re: Victor 888 Not responsive

That's what I thought but we tried to calibrate it and when we pushed the calibrate button it would not go to the red/green blink. I am sure we were calibrating it correctly because we calibrated 3 other victors right before trying to do that one. We also restarted everything and tried again to calibrate it but had the same issue. Right now the motor doesn't turn, but I forgot to measure the voltage across the terminals. I will try to calibrate it again when we open it on Friday at our regional (we used the last of our open bag time today). Currently the motor attached to the victor will not turn at all. If anyone has any other suggestions please let me know, but other than that we don't know what else to do.
Thanks,
team 4474
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Unread 19-03-2014, 22:51
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Re: Victor 888 Not responsive

Per the Victor user manual (http://content.vexrobotics.com/vexpr..._20130118.pdf), it indicates failed calibration, as others have said.

Start by checking the code and the wiring - are you actually sending one of the joystick axis to the correct port for that victor?

You said you correctly calibrated 3 other victors before hand... can you temporarily swap the PWM cable from one working victor to the bad one and try calibration again (keep the DSC side the same, just unplug from the good victor and plug it into the bad one)?

Have you tried replacing the victor?
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Unread 19-03-2014, 23:07
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Adam Claussen
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Re: Victor 888 Not responsive

Quote:
Originally Posted by Jon Stratis View Post
Per the Victor user manual (http://content.vexrobotics.com/vexpr..._20130118.pdf), it indicates failed calibration, as others have said.

Start by checking the code and the wiring - are you actually sending one of the joystick axis to the correct port for that victor?

You said you correctly calibrated 3 other victors before hand... can you temporarily swap the PWM cable from one working victor to the bad one and try calibration again (keep the DSC side the same, just unplug from the good victor and plug it into the bad one)?

Have you tried replacing the victor?

I am almost certain that we are sending a joystick axis to correct port for the victor. We have already tried switching the pwm but keeping the dsc the same, but we did not try calibrating it like this. We will try this first thing Friday also no, we have not tried switching the victor, because no mater how dumb this sounds (and I admit that it is) we don't currently have a spare. If none of this works we may be able to borrow one from another local, better established team. This only being our second year we don't have many spare parts, and we unfortunately don't have much of a budget for spare parts. Thank you for your advice.
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