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Unread 21-02-2016, 19:26
cjl2625's Avatar
cjl2625 cjl2625 is offline
apel py
AKA: Cory Lynch
FRC #2067 (Apple Pi)
Team Role: Programmer
 
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Re: speed issues

Earlier in the season, we built a really rough prototype shooter, and it was going on and off when we tried running it at full speed. I checked the current readings on the CIM, and they were upwards of 50 amps when running at constant speed. The assembly was put together rather poorly, and it put a lot of strain on the motor, leading to these crazy high currents. I think the cycling problem was something on the roborio periodically cutting power to the motor to prevent the high current.

Maybe you're facing a different issue, but perhaps you could try checking the current readings from the PDP, or remove the motor from the shooter and see if the speed still fluctuates.
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Last edited by cjl2625 : 21-02-2016 at 19:52.
 


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