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Unread 01-02-2014, 21:11
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RyanN
AKA: Ryan Nazaretian
FRC #4901 (Garnet Squadron)
Team Role: Mentor
 
Join Date: Jun 2006
Rookie Year: 2005
Location: Columbia, SC
Posts: 1,126
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Re: Quality problems with parts

Quote:
Originally Posted by Joe Ross View Post
Like Nirvash said, issues 1, 3, and 4 are likely all related to not powering the Digital Sidecar correctly.
So the 5V light was on, just not the 6V. Looking at the schematic, the 6V power should have nothing to do with anything but powering servos on the DSC. Since 5V was working, the PWM interface should have worked. To fix #1, they replaced the DSC. The defective DSC came straight from the anti-static bag to the robot.

The tubing cut might have been the issue, but we went back with some that we've had around since my time and they're working just fine.

#3 is still an issue. However, it appears to be more of a controls issue. When the robot is disabled, the input reads correctly in the Periodic Tasks, but when it goes to Teleop, the input just reads low. I haven't had much time to look at the underlying code for this year, but it doesn't appear to be anything the students are doing to cause the problem. In other words, the behavior is completely undefined and does not logically make any sense.
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Garnet Squadron
FRC 4901
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Previous mentor and student from Team Fusion, FRC 364

Last edited by RyanN : 01-02-2014 at 21:14.