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Unread 09-01-2013, 08:09
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AKA: Phil Malone
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Re: [FTC]: NXT Lockups in LabVIEW

Quote:
Originally Posted by BornaE View Post
Phil,
Any updates on this? While helping 4314 I encountered the same issue, However this happens very consistently using tether or samantha. I do hear the clicking noise a couple of seconds after enabling the robot.

The code is very basic. The only addition beside regular VI's is the hitechnic prototype board VI to read an analog.

Spent about 2 hours troubleshooting this with no luck.
Hi

After we had this happen a few times, one of the kids thought he remembered that it had hapenned on their robot a few years back and it was "caused" but metal shavings falling into the NXT wire sockets on the motor/servo controllers.... that is... an electrical problem on the communications bus.

While I didn't specifically recall this (or believe it) , I thought it was probably a good idea to ensure that all the connectors were free of debris, so we did a serious vacuum inside all the sockets, and then we put electrical tape over all the open connectors sockets.

Oddly enough, we haven't seen the lockup since them (knock wood).

The fact that you are using the prototype board might indicate that you possibly have a bad connection that is also effecting the communications on the NXT data bus.

Do you get the same problem if you unplug the proto board?

Phil.
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Phil Malone
Garrett Engineering And Robotics Society (GEARS) founder.
http://www.GEARSinc.org

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