Thread: Classmate Static Discharge Susceptibility
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Unread 08-03-2010, 13:07
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Re: Classmate Static Discharge Susceptibility
Quote:
Originally Posted by Mark McLeod View Post
Similar symptoms I saw this weekend were tracable to under-powered USB devices. All Comms are good, but the robot doesn't respond to the driver controls.

These are the USB mistakes I saw teams making:
  • If you are using the PSOC it is usually the biggest power-hog. That must be plugged directly into the Classmate.
  • The USB hub should be plugged into the other Classmate USB connector and the joysticks into that.
  • If you have a real power-hungry game controller - lights/vibrate/etc. - that needs to be plugged directly into the Classmate too. So you may have to choose between the PSOC and any fancy game controller.
  • The Stop switch they gave us in the KOP is NOT used at competition. Unplug the power drain to run those color changing LEDs.
That is interesting because I saw a couple teams with that configuration at NJ who had problems. Instead, I suggested that they plug bot the USB hub connectors into the classmate and power the PSOC via the hub. That seemed to work.

On a side note, I am so glad we did not have to use the PSOC this year.
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