[AustinH]

Originally Posted by Trevor4004

My team recently received our navX board and we are very excited about the possibilities it will give us. However, the power LED on the RoboRio turns a solid red when we plug it directly into the MXP area of the RoboRio as described in the Plug-n-Play section of the navx-mxp wiki (https://code.google.com/p/navx-mxp/wiki/RoboRioInstall). The RoboRio User Manual says that a solid red for the power LED means "Fault condition detected. One or more user voltage rails are in short-circuit or overcurrent condition."

Our first thought was that the short-circuit or overcurrent problems were due to some strange interaction between the naxv board connecting to the RoboRio via MXP and our daisy chain going from the RoboRio to the PDP and containing 4 talon srxs and the PCM. But this doesn't seem to make a lot of sense considering this board is supposed to be designed to work with the RoboRio for FRC and a daisy chain of 4 talons and the PCM seems like a common setup in FRC.

We can still connect to the robot with out driver station, and we get full communication and robot code when we do. We are able to drive the robot around normally, but we are worried about trying to test the navx in our code until we can determine why the RoboRio is detecting a short-circuit or overcurrent condition. Any insight into why the RoboRio is detecting these problems would be greatly appreciated. Thank you.

Have you considered plugging it in via the onboard I2C/SPI ports instead of the MXP? IIRC, we're going to be attempting that due to the less than ideal mounting location of our RoboRio. You'd have to supply the board with its own power, but it could be useful for troubleshooting purposes.