Thread: ANNOUNCING: navX MXP Robotics Navigation Sensor
View Single Post
  #273   Spotlight this post!  
Unread 01-02-2016, 23:18
slibert slibert is offline
Software Mentor
AKA: Scott Libert
FRC #2465 (Kauaibots)
Team Role: Mentor
  
Join Date: Oct 2011
Rookie Year: 2005
Location: Kauai, Hawaii
Posts: 349
slibert has much to be proud ofslibert has much to be proud ofslibert has much to be proud ofslibert has much to be proud ofslibert has much to be proud ofslibert has much to be proud ofslibert has much to be proud ofslibert has much to be proud ofslibert has much to be proud of
Re: ANNOUNCING: navX MXP Robotics Navigation Sensor
Quote:
Originally Posted by schleprock View Post
we successfully connected the SPI port using CS0 on the roborio to the SPI connection on the navx board. no connections via the mxp ports. we used the +5V pin on the roborio SPI port to power the navx. everything seems to work according to the DataMonitor java test.
one thing to note, in a previous post you had indicated that we needed to connect MOSI to MISO, that is NOT the case. when i tried that, no data. connecting MOSI to MOSI and MISO to MISO worked.
i know you had indicated using the USB for power, but both of our USB ports on the roborio are being used. it seems to do fine with the +5 pin from the SPI port. when does a roborio stage 2 brownout occur?

thanks for your help.
Please see item #2 on the navX-MXP Best Practices page for details on RoboRIO stage 2 brownouts. There's a link on this page to more details on stage 2 brownouts.

One other option is to provide 5V to the navX-MXP (via the 5V pin on the navX-MXP SPI breakout connector) from the VRM, which provides a regulated source of 5V that is not impacted by a RoboRIO stage 2 brownout.
Reply With Quote