configuration of simpleRTK2B+heading

Q&A forumCategory: Questionsconfiguration of simpleRTK2B+heading
Massimo asked 3 weeks ago

Hi, I just bought a simpleRTK2B + a lite board to implement a gps solution for heading position. I loaded the configurations for rover (on the large board) and the moving base (on the lite board) using your preconfigured files. What I was expecting it’s a measure of heading in the RELPOSNED message on the rover USB port (using u-center) but I do not see anything (grayed values)
What am I missing ?
Massimo

Ardusimple Staff replied 3 weeks ago

If it’s in grey, it means either:
– The configuration file is not uploaded correctly
– The wrong configuration file was uploaded

Check that you are following all steps in the http://www.ardusimple.com/configuration-files page

Check that you are using not the standard rover file, but the rover of the simpleRTK2B+heading kit

2 Answers
maxdod answered 3 weeks ago

Thanks ! I checked and applied again the configurations. Probably the problem arised because I feeded the rover with ntrip rtcm data (no heading output). Actually I am able to get  the heading even if the results are not good. Moving the rover antenna position (for example I move 90° degrees the rover antenna than the moving base antenna fixed ) produces unreliable results. So I have more questions: If I want to apply ntrip correction from a base station have I to send to the moving base USB port ? why have I nonsense headings measurements ? I followed the suggestions on your tutorial and posed the antenna > 1 meter distance I want to use this configuration as IMU in a rover navigation package with ROS but I have to be confident about heading position Thanks Massimo

Ardusimple Staff replied 3 weeks ago

With our configurationf files, NTRIP data must be sent via the POWER+XBEE connector.
Unreliable results usually happen when signal levels are not strong enough. Did you follow all guidelines from the GNSS antenna installation guide? https://www.ardusimple.com/gps-gnss-antenna-installation-guide/

maxdod answered 3 weeks ago

thanks, I will send Ntrip to xbee port. In the meanwhile I tried again using 5hz configuration instead of 10hz that I tested yesterday. It seems to work better. I tested it putting the two antennas on the roof of my car, 2meters width . I got perfect heading while I was moving with my car. To compare I used the bussola of my iPhone and I have seen the same values while I was moving