Telemetry XBee PRO 2G4 problem with APM 2.5

Posted by Benny Simonsen on January 5, 2013 at 3:16am

Im trying to get telemetry running via a 2G4 Xbee PRO and 3DR interface boards bought from Build Your Own Drone.

The settings are:

Air interface set to MST (don't quite understand that term because I guess it's just to select 5V input voltage)

3690984178?profile=original

3690984352?profile=original

Interface Data Rate is set to 115200 and at the moment I have set Power Level to lowest (because I have the units 1 m apart during test)

I have tried different channels without any difference and the Xbee Retries which is set to 6 was just another attempt to get better results (but no difference)

If I try CLI over Xbee it looks something like this:

3690984317?profile=original

The above output is from hitting <Enter> ? <Enter> and obvious a lot of characters is missing or wrong.

I have not soldered CTS and 5V together on the air interface because there is a wire connecting it to the APM so I guess that was something that should be done when using it on pre 2.0 APM's

I have newer used Xbee before so any ideas to whats wrong in the setup?

Thanks

Benny

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –
Follow

Replies

  • Benny Simonsen January 5, 2013 at 10:29am

    Ok answer to myself.

    The baudrate on the APM is set to 57600 (not 115200). What did confuse me was that I could get some correct data both ways even when the Xbee were at 115200 (I have not figured out why?)

    Benny

This reply was deleted.