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Telemetry on APM2.5 not working, was fine on APM2.0

Posted by criro1999 on April 3, 2013 at 6:58pm

I did receive a new APM2.5 with its new telemetry cable.

I did try to connect APM2.5 with MissionPlanner with telemetry (XRF or XBee modules), using the same setup I did have with APM2.0. It was working perfect with APM2.0.

But not more able to connect with APM2.5. I am using same 57600 rate and proper port number.

What is new on APM2.5 except the new small connector on APM side?

Is any difference on telemetry pin conections on tx/rx side between 2.0 and 2.5?

Should I try different rate?

Please help.

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Tags: apm25, telemetry
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Replies

  • Maltair November 21, 2013 at 3:24am
    Perfect, thanks!
  • Maltair November 20, 2013 at 1:57pm
    Man, you figured out! Nice going.
    Could you please publish what the pin out for the cable is? I took mine apart to sleave it and screwed up the wire order :/
  • criro1999 April 4, 2013 at 6:57pm

    Gotcha!

    It works. I did change the pin cable connectors on XBee side (big connector) and now telemetry works.

    TX-RX, RX-TX, (+), (-)

    I would suggest to write on documentation or on case the pin description for APM2.5, This was OK described on 2.0, but not on 2.5.

  • criro1999 April 4, 2013 at 5:56am

    Can someone please tell me the pins connectors for the APM2.5 telemetry cable?

    It looks the cable has 2 black wires switch, I need to confirm the location. On wiki I did see just the cable picture, but not pin out.

    Old APM2.0 cable did work OK with APM2.0, but with the new APM2.5 (small connector) telemetry does not more work, with the same Xbee/XRF modules.

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