Cannot connect APM with telemetry

Hi all!



I have my new 433MHz air module. I have set both ground and air module with exactly the same settings. Now when both are powered, green led is fixed on both and both have blinking red led. So they have a bounded connection and transmit something. But somehow I cannot connect the APM. When I select the right port (COM8) and 57600 as baud rate, it just cannot find the other. Here below is the configuration.
3691064505?profile=original
And here is the error I get then
3691064429?profile=original
I would be very pleased if someone could suggest me something to try because I have been trying to connect them for hours now.

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Replies

  • How do you power APM?

  • Double checked, via the 3dr config tool, both air and ground module communicate. In the terminal window I can transmit messages to both. Any parameter in the MP to change except the SERIAL3_BAUD set to 57? I have also tried with different baud rate on both modules, on the COM Port paramter of Windows and in this serial3_baud parameter, no change.

    Any idea?

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