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Permalink Reply by Garth Tissington on May 6, 2012 at 12:20am

Hi, I have a APM1 and two APC220s + usb ttl converter (From Good Luck Buy).  I'm on MissionPlanner 1.1.80 mav 0.90 and Quad Firmware 2.5.4.

I just cannot get the APC serial link to work?   Both APC220's work fine with RF Magic to set the baud rate etc.

However, when I try to connect on COM2 (where the USBTTL dongle is configured) I just get a timeout in 30 seconds saying "No Heartbeat detected"  Rx TX lights on the APM1 do not even flicker

I tied this also with HK GCS.  No luck there either.  So, I'm suspicious that either I have it connected wrong or one of the modules is defective.  I have double chcked and rechecked everything n the APC connecitons and it all looks good to me.

Can anyone suggest a way that I can debug this further to identify the cause?  

Thanks.

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Permalink Reply by Oliver on May 6, 2012 at 12:39am

Hi Grath,

The device currently doesn't work with the APM Planner. Using HK GCS it works with no problems. How did you set up your APC's? Using 19 k for the communication way between them I guess, but what are the external speeds? If you have lowered them to 19k then the parameter for the connection speed to the APM has also to be modified in order to get the device working.

Kind regards,

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