Can't get RCn_FUNCTION to work on Aux5 and Aux6 (RC13 and RC14)

Posted by Jacques Eloff on January 25, 2016 at 12:59am

Hi - hoping for some help here. I did post this in the Pixhawk user group but no reply.

I am using my Pixhawk in a fairly complex fixed wing mapping drone and I need to free up some channels for some added functionality. Basically I am using Aux3/RC11 port for second elevator control and Aux4/RC12 for automatic camera shutter control (these are both using the appropriate RCn_FUNCTIONs).

Since these functions don't need their own RC input functions, I would like to move them to Aux5/RC13 and Aux6/RC14 ports so that I can use the freed up ports for other functions with RC input. Problem is I cannot get the RCn_FUNCTIONS to work on Aux5/RC13 and Aux6/RC14 ports. I have assigned the appropriate parameters for camera and second elevator, but they don't work.

According to the Wiki I should have 10 channels available for RCn_FUNCTIONs (ie. RC5 to RC14) so I'm pretty stumped!

Thanks,

Jacques 

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

Join diydrones

Email me when people reply –
Follow

Replies

  • Abolo February 10, 2016 at 12:43pm

    how I can  use channel 5 or 7 for change mode to RTL

    • Jacques Eloff > Abolo February 10, 2016 at 1:09pm

      Not sure I understand your question. 

      Why not just configure it using your Tx and flight modes selection in Mission Planner? Like you set up any other flight mode?

    • Abolo > Jacques Eloff February 10, 2016 at 1:40pm

      I have three modes in ch6 manual , stab , auto ,

      and i want to add RTL from the rc since I am not using telemetry to do that from mission planner during the flight ,

      hope you get the idea ?

    • Jacques Eloff > Abolo February 10, 2016 at 1:44pm

      I could help you if you have Futaba (there is a video I can dig out which is what I followed). Basically you use a combination of 2 position and 3 position switch and programmable mixing. What radio system do you use?

    • Abolo > Jacques Eloff February 10, 2016 at 4:06pm

      oh no my rc is JR

    • Jacques Eloff > Abolo February 10, 2016 at 11:21pm

      Have a look at this anyway, it's probably quite similar for JR:

      http://diydrones.com/profiles/blogs/acmapm-futaba-t8fg-super-mode

      This way you can have 6 flight modes!

  • Developer
    Grant Morphett January 31, 2016 at 11:13pm

    Could you attach a dataflash log with you trying to use the outputs so we can have a look please?

    To confirm it was all working fine on RC11 and RC12 and you are simply trying to move them to RC13 and RC14?

    Make sure you don't have and of the RELAY_PIN# set to anything except -1.

    How are you powering the servo rail?

    Thanks, Grant.

    • Jacques Eloff > Grant Morphett February 2, 2016 at 2:29am

      Grant to the rescue again :-)

      Thanks so much, mate, all sorted. RELAY_PIN and RELAY_PIN2 were set to 54 and 55 respectively, so I changed both to -1 and now I have another 2 channels!!

      Thanks,

      Jacques 

    • Developer
      Grant Morphett > Jacques Eloff February 2, 2016 at 4:37pm

      That's great news!

      Thanks, Grant.

  • Martin Poller January 25, 2016 at 2:15pm

    Hi jacques, did you set the parameter BRD_PWM_CNT=6 to enable the six aux outputs to RC9 to RC14. It's set to 4 by default so Aux5 and 6 would still be digital.

This reply was deleted.