RC_CHANNEL_OVERRIDE not working in mavproxy using MegapirateNG R3

[Alexander9005]

I'm still new in using mavlink with Mavproxy as GCS to control my quadcopter. For your information, i'm using Crius Megapirate NG R3 here as the firmware instead of APM. I plan to use RC_CHANNEL_OVERRIDE to override the RC channel using this command ( RC all 2000) in Mavproxy but somehow my quadcopter seems to have no response at all. Can you pls help on this? I need it urgently for my final year project. Thanks in advance. :)

[Alexander9005]

Sir Alex, can you pls help me on this? i'm afraid that i missed out something real important which cause such problem. Thanks

[SirAlex]

Hi! Can you share your code where you try to use overrides? I'm never tried mavlink so currently can't help you.

[Alexander9005]

Thank you SirAlex for your response. This is the part where I tried to use the override command but failed. ........ override = mpstate.status.override[:] ........

RC Override for landing

                if (biggestblob.x>xmin) and (biggestblob.x<xmax):
                    if (biggestblob.y>ymin) and (biggestblob.y<ymax):
                        print("Blob is centered, attempting to LAND")

                        #Override RC Channel to Landing Mode 
                        override[4] = 1000
                        print("Got here to override")
                        mpstate.status.override = override
                        mpstate.override_period.force()
                        print("Override successful")

This code is supposed to override the RC channel when red target is detected at the center. But somehow, my quadcopter shows no response at all. I even tested the pwm output of the pin on the Crius AIOP board but shos no difference. The overall code is sent via this mail rsoft@tut.by

[Alexander9005]

SirAlex, for more references.....This is the main command in mavproxy.py for "rc override" command.

def cmd_rc(args): '''handle RC value override''' if len(args) != 2: print("Usage: rc <channel|all> ") return value = int(args[1]) if value == -1: value = 65535 if args[0] == 'all': for i in range(8): mpstate.status.override[i] = value else: channel = int(args[0]) mpstate.status.override[channel-1] = value if channel < 1 or channel > 8: print("Channel must be between 1 and 8 or 'all'") return mpstate.status.override_counter = 10 send_rc_override() print("RC Override sucessful")

[garethdsouza18]

Alexander9005, were you able to fix this issue? i am facing a simillar problem with the RC_channel override