Landing Gear will not remain deployed

ArduCopter
1

I am having problems with the landing gear on my Tarot 650 Sport with a Pixhawk 6C running Arducopter 4.5.7. I have it configured to to automatically deploy during ascent/descent. I’ve assigned ch8 for landing gear control and set up so that when the transmitter switch is in the up position the gear will retract. But the transmitter gets upset when any switches are in the down position. Not to worry though as the grear remains extended during power up.

When I take off, the landing gear does not retract but remains in the extended position until I toggle the ch switch. The landing gear will retract and later extend, only to retract again after a few seconds. No matter how I toggle the switch I Cannot get the landing gear to remain in the landing position and I ultimately had to land on its belly, or rather on the lipo pack - no damage as I landed on grass and immediately disarmed.

Here are my parameter settings:

On the Extended Tuning page I have CH 8 set to Landing GEAR

On the parameters page:

LGR_RETRACT_ALT: 5
LGR_DEPLY_ALT: 3
LGR_DEPLY_PIN: -1
LGR_DEPLY_POL: 0

LGR_ENABLE: 1
LGR_OPTIONS: 3
LGR_STARTUP: 0 (Wait Foor Pilot Input) - should it be set to 2 (Deploy)?

These are left to defaults as I have no weight sensor:

LGR_WOW PIN: -1
LGR_WOW POL: 0

I’ve looked at other comments regarding landing gear issues but haven’t found any that seems to address my issues. Can anyone provide some guildance? Otherwise, I will reroute landing gear control directly to the receiver and stick to manual operation.

2

Seeing that you have not posted all the parameters relevant to Landing Gear post the parameter file or better a .bin flight log which the parameters can be extracted for and possibly expose other problems.

But, everything you need to know is in the Wiki:
Landing Gear

3

I read that wiki - that is what I used as my guide for configuring the landing gear. I didn’t think I needed to post a data flash log as I thought showing what parameter values I used would be sufficient.

4

I have decided to bypass the f.c. and connect directly to the receiver and control the gear manually.

5

I think your RC switch and LGR_DEPLY_POL parameter were at odds.

1 Like
6

My LGR_DEPLY_POL parameter was set at the default: 0 - I changed it to 1. But I’m wary about trying it again as I have mounted my camera and gimbal and don’t want to risk having to land with the gear retracted. I think that I will just leave the landing gear controller connected directly to the receiver and deply the landing gear manually.