Hey fellas,
I have had an interesting situation. My pixhawk hex has been flying beautifully with the turnigy 9x radio with the 9xtreme board. I've upgraded to the Taranis x9D plus, to unlock 16 channels.
First test flight today, and things go crazy.
Good GPS lock, started up the thing. From the get go something was wrong. Stick inputs were very delayed and 'dulled' for a lack of a better descriptor, and it just flew off on its own. I changed to RTL to see if autonomous mode it could come back, but it still kept flying away. Changed to Stabilize to manually bring it back, which it kind of responded to. Got low to ground, shut throttle down to 0 as I wasn't sure if it was going to go off again and couldn't risk that. It landed, but then suddenly powered back up and flipped.
Even with loiter and stabilise the drone was in an almost manual like mode i.e. not stable. It required a lot of effort to bring down
I have no idea what happened. This is bizarre, as the pixhawk has been flying beautifully before.
I've added a link to the log, and it would be great if someone could please shed light on what could have happened.
https://www.dropbox.com/s/40ss2pigal9gaoo/2.BIN?dl=0
Today's flight was to achieve 2 things:
1 - properly calibrate the voltage and current module as they have been off for a while and I had been using an external to the pixhawk telemetry to measure voltage and current
2 - to do a mag calibration with motors at max as I've just received my 3dr v2 radio
Radio has been calibrated, as has the compass/accel. 6 flight modes have been programmed using logical switches linked to physical switches, all modes switched well when testing via usb tethering to the pixhawk.
Replies
CH3 Throttle RCIN vs RCOUT
I don't understand why it was not shutting down throttle when I had my throttle stick at minimum. It kept going.
CH3 RCin is your throttle and CH3 out is motor 3 which has nothing to do with CH3 RCin.
You can see when it was in Stabilize it did cut power put then it went into Loiter mode which means the autopilot has control of the motors and they go back up.
I think you need to check your mode switch or radio calibration. You were in Loiter mode when it landed not Stabilize.