Good day all
I have completed my F450 copter with a pixhawk 2.4.8 a month or so ago.
APM copter 3.5.5
BL-Heli 32 ESC ( 40 A)
All went well and I completed all the tests : i.e. waypoint flights, RTL, failsafes...
all of it.
Started putting on a camera gimbal 2 nights ago and I was having problems.
Today, when I wanted to fly my copter the one motor did not want to spin.
I suspected a problem with me changing the PWM channel configs to access the gimbal.
I then reversed any settings made for the gimbal ( by referting back to the backups of the
parameter-list which I regularly make. I could then fly again but all of a sudden I had
a massive vibration issue. After all of my efforts failed I reverted to re-flashing my pixhawk
( now with the latest 3.5.7 ) and recalibrating everything.
I am now constantly getting a : pre-arm : check FS_THR_VALUE and in an effort to solve this , I disabled all arming checks ( just for the moment ) . I then get a GREEN LED which means the
pixhawk is readt but when I push my stick down and right, nothing happens. I also noticed during my
recalibraion, one of the last windows was a "checklist" of everything that checked out and the
last one was " are you able to arm the pixhawk with your RC " and it was red.
I cannor recall that, during the initial building of my drone, that there is a place to actually tell pixhawk to arm when you push your stick down and right.
Can someone assist please !!!
Many thanks !!
Since I made this post, I have done the following:
Reset all parameters to default. Re-calibbrated my copter.
I redefined another model on my RC ( incase it is something on my RC config )
I also did the following test:
I connected my 433MHz radio to my laptop and enabled my joystick so that I can fly my copter from the ground
station (MP). It armed and flew wonderfully. Even the vibration that I picked up all of a sudden is gone ( I suspect the ESC;s required a re-call )
But ... I cannot arm from my RC......
Oh dear .....
Good evening all
I have solved the problem and wish to add a description here so that anyone else can benefit.
Turned out that the RC needed calibration. Yes, I DID calibrate it during the the WIZARD cycle, but for one reason
or another, that was not sufficient. Please note : the display on RC calibrate (under initial setup on MP )did show normal activity i.e. bars changing
state as I moved the sticks. This does not imply correct calibration.
Here is what I did :
Before I did anything I did a test that I did not do before hand. And that is the lost-copter-alarm :
right gimbal down and right. And the fact that nothing happened, confirmed that there is something wrong with the RC
setup because an ARM can still be blocked by a pre-arm failsafe but a lost-copter-alarm should not be blocked.
Then I did a re-calibrate under Initial setup in MP NOT using the wizard. Then it armed and the lost-copter alarm also
Then something else happened : now my motors would not turn with the RC or with joystick-via-MP.
But a simple re-calibrate of ESC under initial setup NOT the wizard, fixed that.
I now have my drone in perfect flying condition again. I shall just go through all the flight tests again to check
all that functionality as well.
Not sure why an RC-calibrate worked for the hexa under the WIZARD but was not succesfull for the quad
See you all on the next one !!