I removed the propellers and tested my Hexa on a desk. Motors behave erradicaly. [solved: had to put propellers on]

ArduCopter
1

Hello community,
I am writing because I am having a problem with the motors of my hexacopter drone. After doing an esc calibration, I ran an engine ignition test (without propellers as I wasn’t sure of the likely outcome of it), but unfortunately when I accelerate gradually, a random engine does not continue with its “acceleration”. If I repeat the same procedure, another motor at random behaves in the same way, thus always remaining with 5 motors running.

Also, I encountered the “CRASH: DISARMING” error which caused all engines to shut down instantly (luckily I didn’t fly !!!)

I would like some clarification on how to solve this problem.
Thank you in advance for your availability.

PS: below the text of the logs!

Log File C:\Users\Alfio Zammataro\Desktop\APM\LOGS\HEXAROTOR\1\2021-03-11 12-00-53.log
Size (kb) 5200.0673828125
No of lines 61493
Duration 0:03:59
Vehicletype ArduCopter
Firmware Version V4.0.3
Firmware Hash ffd08628
Hardware Type
Free Mem 0
Skipped Lines 0
Test: Autotune = UNKNOWN - No ATUN log data
Test: Brownout = GOOD -
Test: Compass = GOOD - mag_field interference within limits (3.48%)

Test: Dupe Log Data = GOOD -
Test: Empty = GOOD -
Test: Event/Failsafe = FAIL - ERRs found: FS_THR CRASH
Test: GPS = GOOD -
Test: IMU Mismatch = NA -
Test: Motor Balance = FAIL - Motor channel averages = [1413, 1485, 1514, 1364, 1310, 1468]
Average motor output = 1425
Difference between min and max motor averages = 204
Test: NaNs = FAIL - Found NaN in CTUN.DSAlt

Test: OpticalFlow = FAIL - FAIL: no optical flow data

Test: Parameters = FAIL - ‘MAG_ENABLE’ not found
Test: PM = GOOD -
Test: Pitch/Roll = GOOD -
Test: Thrust = GOOD -
Test: VCC = UNKNOWN - No CURR log data

2

You are not supposed to do that test. It just does not work that way. The control loops will make the motors behave in a way that look like it is faulty, but it is not. Many users before you have fallen into the same fallacy. “Carsh: disarming” is also normal under these circumstances. Search the forum there is usually one or two users that do this wrong assumption per month.

Just use the Mission planner motor test feature to test the motors. If that works, update to ArduCopter 4.0.7, put the propellers on an go fly!

3

oh ya I am one of them
What thats not right the motors are doing weird stuff…stop help call the fire department…Ask @amilcarlucas for help…oh. doh…um…sorry.

4

Oh, thanks!
I am slowly venturing into this wonderful world of drones, so it was a new problem for me.
Thanks so much again!