Actually I am flying in manual mode suddenly drone satellite count went 27 to zero and my drone was crashed , kindly give me the solution as soon as possible i am attaching the log file below link log file
Hello @sandeep2308 , welcome to the community,
Has this vehicle been correctly and methodically configured?
Can you post vehicle pictures and describe the vehicle components?
No my drone was not methodically configured
Components
|CUBE ORANGE |
|X6 MOTORS |
|FRAME X |
|HEXA CONFIGURATION |
If you have an hardware issue (I do not have acces to a PC and can not review the log right now) then you need to replace the defective component.
If the battery is depleted you need to recharge it.
If the configuration is incorrect the fastest solution is for you to use the ardupilot methodic configurator software to solve your problem.
Some other user might help you pinpoint the exact issue. But now you have some of the possible solutions.
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Satellite count sounds like a symptom of something else going wrong, like a supply voltage.
Just losing sats and the GPS unit doesnt automatically cause a crash.
Thankyou for the reply we are greatful for it.
Everything regarding power supply was good it is 46.0v at the time of crash and current consumption is also normal as 120A.
The moment it lost the satellite count HDOP value increased to 100 and this led to misbehaving of drone (with out any command from the pilot it went roll left) and crashed into a tree.
I want to know what would be the reason for sudden loss in the satellite
count.?
Your reply for this would be much helpful for us.
Loss in satellite count is a normal event and does not cause a crash.
What causes crashes is bad hardware and/or incorrect configuration and tuning.
And bad hardware interference can cause satellite count loss. So you causality is wrong.
It has nothing to do with GPS. We can fly drone without GPS module in acro(manual ) mode. But we canโt fly drone without RC controller when in acro(manual ) mode.
Check your failsafe settings, especially radio failsafe.
You can configure failsafe RTL for radio link lost, default is None, so it will fall out from the sky.
โ EDIT: Previously I thought of RC lost. But it seems crashed before RC lost.
โ EDIT2: Quite a lot of RC movements from 21:10:37 to 21:10:57, Is the screw loose?
If you look more closely the pitch and roll are departing ways about 2 seconds before the HDOP went bad. Itโs likely the GPS reception issue is more of a symptom of the bad attitude.
The attitude control started to go bad probably because there was a catastrophic problem with Motor1.
Maybe the motor or ESC failed, maybe the prop broke, or even the arm.
If it was just a desync, since it appears Motor1 did recover, then maybe tuning was poor enough that the hex was not able to maintain enough control.
All the other errors and warnings come after the copter collides with the tree.
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Thankyou for the Analysis we will improve from our side
your effort is very much appreciated.
Do you think your sprayer is potentially the cause?
Maybe after the fix, more longer flights without Sprayer activation.
I do not think it is the GPS issue as @xfacta said. The motor curve is not normal before GPS HDop goes to 100.
My guess is something has to do with your power. Ampere spike up, voltage spike down. drone hit to an object?
1558 09:54.6 MSG 159141167 ArduCopter V4.3.2 (fcef79e7)
1559 09:54.6 MSG 159141196 ChibiOS: 66e5de0d
1561 09:54.6 MSG 159141219 CubeOrange 003E004E 33325115 31323432
1562 09:54.6 MSG 159141240 Param space used: 2263/5376
1563 09:54.6 MSG 159141264 RC Protocol: SBUS
1564 09:54.6 MSG 159141271 New mission
1565 09:54.6 MSG 159141278 New rally
1566 09:54.6 MSG 159141285 New fence
1575 09:54.6 MSG 159142989 Frame: HEXA/X
1579 09:54.6 MSG 159143015 GPS 1: specified as UAVCAN1-125
25143 10:33.3 MSG 197860407 EKF3 IMU2 MAG0 ground mag anomaly yaw re-aligned
25145 10:33.3 MSG 197862867 EKF3 IMU0 MAG0 ground mag anomaly yaw re-aligned
25149 10:33.3 MSG 197870438 EKF3 IMU1 MAG0 ground mag anomaly yaw re-aligned
28753 10:39.6 MSG 204120675 Sprayer HIGH
37759 10:55.0 MSG 219571026 EKF3 lane switch 2
37762 10:55.0 MSG 219571125 EKF primary changed:2
39080 10:57.2 MSG 221740378 Crash: Disarming: AngErr=32>30 Accel=0.5<3.0
39088 10:57.2 MSG 221742705 EKF primary changed:1
40521 10:59.8 MSG 224321058 Arm: Leaning
54439 11:23.2 MSG 247802867 Radio Failsafe - Disarming
71882 11:54.1 MSG 278623930 PreArm: Radio failsafe on
