First crash：after launch my quad in stab mode, I switch to auto model. However it flies to quite another unknown point and striked building/crash!
Log as follows:
Log File C:/Program Files/Mission Planner/logs/2014-08-15 11-46-40.log
Size (kb) 137.7998046875
No of lines 2136
Duration 0:00:29
Vehicletype ArduCopter
Firmware Version V3.1.4
Firmware Hash ca0652fe
Hardware Type APM 2
Free Mem 1167
Skipped Lines 0
Test: Autotune = UNKNOWN - No ATUN log data
Test: Balance/Twist = GOOD -
Test: Brownout = FAIL - Truncated Log? Ends while armed at altitude 16.66m
Test: Compass = GOOD - No MAG data, unable to test mag_field interference
Test: Dupe Log Data = GOOD -
Test: Empty = GOOD -
Test: Event/Failsafe = GOOD -
Test: GPS = WARN - Min satellites: 9, Max HDop: 4.01
Test: Parameters = GOOD -
Test: PM = GOOD -
Test: Pitch/Roll = GOOD -
Test: Thrust = GOOD -
Test: VCC = GOOD -
Second crash：At first I descend my quad in althold model stablely, suddenly the quad lose control and the posture disorder .
Log as follows!
Log File C:/Program Files/Mission Planner/logs/2014-09-08 17-10-20.log
Size (kb) 2468.439453125
No of lines 35828
Duration 0:10:52
Vehicletype ArduCopter
Firmware Version V3.1.4
Firmware Hash ca0652fe
Hardware Type APM 2
Free Mem 951
Skipped Lines 0
Test: Autotune = UNKNOWN - No ATUN log data
Test: Balance/Twist = GOOD -
Test: Brownout = FAIL - Truncated Log? Ends while armed at altitude 7.94m
Test: Compass = GOOD - No MAG data, unable to test mag_field interference
Test: Dupe Log Data = GOOD -
Test: Empty = GOOD -
Test: Event/Failsafe = FAIL - ERRs found: CRASH FS_BATT GPS_GLITCH
Test: GPS = FAIL - GPS glitch errors found (2)
Min satellites: 5, Max HDop: 4.47
Test: Parameters = GOOD -
Test: PM = GOOD -
Test: Pitch/Roll = GOOD -
Test: Thrust = GOOD -
Test: VCC = WARN - VCC min/max diff 0.302v, should be <0.3v
Replies
HDOP 4.1 ??? - That is SERIOUSLY to high for stable positioning ... needs to be under 2
Have you tried loiter before going Auto?
Log 1: Test: GPS = WARN - Min satellites: 9, Max HDop: 4.01
Log 2: Test: GPS = FAIL - GPS glitch errors found (2)
Min satellites: 5, Max HDop: 4.47
Test: Event/Failsafe = FAIL - ERRs found: CRASH FS_BATT GPS_GLITCH
Test: Brownout = FAIL - Truncated Log? Ends while armed at altitude 7.94m
In the second log there is also a GPS_Glitch reported as well as battery failsafe. The board also browned out.
I dint try alt before auto! The HDOP is bad indeed.GPS and vcc maybe the main problem. I change another PM today,and a 6H GPS today,and plan to test it tomorrow! Wish a good fly!
Good Luck ... keep us posted
And the log is in the attachments.