@Vusal_Jalilov wrote:
1) Describe the problem you are having. What is the expected verses the observed behavior?
I was simply loitering IRIS+ approximately 4 meters above ground. I expected failsafe battery to trigger LAND, because FS_BATT_ENABLE was set to 1:LAND. Instead, the copter climbed approximately to 20-30 meters and flew away from Home location, then crashed.
Even if the copter would specifically RTL, (as noted for the FS_BATT_VOLTAGE) then it still should have landed at the same location anyway, as it was ARMED their, instead, as noted above, it flew away from RTL location.
The moment it climbed up I did switch CH7 ON to force Land, but it didn't help.
I was having issues with compass and then accelerometer calibration, but I re-calibrated everything from scratch and had no Pre-Arm Errors.
2) Provide hardware information such as the brand and version of your autopilot, GPS, radio, and compass, as well as any other pertinent details about your setup.
3DR Iris+, Pixhawk/PX4, 3DR UBlox GPS + Compass Module, 2.4Ghz FrSky D4R-II 4 Channel Telemetry Receiver and FrSky DJT Telemetry Transmitter, 433 Mhz 3DR Telemetry Radio for Tower (was connected when crashed)3) What version of the APM:Copter firmware version are you running?
APM:Copter V3.3.3 Quad (acf2e10c) installed from Mission Planner 1.3.37 build 1.1.5917.13431
Frame Type: V, 3DR_Iris+param4) For flight issues, provide your dataflash log.
TheCrashLogAuto Analysis shows the following:
Log File C:/Users/vusal.je/AppData/Local/Temp/tmp7F6E.tmp.log
Size (kb) 5888.9365234375
No of lines 72399
Duration 0:07:56
Vehicletype ArduCopter
Firmware Version V3.3.3
Firmware Hash acf2e10c
Hardware Type
Free Mem 0
Skipped Lines 0Test: Autotune = NA -
Test: Balance/Twist = NA -
Test: Brownout = GOOD -
Test: Compass = FAIL - Large change in mag_field (49.27%)
Max mag field length (590.26) > recommended (550.00)Test: Dupe Log Data = GOOD -
Test: Empty = GOOD -
Test: Event/Failsafe = FAIL - ERRs found: FS_BATT CRASH FS_THR
Test: GPS = GOOD -
Test: IMU Mismatch = FAIL - Check vibration or accelerometer calibration. (Mismatch: 3.45, WARN: 0.75, FAIL: 1.50)
Test: Parameters = GOOD -
Test: PM = NA -
Test: Pitch/Roll = NA -
Test: Thrust = NA -
Test: VCC = GOOD -Looking forward to getting any clarifications that caused the crash.
Regards,
Vusal
Posts: 4
Participants: 3