Apm 2.6 going crazy when i put loiter or RTL

Hi I have constructed a S500 quadcopter it fly well and all but when I come to put loiter or RTL it gets crazy and begins to vibrate a drift away … any help ?

Please provide tlogs and/or data flash logs to help troubleshoot your issue.
Wiki: http://copter.ardupilot.com/wiki/common-downloading-and-analyzing-data-logs-in-mission-planner/

hi this the only folder I new how to download… thank you for the help

Log File C:/Users/M.A.Construction/AppData/Local/Temp/tmp4CC.tmp.log
Size (kb) 391.14453125
No of lines 5275
Duration 0:01:47
Vehicletype ArduCopter
Firmware Version V3.2.1
Firmware Hash 36b405fb
Hardware Type
Free Mem 0
Skipped Lines 0

Test: Autotune = UNKNOWN - No ATUN log data
Test: Balance/Twist = GOOD -
Test: Brownout = GOOD -
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 = GOOD -
Test: IMU Mismatch = UNKNOWN - No IMU log data
Test: Parameters = GOOD -
Test: PM = GOOD -
Test: Pitch/Roll = GOOD -
Test: Thrust = FAIL - Avg climb rate 10.76 cm/s for throttle avg 962
Test: VCC = FAIL - VCC below minimum of 4.6v (4.541v)

Hi guys I still need some help here every time I put the RTL or Loiter switch on my transmitter the quadcopter moves away and begin to kind of bounce in the air and move … I’m not knowing how to fix this issue … please help


I have this issue too ,
Actualy I downgraded to the latest FW version wich my Quad flew RTL without problems , I will compare the params list from before reset and after reloading the 3.1.2 .

On the ground , I have a better HDOP than the 3.1.5 , no more glitch , I will test tomorrow ( if the weather let me go out ), and come back for the update .

How , one thing more : before the downgrade , the Home position when connect the battery didn’t works too , and after the downgrade , it works again … I keep finger crossed :slight_smile: