Help with Pixhawk logs after crash

[jfro]

I'm just learning and looking at logs for first time.

Power cut out after 3 minute autonomous flight setup with grid for mapping test. 1st ever autonomous flight for me and this quad. 4s 5000mah gens ace battery.

Have sent logs to 3DR about 1 1/2 days ago but haven't heard back yet. Would be appreciative of some instruction on what to look for in bin log via mission planner on the graphs. It just shows over 3 minutes some spikes which I don't know what I'm looking at.

Here are some of my notes so far.

Very little wind.
Flight was on freshly charged battery and was a little over 3 minutes although I was running checks on flight switch modes and checking other things for a while before launching.


After auto flight over part of a vineyard, Quad flew back to starting point. Was at 25meters. Lowered to 10 meters and held for about 6 seconds.

1. changed to loiter. Rotated quad manually to point to the south.
   
2. Mode change to auto, it started to rise and fly south. This may have been accidently triggered via 2 switches as I was trying to switch stabilize to land. Not intentional to switch to auto.
   
   
3. Mode change to stabilize & lost power......boom Telemetry log showing14.61v 70% when power lost. Battery show 16.33v at start 99% . Power draw during flight was 20-32 amps. No spike or anything showed up before loss of power. Something seems amiss in that I took off with full battery and landed at 14.66 which is 3.65v per cell. Voltage alarm is set at either 3.5 or 3.6 and didn't go off. Have power both to pixhawk from power adapter plus a 5v to the rails. Had about 6-8 flights with just power to rails as power adapter fried and was not supplying power... New power adapter for this flight. Maybe the 3[SUP]rd[/SUP] or 4[SUP]th[/SUP] flight.
   
   
4. Normally get about 12 minutes / flight with this setup although was a different camera and hadn't been flown. Took off gopro and gimbal and put Canon point and shoot on. Felt about same, but didn't weigh it. Quad flew about same so figured they were close in weight.
   
   Battery separated from quad after coming down form about 10m. Couple wires pulled out of voltage alarm so couldn't check till got home and fixes balance connectors. Battery is now reading about around 3.79 to 3.8 on cells.
   
   

Log File 2014-07-24 18-03-13.log
Size (kb) 3013.0302734375
No of lines 40634
Duration 0:03:49
Hardware Type
Free Mem 0
Skipped Lines 0


Test: Brownout = FAIL - Truncated Log? Ends while armed at altitude 9.82m
Test: Compass = PASS - mag_field interference within limits (17.02%)
Max mag field length (559.89) > recommended (550.00)


Test: Dupe Log Data = PASS -
Test: Empty = PASS -
Test: Event/Failsafe = PASS -
Test: GPS = PASS -
Test: Parameters = PASS -
Test: PM = PASS -
Test: Pitch/Roll = PASS -
Test: Underpowered = PASS -
Test: VCC = PASS -


Here is xml log
<?xml version="1.0" encoding="UTF-8"?>
<loganalysis>
<header>
<logfile>C:/Users/jfroom/Desktop/pixhawk crash/2014-07-24 18-03-13.log</logfile>
<sizekb>3013.0302734375</sizekb>
<sizelines>40634</sizelines>
<duration>0:03:49</duration>
<vehicletype>ArduCopter</vehicletype>
<firmwareversion>ArduCopter</firmwareversion>
<firmwarehash></firmwarehash>
<hardwaretype></hardwaretype>
<freemem>0</freemem>
<skippedlines>0</skippedlines>
</header>
<params>
<param name="INS_ACC2SCAL_X" value="1.014389" />
<param name="INS_MPU6K_FILTER" value="0.0" />
<param name="GPS_HDOP_GOOD" value="200.0" />
<param name="RC1_DZ" value="30.0" />
<param name="THR_ACCEL_IMAX" value="500.0" />
<param name="SR0_EXT_STAT" value="2.0" />
<param name="SR1_POSITION" value="3.0" />
<param name="FS_THR_VALUE" value="1094.0" />
<param name="INS_GYR2OFFS_X" value="-0.024896390000000001" />
<param name="MNT_STAB_ROLL" value="0.0" />
<param name="SIMPLE" value="0.0" />
<param name="RC9_TRIM" value="1500.0" />
<param name="RC6_REV" value="1.0" />
<param name="SONAR_GAIN" value="0.80000000000000004" />
<param name="FLTMODE6" value="6.0" />
<param name="SR0_RAW_CTRL" value="2.0" />
<param name="BRD_PWM_COUNT" value="4.0" />
<param name="LOITER_LAT_D" value="0.0" />
<param name="MNT_STAB_PAN" value="0.0" />
<param name="MNT_ANGMIN_TIL" value="-4500.0" />
<param name="RC7_MAX" value="1934.0" />
<param name="THR_ACCEL_D" value="0.0" />
<param name="RC6_DZ" value="0.0" />
<param name="OF_PIT_I" value="0.5" />
<param name="INS_PRODUCT_ID" value="5.0" />
<param name="FENCE_ENABLE" value="0.0" />
<param name="ACRO_BAL_ROLL" value="1.0" />
<param name="COMPASS_LEARN" value="0.0" />
<param name="SONAR_ENABLE" value="0.0" />
<param name="INS_ACC2OFFS_Y" value="1.152741" />
<param name="INAV_TC_Z" value="5.0" />
<param name="SYSID_MYGCS" value="253.0" />
<param name="RC6_MAX" value="1934.0" />
<param name="RC6_FUNCTION" value="0.0" />
<param name="ACRO_TRAINER" value="2.0" />
<param name="SYSID_SW_MREV" value="120.0" />
<param name="BATT_VOLT_PIN" value="2.0" />
<param name="SYSID_SW_TYPE" value="10.0" />
<param name="OF_RLL_IMAX" value="100.0" />
<param name="ANGLE_RATE_MAX" value="18000.0" />
<param name="OF_RLL_D" value="0.12" />
<param name="RC2_DZ" value="30.0" />
<param name="WP_YAW_BEHAVIOR" value="2.0" />
<param name="MNT_MODE" value="0.0" />
<param name="FENCE_ALT_MAX" value="100.0" />
<param name="RC2_TRIM" value="1513.0" />
<param name="ARMING_CHECK" value="1.0" />
<param name="RC12_MAX" value="1900.0" />
<param name="THR_ACCEL_I" value="1.458" />
<param name="RC9_DZ" value="0.0" />
<param name="RC10_TRIM" value="1500.0" />
<param name="FS_BATT_VOLTAGE" value="10.5" />
<param name="TUNE_LOW" value="500.0" />
<param name="GND_ABS_PRESS" value="98540.09" />
<param name="THR_MIN" value="130.0" />
<param name="RTL_LOIT_TIME" value="5000.0" />
<param name="STB_RLL_I" value="0.0" />
<param name="RC7_FUNCTION" value="0.0" />
<param name="RC10_REV" value="1.0" />
<param name="MNT_RC_IN_TILT" value="0.0" />
<param name="SONAR_TYPE" value="0.0" />
<param name="STB_RLL_P" value="11.25" />
<param name="GPSGLITCH_ENABLE" value="1.0" />
<param name="RATE_RLL_IMAX" value="500.0" />
<param name="RC5_REV" value="1.0" />
<param name="SR1_RC_CHAN" value="2.0" />
<param name="BATT_VOLT_MULT" value="10.10101" />
<param name="RC1_REV" value="1.0" />
<param name="THR_RATE_IMAX" value="300.0" />
<param name="COMPASS_OFS2_X" value="25.99502" />
<param name="AHRS_GPS_GAIN" value="1.0" />
<param name="COMPASS_MOT2_Z" value="0.0" />
<param name="RATE_PIT_I" value="0.087500030000000006" />
<param name="COMPASS_EXTERNAL" value="1.0" />
<param name="LOITER_LON_D" value="0.0" />
<param name="OF_RLL_P" value="2.5" />
<param name="CH8_OPT" value="0.0" />
<param name="RC4_REV" value="1.0" />
<param name="MAG_ENABLE" value="1.0" />
<param name="RC3_DZ" value="30.0" />
<param name="PILOT_VELZ_MAX" value="250.0" />
<param name="CAM_SERVO_OFF" value="1100.0" />
<param name="INS_GYROFFS_X" value="-0.0077562430000000003" />
<param name="STB_YAW_IMAX" value="0.0" />
<param name="RC5_TRIM" value="1533.0" />
<param name="FLTMODE1" value="2.0" />
<param name="INS_GYROFFS_Y" value="0.01971811" />
<param name="INS_GYROFFS_Z" value="-0.0041134329999999997" />
<param name="MNT_ANGMIN_PAN" value="-4500.0" />
<param name="FENCE_MARGIN" value="2.0" />
<param name="SR0_RAW_SENS" value="2.0" />
<param name="SR0_RC_CHAN" value="2.0" />
<param name="AHRS_RP_P" value="0.10000000000000001" />
<param name="HLD_LON_IMAX" value="0.0" />
<param name="HLD_LAT_P" value="1.0" />
<param name="RC3_REV" value="1.0" />
<param name="INS_GYR2OFFS_Z" value="-0.005200479" />
<param name="AHRS_ORIENTATION" value="0.0" />
<param name="RELAY_PIN3" value="-1.0" />
<param name="FLTMODE5" value="3.0" />
<param name="RATE_PIT_D" value="0.012500000000000001" />
<param name="FRAME" value="1.0" />
<param name="RC1_MAX" value="1934.0" />
<param name="RC2_REV" value="1.0" />
<param name="RC3_MAX" value="1934.0" />
<param name="CIRCLE_RADIUS" value="10.0" />
<param name="RC11_DZ" value="0.0" />
<param name="HLD_LAT_I" value="0.0" />
<param name="ACRO_YAW_P" value="4.5" />
<param name="RC11_TRIM" value="1500.0" />
<param name="RC9_MAX" value="1900.0" />
<param name="OF_PIT_D" value="0.12" />
<param name="COMPASS_USE" value="1.0" />
<param name="FS_GCS_ENABLE" value="0.0" />
<param name="SR2_PARAMS" value="0.0" />
<param name="MNT_RC_IN_ROLL" value="0.0" />
<param name="FENCE_RADIUS" value="150.0" />
<param name="RCMAP_YAW" value="4.0" />
<param name="RC9_REV" value="1.0" />
<param name="MNT_JSTICK_SPD" value="0.0" />
<param name="CAM_SERVO_ON" value="1300.0" />
<param name="RC5_MIN" value="1198.0" />
<param name="RC2_MAX" value="1934.0" />
<param name="RELAY_PIN" value="54.0" />
<param name="RSSI_PIN" value="-1.0" />
<param name="RC1_MIN" value="1094.0" />
<param name="INAV_TC_XY" value="2.5" />
<param name="SR1_PARAMS" value="0.0" />
<param name="SUPER_SIMPLE" value="0.0" />
<param name="RC8_MAX" value="1934.0" />
<param name="RC11_REV" value="1.0" />
<param name="LOITER_LAT_I" value="0.028199999999999999" />
<param name="AHRS_TRIM_Y" value="0.00059802" />
<param name="SR1_EXTRA2" value="10.0" />
<param name="RC12_MIN" value="1100.0" />
<param name="AHRS_GPS_MINSATS" value="6.0" />
<param name="BATT_AMP_OFFSET" value="0.0" />
<param name="RC8_REV" value="1.0" />
<param name="RC12_TRIM" value="1500.0" />
<param name="INS_ACCSCAL_X" value="0.99930629999999998" />
<param name="INS_ACCSCAL_Y" value="1.004468" />
<param name="INS_ACCSCAL_Z" value="0.98437090000000005" />
<param name="RC4_MIN" value="1094.0" />
<param name="MNT_CONTROL_Z" value="0.0" />
<param name="CAM_DURATION" value="10.0" />
<param name="RC1_TRIM" value="1514.0" />
<param name="RC9_MIN" value="1100.0" />
<param name="RC3_TRIM" value="1094.0" />
<param name="SR0_PARAMS" value="0.0" />
<param name="WP_TOTAL" value="15.0" />
<param name="RC10_FUNCTION" value="0.0" />
<param name="MNT_CONTROL_X" value="0.0" />
<param name="MNT_CONTROL_Y" value="0.0" />
<param name="SYSID_THISMAV" value="1.0" />
<param name="RC12_FUNCTION" value="0.0" />
<param name="STB_PIT_I" value="0.0" />
<param name="SR0_EXTRA2" value="2.0" />
<param name="GPSGLITCH_RADIUS" value="200.0" />
<param name="STB_PIT_IMAX" value="0.0" />
<param name="COMPASS_OFS_Z" value="52.62003" />
<param name="COMPASS_OFS_Y" value="27.27559" />
<param name="COMPASS_OFS_X" value="-35.1963" />
<param name="RC7_MIN" value="1094.0" />
<param name="LOITER_LON_IMAX" value="400.0" />
<param name="RC8_MIN" value="1094.0" />
<param name="RC10_MAX" value="1900.0" />
<param name="RC_SPEED" value="490.0" />
<param name="LOITER_LAT_P" value="0.84599999999999997" />
<param name="OF_PIT_P" value="2.5" />
<param name="CAM_TRIGG_DIST" value="0.0" />
<param name="WPNAV_SPEED_UP" value="250.0" />
<param name="HLD_LAT_IMAX" value="0.0" />
<param name="THR_RATE_P" value="5.6" />
<param name="ESC" value="0.0" />
<param name="CH7_OPT" value="0.0" />
<param name="STB_PIT_P" value="11.25" />
<param name="AHRS_YAW_P" value="0.10000000000000001" />
<param name="MNT_ANGMAX_ROL" value="4500.0" />
<param name="MOT_TCRV_ENABLE" value="1.0" />
<param name="SR1_EXTRA1" value="10.0" />
<param name="SR2_RAW_SENS" value="0.0" />
<param name="SR2_RC_CHAN" value="0.0" />
<param name="RC6_MIN" value="1094.0" />
<param name="COMPASS_OFS2_Z" value="36.03954" />
<param name="RELAY_PIN4" value="-1.0" />
<param name="RSSI_RANGE" value="5.0" />
<param name="AHRS_TRIM_Z" value="0.0" />
<param name="COMPASS_MOT2_X" value="0.0" />
<param name="FLTMODE4" value="6.0" />
<param name="RTL_ALT_FINAL" value="0.0" />
<param name="RATE_RLL_P" value="0.1075" />
<param name="MNT_ANGMIN_ROL" value="-4500.0" />
<param name="SR0_EXTRA1" value="2.0" />
<param name="LOG_BITMASK" value="-22530.0" />
<param name="AHRS_GPS_DELAY" value="1.0" />
<param name="RC11_FUNCTION" value="0.0" />
<param name="HLD_LON_P" value="1.0" />
<param name="RCMAP_ROLL" value="1.0" />
<param name="CAM_TRIGG_TYPE" value="0.0" />
<param name="FLTMODE2" value="5.0" />
<param name="RC7_TRIM" value="1094.0" />
<param name="WPNAV_SPEED_DN" value="150.0" />
<param name="THR_ALT_IMAX" value="300.0" />
<param name="COMPASS_MOTCT" value="0.0" />
<param name="HLD_LON_I" value="0.0" />
<param name="LOITER_LON_I" value="0.028199999999999999" />
<param name="SR2_EXTRA2" value="0.0" />
<param name="SR2_POSITION" value="0.0" />
<param name="MNT_NEUTRAL_Z" value="0.0" />
<param name="RTL_ALT" value="1500.0" />
<param name="MNT_NEUTRAL_X" value="0.0" />
<param name="MNT_NEUTRAL_Y" value="0.0" />
<param name="RC8_DZ" value="0.0" />
<param name="OF_PIT_IMAX" value="100.0" />
<param name="MOT_SPIN_ARMED" value="70.0" />
<param name="RC11_MAX" value="1900.0" />
<param name="RC7_DZ" value="0.0" />
<param name="RC8_FUNCTION" value="0.0" />
<param name="WPNAV_SPEED" value="500.0" />
<param name="RATE_YAW_P" value="0.19" />
<param name="SERIAL2_BAUD" value="57.0" />
<param name="RATE_PIT_IMAX" value="500.0" />
<param name="THR_MID" value="445.0" />
<param name="INS_ACC2SCAL_Y" value="1.033234" />
<param name="LOITER_LAT_IMAX" value="400.0" />
<param name="FLOW_ENABLE" value="0.0" />
<param name="SERIAL1_BAUD" value="57.0" />
<param name="COMPASS_ORIENT" value="0.0" />
<param name="INS_ACCOFFS_X" value="0.02570279" />
<param name="LOITER_LON_P" value="0.84599999999999997" />
<param name="STB_YAW_I" value="0.0" />
<param name="INS_ACCOFFS_Y" value="-0.17226440000000001" />
<param name="ANGLE_MAX" value="4500.0" />
<param name="INS_ACCOFFS_Z" value="0.2337359" />
<param name="INS_GYR2OFFS_Y" value="-0.0024058759999999999" />
<param name="FS_BATT_MAH" value="0.0" />
<param name="RC10_MIN" value="1100.0" />
<param name="AHRS_WIND_MAX" value="0.0" />
<param name="TELEM_DELAY" value="0.0" />
<param name="STB_YAW_P" value="4.0" />
<param name="WPNAV_LOIT_SPEED" value="500.0" />
<param name="RELAY_PIN2" value="-1.0" />
<param name="SR2_RAW_CTRL" value="0.0" />
<param name="SR2_EXTRA1" value="0.0" />
<param name="MNT_ANGMAX_PAN" value="4500.0" />
<param name="BATT_AMP_PERVOLT" value="18.0018" />
<param name="GND_ALT_OFFSET" value="0.0" />
<param name="SCHED_DEBUG" value="0.0" />
<param name="SR1_EXT_STAT" value="2.0" />
<param name="RCMAP_PITCH" value="2.0" />
<param name="MNT_STAB_TILT" value="0.0" />
<param name="MNT_RC_IN_PAN" value="0.0" />
<param name="FS_THR_ENABLE" value="0.0" />
<param name="RC9_FUNCTION" value="0.0" />
<param name="INS_ACC2OFFS_X" value="1.099455" />
<param name="FS_GPS_ENABLE" value="1.0" />
<param name="STB_RLL_IMAX" value="0.0" />
<param name="CIRCLE_RATE" value="20.0" />
<param name="INS_ACC2SCAL_Z" value="0.98605609999999999" />
<param name="RC8_TRIM" value="1556.0" />
<param name="RC5_MAX" value="1533.0" />
<param name="SR1_EXTRA3" value="2.0" />
<param name="THR_ALT_P" value="1.2162" />
<param name="TRIM_THROTTLE" value="638.0" />
<param name="TUNE_HIGH" value="1500.0" />
<param name="SR1_RAW_SENS" value="2.0" />
<param name="BATT_MONITOR" value="4.0" />
<param name="RATE_RLL_I" value="0.1075" />
<param name="RC4_MAX" value="1934.0" />
<param name="FLTMODE3" value="0.0" />
<param name="COMPASS_AUTODEC" value="0.0" />
<param name="WPNAV_RADIUS" value="200.0" />
<param name="SR0_EXTRA3" value="2.0" />
<param name="AHRS_GPS_USE" value="1.0" />
<param name="RC4_DZ" value="40.0" />
<param name="THR_MAX" value="1000.0" />
<param name="RC10_DZ" value="0.0" />
<param name="THR_RATE_I" value="0.0" />
<param name="THR_ALT_I" value="0.0" />
<param name="SR0_POSITION" value="2.0" />
<param name="THR_ACCEL_P" value="0.72899999999999998" />
<param name="THR_RATE_D" value="0.0" />
<param name="AHRS_TRIM_X" value="0.00059802" />
<param name="OF_RLL_I" value="0.5" />
<param name="BATT_CAPACITY" value="5000.0" />
<param name="RCMAP_THROTTLE" value="3.0" />
<param name="ACRO_RP_P" value="4.5" />
<param name="RC6_TRIM" value="1207.0" />
<param name="MOT_TCRV_MAXPCT" value="93.0" />
<param name="COMPASS_OFS2_Y" value="-3.469154" />
<param name="WP_INDEX" value="0.0" />
<param name="ACRO_BAL_PITCH" value="1.0" />
<param name="RC11_MIN" value="1100.0" />
<param name="COMPASS_MOT2_Y" value="0.0" />
<param name="LAND_SPEED" value="50.0" />
<param name="RC12_DZ" value="0.0" />
<param name="RATE_RLL_D" value="0.0099999990000000007" />
<param name="SR2_EXT_STAT" value="0.0" />
<param name="RATE_YAW_D" value="0.0" />
<param name="RC3_MIN" value="1094.0" />
<param name="AHRS_COMP_BETA" value="0.10000000000000001" />
<param name="TUNE" value="0.0" />
<param name="BATT_CURR_PIN" value="3.0" />
<param name="GPSGLITCH_ACCEL" value="1000.0" />
<param name="MOT_TCRV_MIDPCT" value="52.0" />
<param name="GND_TEMP" value="35.0839" />
<param name="FENCE_ACTION" value="1.0" />
<param name="COMPASS_MOT_Y" value="0.0" />
<param name="COMPASS_MOT_X" value="0.0" />
<param name="COMPASS_MOT_Z" value="0.0" />
<param name="RC12_REV" value="1.0" />
<param name="RC2_MIN" value="1094.0" />
<param name="FENCE_TYPE" value="3.0" />
<param name="RC5_DZ" value="0.0" />
<param name="RATE_YAW_IMAX" value="800.0" />
<param name="SR2_EXTRA3" value="0.0" />
<param name="FS_BATT_ENABLE" value="0.0" />
<param name="WPNAV_ACCEL" value="100.0" />
<param name="SR1_RAW_CTRL" value="2.0" />
<param name="RATE_PIT_P" value="0.087500030000000006" />
<param name="RATE_YAW_I" value="0.017999999999999999" />
<param name="COMPASS_DEC" value="-0.081739590000000001" />
<param name="RC5_FUNCTION" value="0.0" />
<param name="RC4_TRIM" value="1515.0" />
<param name="RC_FEEL_RP" value="61.0" />
<param name="MNT_RETRACT_X" value="0.0" />
<param name="MNT_RETRACT_Y" value="0.0" />
<param name="MNT_RETRACT_Z" value="0.0" />
<param name="MNT_ANGMAX_TIL" value="4500.0" />
<param name="RC7_REV" value="1.0" />
<param name="INS_ACC2OFFS_Z" value="1.202531" />
</params>
<results>
<result>
<name>Brownout</name>
<status>FAIL</status>
<message>Truncated Log? Ends while armed at altitude 9.82m</message>
<data>(test data will be embeded here at some point)</data>
</result>
<result>
<name>Compass</name>
<status>PASS</status>
<message>mag_field interference within limits (17.02%)
Max mag field length (559.89) &gt; recommended (550.00)
</message>
</result>
<result>
<name>Dupe Log Data</name>
<status>PASS</status>
<message></message>
</result>
<result>
<name>Empty</name>
<status>PASS</status>
<message></message>
</result>
<result>
<name>Event/Failsafe</name>
<status>PASS</status>
<message></message>
</result>
<result>
<name>GPS</name>
<status>PASS</status>
<message></message>
</result>
<result>
<name>Parameters</name>
<status>PASS</status>
<message></message>
</result>
<result>
<name>PM</name>
<status>PASS</status>
<message></message>
</result>
<result>
<name>Pitch/Roll</name>
<status>PASS</status>
<message></message>
</result>
<result>
<name>Underpowered</name>
<status>PASS</status>
<message></message>
</result>
<result>
<name>VCC</name>
<status>PASS</status>
<message></message>
</result>
<result>
<name>Vibration</name>
<status>UNKNOWN</status>
<message>No stable LOITER log data found</message>
</result>
</results>
</loganalysis>

 

[dazzab]

Do you know that there is a specific forum at http://ardupilot.com/forum/ for assistance with log analysis? Nothing wrong with asking here as well but that forum is monitored by 3DR staff and some of the developers as well. I'm just checking that you are aware of it in case you want to try it out.

 

[jfro]

Do you know that there is a specific forum at http://ardupilot.com/forum/ for assistance with log analysis? Nothing wrong with asking here as well but that forum is monitored by 3DR staff and some of the developers as well. I'm just checking that you are aware of it in case you want to try it out.

Thanks, I have a account on that forum. I sent the logs to 3DR and still waiting there opinion on the logs. I also posted a question there a few months back under the Pixhawk forum and got no answers. Generally, get something here.

So far, it appears I may have had a brownout although my battery seems fine and had 3.8v / cell left. I also had power from a 5v supply to the rails as backup which I had been flying for a while. I did replace their little power module with a 3rd party and although that so far appears ok, it could be the problem the the 5v to the rails should have still been there.

Biggest disappointment is that the GPS 4 wire cable pulled out of the Pixhawk taking the socket with it and the circuit board is not repairable. So I now have a Pixhawk to use without GPS. When I got the Pixhawk, I did not like their connections from the start. Now I really don't like em.....

I listened to my flight log over and over. It appears I did what I thought. After pause on the rtl, I put it in loiter and turned it about 145 degrees so it was pointing south and away from me. I then put it to stabilize to land manually (which I think had to go through auto on the switch pattern) as I have 2 switch setup for a 6 flight mode setup. Even though it was in auto for probably less than 1 second, it did try to start flying the mission which means it went a few feet to the south before it got the stabilize signal. At that point, it stopped and came down. I don't know what I did with the throttle, so would like to see what the logs say there. Just don't know where to look.

Anyway, it may be some type of power cut out, just not sure and hope to find out soon.

Thanks for the suggestion.