Hi There
I need a little help reading the telemetry log.
was flying a Y6 using waypoints, the first 3 flights went well and the 4th was a disaster as the Y6 just fell out the sky from about 20 meters.
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Logs
There are a few wiki pages where we talk about how to use the dataflash and tlogs here (http://code.google.com/p/arducopter/wiki/AC2_Datalogging), here (http://code.google.com/p/arducopter/wiki/AC2_Record) and here (http://code.google.com/p/arducopter/wiki/AC2_Logs). The last two pages have videos on them where I go through some of the details so that might be useful...
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Find flight modes in the log browser is a bit difficult. You have to manually scroll through the log to find the modes changing. If you have telemetry you can graph the tlog file within the Flight Data screen under Telemetry Logs. To see flight mode changes you need to click on and graph custom_mode. You can analysis you regular logs using Excel.
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http://copter.ardupilot.com/wiki/downloading-and-analyzing-data-log...
http://copter.ardupilot.com/wiki/common-mission-planner-telemetry-l...
http://copter.ardupilot.com/wiki/common-diagnosing-problems-using-l...
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Basic
ATTITUDE_MED GPS PM CTUN NTUN CMD CURRENT
All
ATTITUDE_FAST ATTITUDE_MED GPS PM CTUN NTUN IMU CMD CURRENT MOTORS OPTFLOW PID COMPASS INAV CAMERA