Sometimes it's really helpful to look at the detailed flight logs to see exactly what's going on with Sprite, and in some cases it's necessary for accurate troubleshooting.  Here's how to do it on your Windows computer:

  1. Remove the payload module from Sprite
  2. Unplug and remove the battery
  3. If you haven't already, download and install Mission Planner on your Windows computer
  4. Connect your vehicle to the computer using the micro USB cable
  1. Open the MissionPlanner software. Wait for Sprite’s LED to go from white to flashing blue.
  2. There is a list of COM ports your computer is “seeing” listed in the top right hand corner of the screen. Note that your Sprite will likely appear on the list as “PX4
    FMU”, so select that.
  3. Check that the ‘baud rate’ listed in the list to the right is displaying 115200.
  4. Click on the CONNECT icon to the right of the drop down lists. A dialog box should open temporarily giving you the status as the computer attempts to connect with Sprite. When Sprite connects, the icon will become green and telemetry will begin to update. (Note this is the same procedure you used to calibrate the compasses.)
  5. Click on Mission Planner’s "Flight Data" screen (arrow 1 below)
  6. On the bottom left, select the “DataFlash Logs” tab (you may have to click the right arrow (2) to reveal the tab) and push the “Download DataFlash Log Via Mavlink” button (arrow 3).
  7. Then, select the log you want to download. Note that the files are listed in chronological order, but the date may not be accurately set.
  8. Save that log to your MissionPlanner/logs directory, in a folder named after the vehicle type, such as QUADCOPTER
  9. When emailing the files to Ascent Support, please be sure to include all of the files related to the date in question.

The simplest analysis is to generate a basic automated report that will highlight common problem areas. For that, click on “Log Analysis” and select a log that you’ve already saved to the MissionPlanner/logs directory. They will be in folders named after the vehicle type, such as QUADCOPTER or ROVER. Once you pick the log you want, it will generate a report that looks like this:

For more detailed analysis, please Google "Mission Planner" and you'll find many powerful ways to analyze everything from the control inputs to the accelerometer reading.