The new 3DR Solo drone, combined with a GoPro is an amazing platform for mapping applications once you figure out the process to properly geotag images. I’ve pulled together a workflow for you that is relatively straight forward. Note that this does not require the gimbal.
1. Configure your GoPro
Enable the WiFi on your GoPro and connect with the mobile device you’ll be using with Solo. In the settings you need to select the option to set the time on the GoPro, which will sync the GoPro clock to the device. While you are in here, go ahead and configure your capture settings too (I typically do timelapse, 12mp, 1 second interval). Once complete, disable WiFi on the GoPro.
I use the Tower application on Android to automatically generate my aerial surveys and control the Solo. Don’t forget to turn on your GoPro, with WiFi off, before your flight.
3. Pull your TLOG
[Update: It may be easier to get the copy of your TLOG from your Android device where it is copied after flight. See the comments for directories people find these files in]
After your flight, you can turn off the Solo, but leave the controller turned on so we can download the telemetry logs. We are going to transfer the logs using a protocol called SCP (secure copy) from the Solo controller to your computer. First, from your computer, connect to the Sololink Wifi.
If you are on a mac/linux machine, launch Terminal and use this command to copy all logs to your current directory (represented by the final “.”).
scp [email protected]:/log/* .
If you are on a Windows PC, use WinSCP to connect to 10.1.1.1 with username “root”, and copy the files from the /log directory.
The password for the root user is:
You’ll likely end up with several log files from recent flights.
4. Copy your GoPro images to your PC
Just put them wherever you’d like – But don’t alter them in any way yet.
5. Use Mission Planner to GeoTag
On a Windows Machine launch Mission Planner. You can use the telemetry logs tab to replay the logs to verify you have found the correct one. The one named solo.tlog is your last flight, while the numbered ones are previous flights. Change the extensions to .tlog to open in Mission planner.
Once you know which log matches the photos, press Control+F in Mission Planner to open the “secret” tools window. Select “Geo ref images” from the tools list.
Choose your TLOG file and images directory, and select “Time Offset”. If your camera time was set correctly then a “Seconds Offset” of 0 should be close enough.
Press “Pre-Process” and verify that most of your photos match the log times.
Press “GeoTag Images” to Geotag.
That is it! Enjoy!