Logs from the Pioneer

For every dive will the Pioneer will create a new comma-separated-value file where it stores telemetry data such as depth, temperature, etc. These files can be downloaded to your local system where you can plot them or use them however you see fit.

Listing the log files

If your drone has completed 5 dives and you do

from blueye.sdk import Pioneer

p = Pioneer()

print(p.logs)

you should see something like the following lines be printed

Name                        Time                Max depth  Size
ea9add4d40f69d4-00000.csv   24. Oct 2018 09:40  21.05 m    6.3 MiB
ea9add4d40f69d4-00001.csv   25. Oct 2018 10:29  21.06 m    879.2 KiB
ea9add4d40f69d4-00002.csv   31. Oct 2018 10:05  60.69 m    8.5 MiB
ea9add4d40f69d4-00003.csv   31. Oct 2018 12:13  41.68 m    8.4 MiB
ea9add4d40f69d4-00004.csv   02. Nov 2018 08:59  52.52 m    7.8 MiB

The first part of the filename (the part before the -) is the unique ID of your drone and second part is the dive number. In addition we see the start time of the dive, the maximum depth reached, as well as the size of the log file.

Downloading a log file to your computer

When you want to download a log file all you have to do is to call the download() method on the desired log and the file will be downloaded to your current folder.

The download() method takes two optional parameters, output_path and output_name. These specify, respectively, which folder the log is downloaded to and what name it's stored with.

Example: Downloading multiple log files

Downloading multiple log files is solved by a simple Python for-loop. The example below shows how one can download the last 3 logs to the current folder:

from blueye.sdk import Pioneer

p = Pioneer()

for log in p.logs[:-3]:
    log.download()

Example: Adding a prefix to log names

The example code below shows how one can add a simple prefix to all log files when downloading:

from blueye.sdk import Pioneer

p = Pioneer()

prefix = "pre_"

for log in p.logs:
    log.download(output_name=prefix+log.name)