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Visualize dive log sensor data with Foxglove

With some simple steps you can visualize dive log data with ease in Foxglove. This is a great tool to play back and visualize control signals and estimated states and other sensor data from the dive.

  1. Download Foxglove here and create an account.
  2. Install the SDK with the cli extra to get the blueye CLI and the .mcap converter: pip install "blueye.sdk[cli]".

  3. Download a dive log from the drone and convert it in one step:

    blueye logs download --latest 1 --mcap

    Already have .bez files on disk? Convert them directly — no drone needed:

    blueye logs convert mydive.bez

  4. Open Foxglove, in the top left menu, click on Open local file, and pick your newly created .mcap-file.

  5. Click on Add panel, and Raw message, or Plot and select the signal you want to display.
  6. Start typing DepthTel.depth.value to get auto-complete on all available messages in the protocol.
  7. You can also get a nice overview of the logged messages with this command: mcap info logfile.mcap in your terminal.

For programmatic access to the log records (the converter is built on the same parser), see LogStream.