Adjust battery voltage colours in RobotInfo widget

[itsarune]

Description of the task

The battery voltage is displayed when running Thunderscope near each robot. We can see this widget with ./tbots.py run thunderscope_main --run_diagnostics --interface {network_interface} (if you are not in the mezzanine, you can still run this if you also pass in the --disable_communication flag).

The widget changes colours to highlight the status of the batteries but at Robocup, we noticed that the colour of the bars didn't reflect the status of the batteries that well.

Improve the implementation of the ColourProgressBar to have better control of the battery shade and set the appropriate thresholds in the RobotInfo widget..

We expect that battery progress bar to be fully charged at 24.4V and fully red once below 22.2 V (nominal voltage of the batteries).

Acceptance criteria

• Improve the threshold controls for the ColourProgressBar
• Improve battery voltage thresholds for better colour shading
• Test with robots and see if the widget shows sensible results after the changes

Blocked By