Leaf wetness progress bar with background

Who it’s for

Agronomists, precision farmers, and vineyard managers ask “where does the current leaf wetness sit within the 0–100% scale?” They use this bar on dedicated farm management or field station screens where a background image gives the card a polished look.

What it does

A sensor reading 68% fills the bar to 68% and colors it orange — Wet — displayed over the preset background image. A reading of 5% fills only 5% in blue — Dry.

• Horizontal progress bar that fills proportionally between 0% and 100%
• Color-coded fill that changes across four wetness bands from Dry to Saturated
• Current value label shown alongside the bar
• Decorative background image bundled with the widget, with a white overlay that keeps the text readable
• Shows one sensor’s data; it does not chart trends or show a delta

How to set up

Data keys

Key	Role	Type	Description
leaf	Bar value	Timeseries	Leaf wetness index in %; change the key name to match your device’s telemetry key

The widget ships with a simulated function datasource key labeled humidity, so it draws random values until you point the datasource at a device and rename the key.

To point it at your own device: open the dashboard in edit mode, open the widget’s Datasources, pick the entity or entity alias, and replace the function key with the key your device reports.

If the key has never reported, the bar renders empty.

Value ranges

Range (%)	Level	Color
0–10	Dry	Blue
10–50	Moderate	Orange
50–90	Wet	Orange
90+	Saturated	Red

How to customize

• To swap the background image — open the widget settings and set Background to a different image or switch to a solid color.
• To adjust how much the background shows through — change the Overlay opacity; lower values reveal more of the image, higher values push it further back.
• To use your own wetness thresholds — edit the color ranges; adjust the four default bands to match your crop’s spray thresholds.
• To hide the value label — turn off Show value in the widget settings.
• To hide the entity name subtitle or the timestamp — turn off Show subtitle or Show date.

Tips

• The scale is fixed at 0–100% because leaf wetness sensors output a dimensionless index already normalized to that range. There is no need to adjust Tick max for different sensor types.
• If the background image reduces contrast, raise the Overlay opacity to keep the text readable from a distance.