Telemetry Widget Display Modes
MeshMonitor's telemetry widgets support three display modes for viewing node sensor data: Chart, Gauge, and Numeric. You can switch between modes on a per-widget basis, and your preference is saved automatically per node and metric type.
Overview
Telemetry widgets appear in the Node Details view and display time-series data reported by Meshtastic nodes — including battery level, temperature, humidity, voltage, pressure, and others. Each widget has its own mode toggle, so you can show battery as a gauge while keeping temperature as a chart, for example.
Switching Display Modes
Each widget header contains a three-button mode toggle group:
| Button | Label | Mode |
|---|---|---|
~ | Chart | Line/area chart of historical values |
⊙ | Gauge | Radial gauge showing the latest value |
# | Numeric | Large numeric readout of the latest value |
Click any button to switch that widget to the corresponding mode. Your selection is saved to browser local storage and restored on your next visit.
Chart Mode
The default mode. Displays a time-series line chart of all recorded values for the metric. Use this mode when you want to see trends and history over time.
- X-axis shows time; Y-axis shows the metric value
- Hover over the chart to see exact values at a point in time
- If Solar Monitoring is enabled and the metric is power-related, a translucent solar production overlay may appear
- Export CSV downloads the plotted series — in display units, with solar or Paxcounter columns included when present. Available on both node telemetry charts and Dashboard favorite charts.
Gauge Mode
Displays the most recent value on a radial arc gauge. Use this mode when you want a at-a-glance status view, similar to a dashboard instrument.
Reading the Gauge
- The colored arc fills from the left (minimum) to the right (maximum) proportional to the current value
- The current value is shown in large text at the center
- The unit label appears just below the value
- The timestamp of the last reading is shown at the bottom of the gauge
- Min and max labels appear at the ends of the arc
Configuring the Range
Below the gauge, two editable number inputs let you set the minimum and maximum scale for that gauge:
[ min ] ─── [ max ]Type a new value in either field and press Tab or click away to apply it. The range is saved to browser local storage per node and per metric type.
Default ranges by metric type:
| Metric | Default Min | Default Max |
|---|---|---|
| Battery Level | 0 | 100 |
| Temperature | -20 | 50 |
| Humidity | 0 | 100 |
| Voltage | 0 | 5 |
| Pressure | 950 | 1050 |
| All others | 0 | 100 |
If the current value falls outside the configured range, the gauge arc will be fully empty (below min) or fully filled (above max) — the value is clamped visually but always displayed accurately in the center text.
Numeric Mode
Displays only the latest value as a large number. Use this mode when you want maximum readability with minimal screen space, or when you are monitoring a single metric closely.
- The value is displayed in the widget's accent color
- Integer values are shown without decimal places; non-integer values are shown with two decimal places
- The unit label appears to the right of the value
- The timestamp of the last reading is shown below in a smaller font
Persistence
All mode and range preferences are stored in your browser's local storage. They are:
- Per node: changing the gauge range for Battery Level on node A does not affect node B
- Per metric type: each metric (temperature, humidity, etc.) stores its mode and range independently
- Per browser: preferences are not synced across devices or users
To reset a widget's mode, click the ~ (Chart) button. To reset a gauge range, type in the desired values in the min/max inputs.
Clean Telemetry Outliers
A faulty sensor can log a spike that flattens the rest of a chart. Clean outliers removes those readings and keeps the rest of the history. Only admins see it.
Where to find it:
- In a telemetry chart's menu, choose Clean outliers… to check one node and one metric.
- In Settings → Danger Zone, click Clean outliers… to check every node on one source for one metric.
Criteria (use either or both):
- Auto-detect outliers: removes a reading that sits more than k median absolute deviations (MAD) from the median of that node's series. A higher k removes less. k runs from 2 to 20 and defaults to 6. MeshMonitor skips a series with fewer than 10 readings, or one where most readings share a single value.
- Remove values below / above: optional bounds. They use stored values, so temperature is in °C.
Steps:
- Set the criteria and click Preview. The preview lists the readings that would go, with the reason for each, and shows the series median.
- Click Delete N readings… and confirm. Deletion is permanent.
If telemetry changed after the preview, MeshMonitor asks you to run the preview again. Each purge is written to the audit log.
Limitations
- Gauge and Numeric modes only display the most recent data point. If no data has been received, the widget remains empty.
- Gauge and Numeric modes do not show historical data — switch to Chart mode to view trends.
- Range configuration is only available in Gauge mode. The inputs are not shown in Chart or Numeric mode.