The dashboard can be viewed by admin users and invited users. The dashboard includes various gauges to display live sensor data values. An example dashboard is shown below.
UrsaLeo Cloud Dashboard (top 3 sensors view)
Use of sensors to measure temperature is very common. The temperature gauge is shown in the first position in the dashboard. This gauge includes a 'Preferences' setting to allow the Admin user to specify conversions (unit of measurement) and calibration formulas for this particular sensor.
- To access Preferences, click on the small Preferences cog in the upper right hand of any dashboard widget
- Only admins have access to this preferences setting. Invited users can only view the data, using the setting specified by the admin
- When a conversion or calibration is set, the Preferences cog will turn blue
This dropdown menu allows you to change from Celsius (default) to Fahrenheit
Unit of Measurement
- This text entry allows the user to specify a custom unit of measurement label.
- This field defaults to 'C' for Celsius and will automatically be set to 'F' for Fahrenheit if the conversion type is selected as 'Celsius' to Fahrenheit'.
Minimum and Maximum
These text fields allow the user to specify the scale range displayed within the temperature widget.
You can alter the min and max values of all sensors by clicking the preference cog in the upper right corner of the widget. Click SAVE to retain values. To return to default values, click RESET TO DEFAULTS.
Careful consideration should be given to measuring the temperature of an object or its ambient environment. Calibration allows the user to adjust the reported sensor value to address issues such as the sensor being located next to a heat source (e.g. the sensor board or other nearby heat sources) or poor accuracy of the individual temperature sensor.
To learn more about accurately measuring temperature, please refer to this White paper from Silicon Labs: Measuring Temperature Accurately with Semiconductor Sensors
Calibration type and Calibration Amount
These two fields work together to enable the user to select a Calibration Type operation (e.g. add, multiply) and a Calibration Amount value to be used by the type operation. For example, to add two degrees to the raw temperature reading, select type = add and amount = 2.
To adjust the raw temperature value negatively, enter a negative value in the Calibration Amount field.