"m" - number of message

"d" - level sensor internal detector value

"b" -battery level

"t" - temperature

"fuel" - fuel value (in liters if tank calibrationtable was programmed in sensor)

"pv" - percentage of volume

User can only view data but doesn’t have rights to modify dashboards or assets.

We've shown you only the most basic thingsboard features. We recommend that you watch the video on the developer channel and repeat the examples indicated there.

https://www.youtube.com/watch?v=0io1YnQjIwA
https://www.youtube.com/watch?v=mqWEGs1Z2BQ
https://www.youtube.com/watch?v=TyUKx5rNJSs

The system supports embedded programming using Javascript, so you can modify the platform, create your own dashboards and data processing algorithms.

After creating the company, click on the Manage customer users icon and create a user who will log in to the system as a user.

We go through the stage of user activation through a link. Upon completion, we get to the system user screen. There is no access to assets and dashboards yet.

We go back as an Administrator (Tenant user) to the Assets section, select the required assets and click the Assign assets to Customer icon. And choose the company.

Now let's add this information to the dashboard. Go to the dashboard window and add a widget of the Alarm widget type.

In the widget settings, select Alarm source - Entity. And set the alias, describing the objects for notifications - Fuel storages.
New tab will appear on the dashboard.

On the left in the menu, select the Rule chain block and drag it to the algorithm field. We choose a name for the chain - it must match the name of the chain that we want to start. This block is a link to it.

Next, we connect the output of the Message type Switch to the input of the new block.

Select the transmitted data - Post telemetry.It means data from the sensors is transmitted to our chain.

The chain is connected. Now, a check for low fuel balance will be launched as a part of Thingsboard workflow, and, if a new warning is present, will launch the chain for sending an email notification.

If we open the script, we will see that it consists of one line, where the value from the sensors is compared with 10. Thus, the script is triggered if the value from the sensor is <10 and here this value can be changed.

The Low fuel email chain called to send an email notification is very simple and consists of two blocks. The first one describes the content of the message and its headers, the second (SendGrid SMTP) specifies the SMTP server settings. The system default settings can be used, which are configured through the Thingsboard system administrator interface.

For more details on the powerful means of defining events in Thingsboard, read the tutorial. We suggest simply importing ready-made Rule Chains. Download Low fuel and low fuel email chains.

Open Low fuel rule chain in built-in editor.

Alias in this case will include a set of one sensor (Tank # 1 and Tank # 2)

The labels, display of each of the parameters can be changed, as well as the color of the graph.

Now we have a fuel volume and temperature plot.

Here we want to see graphs of the volume of fuel in the tanks. Add a new Charts widget, choose Time series and the type of chart you like the most.

To display the graph, set an alias - all sensor type devices that begin with “Tank”.

Let's create another one dashboard. We want it to open when clicking on the asset icon on the map. And it will display fuel volume information – actual and historic data.
To do this, click on the layers icon at the top left (Manage dashboards states). And create a new state of the dashboard. In the Name field, enter $ {entityName}, in the State id field, create the name of the new dashboard layer - Fuel storage site, i.e. detailed view of the fuel storage area. We do not set the Root state tick - it designates the dashboard layer that is launched by default at startup.

After creating a new dashboard layer, go to the properties of the map widget. In the Actions tab, select the action (Action source), which switches to a new layer - On marker click. We give the action a name - for example, opensite. Select the type of action - navigate to new dashboard state and indicate which dashboard to go to – recently created Fuel storage site. Check the Set entity from widget with the checkbox and save the changes. Now, when you click on the icon on the map, a new widget opens, which is still empty.

After choosing an alias to display on the map, you need to set the asset parameters: its latitude and longitude. To do this, type the latitude text field and press enter, the same with longitude.

On the Advanced tab, you can select an icon to display the asset on the map

You will need to select the data to display on the map. We want to display all our assets on the map. So far, this is one site with fuel tanks, but there will be several of them in the future. This means that the system will have to display all objects. For this, the concept of Alias is used. Let's create the first alias.

Click on the asset and open its properties. Go to the Attributes section and assign field values:
latitude, type Double.
longitude, type Double
Imageurl (http link to image or asset plan) , type String.

Now we need to create a dashboard - an operator interface.
Go to the Dashboards section and click “+”to add new dashboard. We give it a name.