Completely new to ThingsBoard (TB), and quite new to integrations in general, so be gentle. Have though successfully used Losant to display air quality related data.
Data sent from the device consists of a simple string with 8 floats, e.g. “22.38, 34.73, 66.00, 1.00, 3.00, 3.30, 3.40, 3.40”.

I have a Thingsboard CE setup working in a server, all working fine with devices, dashboards, telemetry, etc, but when I want an alarm to indicate the tank percentaje, that has been calculated some nodes before (in the same chain), the value shows as NULL

I have an asset (chemical reactor) with automatic temperature and pH sensors which I am going to connect to ThingsBoard. There is one more parameter (concentration) measured every two hours in a lab. I want the most recent concentration value to appear on dashboard time plots.

I have an asset (chemical reactor) with automatic temperature and pH sensors which I am going to connect to ThingsBoard. There is one more parameter (concentration) measured every two hours in a lab. I want the most recent concentration value to appear on dashboard time plots.

I have an asset (chemical reactor) with automatic temperature and pH sensors which I am going to connect to ThingsBoard. There is one more parameter (concentration) measured every two hours in a lab. I want the most recent concentration value to appear on dashboard time plots.

How do I update multiple attributes on multiple entities on an alias?

How do I update multiple attributer on multiple entities on a alias?

I am developing an IoT device that monitors a proprietary bus that may have one- or more bus participants (but usually more than one). I want to create a Thingsboard Device for my IoT gateway (to monitor health), and an additional Thingsboard Device for each bus participant found on the bus, all of them correlated under a Thingsboard Asset.
My first question is: is this setup considered best practice for this problem? Is there a better architecture?
My second question is: how can I do this procedurally? It is trivial to auto-provision a device, but there seems to be no way to create an asset (only via REST API).

I am using ThingsBoard to manage IoT devices and need to dynamically modify telemetry data received from a device before sending it back to ThingsBoard. Specifically, I need to subtract or add a certain value to a telemetry parameter and then send this value back to the device. I also need to customize an HTML widget, as I cannot use Control Widgets like the RPC Button, Knob Control, or Switch Control to send commands to my devices.

I’m working with Thingsboard and need some assistance with controlling the visibility of widgets based on user roles or specific conditions. Specifically, I want to enable or disable the visibility of certain widgets to particular users. For example, I want only certain users to see a widget that directs to another state with more detailed information about users.( It could be that I group the user and add New Telemetry such as person is true , or add this Telemetry for each user and have an access to this variable from Widget to check the telemetry is true or false )