Virtuino Forum
Settings for value readings - Printable Version

+- Virtuino Forum (https://virtuino.com/forum)
+-- Forum: Virtuino (https://virtuino.com/forum/forumdisplay.php?fid=1)
+--- Forum: Virtuino IoT (https://virtuino.com/forum/forumdisplay.php?fid=2)
+--- Thread: Settings for value readings (/showthread.php?tid=117)



Settings for value readings - JCJunior - 05-28-2022

Dear,

Is there any example of how to configure the MQTT variables for data viewing?
The topic I'm reading returns the following JSON:


{
  "results" : [ {
    "name" : "Temperatura",
    "value" : 24,
    "timestamp" : 1653760447,
    "description" : "",
    "unit" : "°C"
  } ]
}


How do I configure the variable to read the temperature value?


RE: Settings for value readings - iliaslamprou - 05-29-2022

Hi,
I am sorry, I don't have a tutorial yet.
It is very easy to do it.

I have uploaded your json text to the hiveMQ broker to the topic: virtuino_test
1. Create a new project
2. Add the default Virtuino MQTT connection to the broker HiveMQ
3. Enter the sub topic: virtuino_test
4. Go to the broker variables. Select the variable V0. Select as sub topic the "virtuino_test" topic
5. On the field "Value Json path" enter the follow path
results[0]/name

Insert a "Value display" to read the V0
Then connect and check the results

The results[0] returns the first json item of the results array
The name returns the value of the json field name