Digital Gauges Not Refreshing with Telemetry Data

[nitinware]

I am continuously publishing temperature data to a device and I can see the temperature data visible in the device Latest Telemetry tab correctly and it is continuously updating.
When I visualize the same telemetry data on a dashboard using a digital gauge, then the telemetry data is not updating and the Digital gauge looks frozen.
I am attaching the screen shots of both Latest Telemetry tab and the dashboard containing digital gauge, the digital gauge numerical value does not change as per the telemetry data.

Your help is highly appreciated.

Thanks,
Nitin Ware

[adityaba]

@nitinware Will you please share browser logs

[nitinware]

@adityaba - I am using chrome browser and I see these log statements in the browser developer console.

You are using the ngTouch module. 
Angular Material already has mobile click, tap, and swipe support... 
ngTouch is not supported with Angular Material!
(anonymous) @ angular.js:13920
angular.js:13920 <md-backdrop> may not work properly in a scrolled, static-positioned parent container.

[vparomskiy]

Is it possible that you send value using string data type instead of numeric data type?
For example "38.1" instead of 38.1

[nitinware]

@vparomskiy - I am sending the temperature data as string, please check the below python script which I am using to publish telemetry to thingsboard.

Below is a sample message generated by below python script -

{"temperature":"30"}

import paho.mqtt.client as mqtt
from time import sleep
import random

broker="test.mosquitto.org"
topic_pub='v1/devices/me/telemetry'

client = mqtt.Client()

client.username_pw_set("*************")
client.connect('127.0.0.1', 1883, 1)

while True:
    x = random.randrange(30, 40)
    print(x)
    msg = '{"temperature":"'+ str(x) + '"}'
    client.publish(topic_pub, msg)
    sleep(0.1)

[nitinware]

@vparomskiy - I would like to add more information that the Digital Gauge is frozen and not refreshing when it is non-edit mode on dashboard, but when I try to edit the digital gauge then I can see the Digital Gauge values changing background of edit window. I am attaching the gify screen shot of the same.

[vparomskiy]

Thank you for details. You are right, it is a bug in a gauges widget. Updates are visible in this widget, but value not updated properly.
In other widgets, for example in 'charts', it works as expected.

We will fix this.

[Neuromystix]

@vparomskiy Hi. I'm having exactly the same problem with a timeseries flot. When i open the dashboard, the values are refreshed, but stay frozen at that values. And don't refresh with the new ones when i'm in edit mode. Tried in Chromium (RPI) and Firefox, but the problem is the same. To get the new ones, i need to refresh the page or change timewindow value to a different one and update. Same log in develoer console as @nitinware have:
"You are using the ngTouch module.
Angular Material already has mobile click, tap, and swipe support...
ngTouch is not supported with Angular Material!
may not work properly in a scrolled, static-positioned parent container."

[vparomskiy]

This issue already resolved in master, but not released yet.
As a workaround, you can decrease data submission rate. It is reproduced only when submission rate is higher than 1 per 2 seconds.

[Neuromystix]

Ok, i'll wait for the master, not a big deal right now ;)
My submission rate is 20 seconds, so it shouldn't happen. Checked with a timeseries table, also happening.

[vparomskiy]

@Neuromystix also could you write what time window is configured for time series flot. Is it realtime or history?

[Neuromystix]

All widgets was using "dashboard timewindow", with "realtime". Didn't tried to check history. It was a fresh 2.0.3 install, running in a RPi3 which received data from a sensor, each 20 seconds. It was working fine with an old 1.4 version (had some problems with RPi SD card, so i've done a clean install).

[vparomskiy]

Fix already available. Closing this issue.