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Vinod


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MathWorks

321 total contributions since 2011

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Answered
Gauge widget refresh phenomenon
I suspect this is on account of a slow internet connection. The gauge needs to make a request back to the server to update its v...

10 days ago | 0

Answered
Read real time data on raspberry PI
Have you looked at the Raspberry Pi Support Package?

16 days ago | 0

Answered
Read realtime data from ThingSpeak
If you are using MATLAB installed on your computer, you can install the MQTT in MATLAB toolbox, and subscribe to the channel you...

16 days ago | 1

Answered
Arduino ESP32 stops posting to ThingSpeak after random times (error -301)
Thank you for trying to eliminate some of the potential issues and posting what you've tried before posting. That certainly help...

23 days ago | 0

Answered
Grafana and Thingspeak API
I have this set up like this and it works: 1) Set up the datasource. In my case, I set up a new JSON API with this URL: https:/...

27 days ago | 1

| accepted

Answered
Inconsistent values on sensor readings
From what I can tell by looking at your channel, the values seem to be within normal variation expected from these sensors. Why ...

27 days ago | 0

Answered
Fast and easy plotting of extensive sets of GPS coordinates stored in ThingSpeak
MATLAB has the ability to write CSV, or more generally text files, in any format of your choice. See this documentation page. So...

1 month ago | 1

Answered
Why I get only the last 36 hours?
To keep the application responsive and have a usable experience on the web site, we limit the number of points retrieved to a ma...

1 month ago | 0

Answered
My device sends "1" every 15min, React "On Data Insertion" when Field=1 doesnt Tweet me more than once, why?
Twitter has checks in place to prevent the exact same tweet from being posted frequently. My understanding is this is to limit o...

1 month ago | 1

Answered
Clear Channel-Button doesn't work
The clear channel is an asynchronous operation. If you have a lot of data in your channel, the clearing can take a while and con...

1 month ago | 2

Answered
Annual usage is capped?
I think this page and this FAQ will answer this and more questions you may have.

2 months ago | 1

| accepted

Answered
Channels not updating since license renewal. Error 404 Payment required message
If you renewed your license after the end date, you likely got a new license number. You need to reassociate your channel to thi...

2 months ago | 0

| accepted

Answered
My Google Gauge is showing blank on thing speak
Why not use the gauge widget? Any particular reason you want the Google gauge, specifically?

2 months ago | 0

Answered
Bug in average calc in API read? (Thingspeak)
A NULL or non-numeric value in a field is "Not a Number" and will be treated as a zero in the averaging in the implementation on...

2 months ago | 1

Answered
Is Thingspeak MQTT reliable?
I just tried this example for a few hours, admittedly it is on a Raspberry Pi, and had reliable results with no "holes" in the d...

2 months ago | 0

Answered
Sending data securely, through thingspeak
ThingSpeak API servers support secure HTTPS and MQTT connections between devices and ThingSpeak. If you are looking for examples...

3 months ago | 1

| accepted

Answered
Determine number of records availble in a ThingSpeak channel
I'd recommend the best solution is to retrieve data based on date range. Again, keep in mind the response will contain at most 8...

3 months ago | 0

Channel


Channel for widget #2 for custom dashboard on Google Sites
Custom dashboard is here: https://sites.google.com/view/mythingspeakdashboard/home

3 months ago

Channel


Channel for widget #1 for custom dashboard on Google Sites
Custom dashboard is here: https://sites.google.com/view/mythingspeakdashboard/home

3 months ago

Answered
Arduino uno + esp8266 as wifi with 2 sensor code failed to send data to Channel
Take a look at my answer to this question.

3 months ago | 0

Answered
Thingspeak (via ESP8622) is not showing any graphical data from 3 Fields.
I strongly recommend using the ThingSpeak library and starting from the examples provided with it.

3 months ago | 0

| accepted

Answered
ThingSpeak not showing any data from my ESP32!
I strongly recommend using the ThingSpeak library and starting from the examples provided with it.

3 months ago | 1

Answered
Get data from API (wio link) into thingspeak channel with free online tools
You can use a MATLAB Analysis app on ThingSpeak which uses WEBREAD to read data from your API and then write it to a ThingSpeak ...

4 months ago | 1

| accepted

Answered
ESP8266 ESP-01 intermittently but regularly returning -301 error
I suspect that your router or internet connectivity gateway is caching DNS entries. This results in the request going to an IP a...

4 months ago | 0

Answered
Bulk update 401. error unauthorized
Nothing has changed on the ThingSpeak end that will cause that. Have a look at the documentation for the bulk_update endpoint. ...

4 months ago | 0

Answered
Not showing the graph in my thingspeak channel
Have you had a look at some of the examples that are part of the ThingSpeak Aruino Library? That would be an excellent starting ...

5 months ago | 1

Answered
Can only access Write API every >15minutes
I suspect something on the device side or the connectivity on the device. Here's how you can confirm: 1) Using your web browser...

5 months ago | 0

| accepted

Answered
Fail to Retrieve channel description
Here's a working Arduino Sketch I have tried on an ESP32. It can be modified as needed for your device. #include <WiFi.h> ...

5 months ago | 0

Answered
Fail to Retrieve channel description
Have you checked your GSM module to see that it still has data capacity? Nothing has changed on ThingSpeak early August that can...

5 months ago | 0

Answered
Selecting specific data to show on Thingspeak graph app
I suspect your MQTT gateway is not formatting the data correctly. Why not directly send the MQTT data to mqtt.thingspeak.com ins...

5 months ago | 1

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