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Vinod


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MathWorks

300 total contributions since 2011

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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 Tage 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 Tage 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...

12 Tage 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> ...

15 Tage 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...

23 Tage 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...

23 Tage ago | 1

Answered
openstreetmap zoomable map on thingspeak
The functionality to embed a dynamically zoomable open street map on ThingSpeak with user code is not currently available. The d...

23 Tage ago | 0

| accepted

Answered
Using Thingspeak React with "dynamic" channels
My recommendation would be to set up a TimeControl that triggers MATLAB code that reads data across all your channels. Your MATL...

etwa ein Monat ago | 0

Answered
Updating Thingspeak channel - multiple devices at same time
A ThingSpeak channel can be updated at most once a second with a paid license, or once every 15 seconds with a free license. If ...

etwa ein Monat ago | 1

Answered
Error 429 for Bulk Update Data using JSON Document: Too Many Requests
Please refer to the documentation for Bulk Update endpoint, specifically "The number of messages in a single bulk-update is limi...

etwa ein Monat ago | 1

Answered
ThingSpeak MQTT omits first field.
I think it is because you are missing an important separator in your request. Try modifying to asprintf(&data, "?field1=%d&fiel...

etwa ein Monat ago | 0

Channel


MQTTTest

etwa ein Monat ago

Answered
'controlchart' requires Statistics and Machine Learning Toolbox.
To use the controlchart function in MATLAB visualization apps on ThingSpeak, the account you use to log in to ThingSpeak will ne...

etwa 2 Monate ago | 0

Answered
Calculate Dew point Channel 1120609
Can you share your MATLAB code that is doing the dew-point calculation on ThingSpeak? Remember to redact or replace your channel...

etwa 2 Monate ago | 0

Answered
how to send thingspeak data to matlab
thingSpeakRead will get your data from ThingSpeak to MATLAB. Are you using MATLAB on your computer, MATLAB Online, or MATLAB Ana...

2 Monate ago | 0

Answered
How to set the time zone in my account
Log in to ThingSpeak and go to the profile page, edit your timezone to what you want and remember to "Update Profile".

2 Monate ago | 1

Answered
MATLAB Visualizations in ThingSpeak
You can upload your files into your MATLAB Drive for sharing. It will require the user to log in to MATLAB Drive to access it. M...

2 Monate ago | 1

Answered
Update of TS data?
What is the status code you get from ThingSpeak when you update your channel? If you are using the Write Data API and get a HTTP...

2 Monate ago | 0

| accepted

Submitted


Model-Based Design of a SUV Anti-Rollover Control System
Models and literature demonstrating Model Based Design of a SUV Anti-Rollover Control System.

3 Monate ago | 3 downloads |

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Answered
Problem sending GPS Data from TTGO T-Call (ESP32) board to Thingspeak using integrated SIM800L.
Try to strip down the example to the minimum to find the source of your issue. Since this is a build issue, I suspect your toolc...

3 Monate ago | 0

Answered
Arduino built in example "WriteMultipleFields" gets error code -301
Have you made sure you're using the latest version of the library? Are you unable to see channel updates with the examples that ...

3 Monate ago | 0

Answered
How do I get ThingSpeak (Channel ID: 1077109) to update the ThingSpeak page automatically every 2 minutes.
The MATLAB visualization will update if you reload the page or visit it again every 5 minutes.

3 Monate ago | 0

Answered
Send GPIO Status to Thingspeak (Lamp Indicator Widget)
Take a look at this example. You can modify it to show your pump status instead of CPU percent utilization quite easily.

3 Monate ago | 0

Answered
Update channels with Arduino MKR NB 1500 or Dfrobot SIM7600CE-T 4G(LTE) Shield
I'm guessing you're using AT commands to send the data to ThingSpeak. It is likely you will need to modify the AT commands from ...

3 Monate ago | 0

Answered
Thingspeak Server Uptime and Lost Data
The ThingSpeak team has a very high standard for uptime for API servers. Our releases are planned keeping in mind having zero do...

3 Monate ago | 0

Answered
Number of Fields in a Thingspeak Channel
Try going to the Channel's "Settings" tab and enabling the fields. You may not have enabled the fields on the channel, or may ha...

3 Monate ago | 1

Answered
Matlab Analysis won't update my field!
If you want a plot of your values, you need to use a MATLAB visualization and add the output to the view of your channel.

3 Monate ago | 0

Answered
Trend lines and forcasts
Certainly possible to use MATLAB and fit a curve through the data points and project the curve into the future to see where it m...

3 Monate ago | 1

Answered
Location data along fields vs channel settings
The lat-lon of the channel is where the channel is located. The lat-lon of the feed is where the actual feed was measured. To ...

3 Monate ago | 1

| accepted

Answered
Data sent to ThingSpeak only twice
My guess is the RTC is interrupting the network stack during the transmission of data to ThingSpeak. Maybe eliminate the RTC int...

4 Monate ago | 1

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