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Vinod


MathWorks

208 total contributions since 2011

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Answered
Thingspeak, Analysing within a channel
This is by design -- once the data is recorded for a particular timestamp, the datapoint associated with that timestamp is consi...

3 days ago | 2

| accepted

Answered
How to read data in more than 2 fields in thingspeak?
Your RESTClient can read all 8 fields using the documented API and the lines of code in your application subsequent to the RESTC...

3 days ago | 0

Answered
ThingSpeak Channel Does Not Update Automatically when using ESP8266 with AT Commands and C Programming Language
Have you looked at the examples in the ThingSpeak Communication Library? Specifically, this example might be a useful starting p...

3 days ago | 0

Answered
Error 429 Too many requests
Which API are you using to upload the data? If you are using the update API then you should be able to get the 1 second update r...

7 days ago | 0

| accepted

Answered
ThingHTTP call to Twilio results in "AccountSid or AuthToken was incorrect"
Thanks for sharing your code and the solution in your comment. Looks like you were able to figure out the solution before we co...

7 days ago | 0

| accepted

Answered
How can I show live track of GPS data?
Perhaps this example will provide you a good starting point.

7 days ago | 0

| accepted

Answered
Error in ThingSpeak with Fit Function
This is because you are logging in with two different MathWorks Accounts, each of them have access to a different set of toolbox...

7 days ago | 0

| accepted

Answered
ThingSpeak: Bug in Data Import related to UTC
Thank you for reporting the issue with detailed reproduction steps. We'll looking into resolving this in an upcoming release.

12 days ago | 0

| accepted

Answered
Unable to post to Thingspeak channel
Since your ultimate goal is to get this working on a NodeMCU, I'd recommend starting from the examples in the ThingSpeak Client ...

23 days ago | 0

Answered
Instrument Control Toolbox - Scan for devices without tmtool
Does instrhwinfo not do what you are looking for? Which VISA vendor are you using?

23 days ago | 0

Answered
Failed to load to the server with 400 status
Isn't this the same question as https://www.mathworks.com/matlabcentral/answers/490380

27 days ago | 0

Answered
Will NodeMCU/ESP8266 reliably send data to Thingspeak for months, without my intervention, reboots etc ?
It's difficult to comment on the reliability of your NodeMCU device with your code running on it without knowing it. I'd say you...

1 month ago | 0

Answered
Thingspeak - Expired License message & upload stopped working
It appears you may have ignored an email requiring you link your account to a MathWorks Account before September 2019. Based on ...

1 month ago | 2

Answered
can somebody provide a REAL copy & paste example how to clear a channel?
An example of the HTTP request to clear a channel on https://thingspeak.com using a tool like Postman can be found in the docume...

1 month ago | 0

Answered
My domain is blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
On further investigation, it appears that there is a difference between your AJAX code and the CURL command: AJAX request is: ...

2 months ago | 0

| accepted

Answered
Thingspeak Expiration Date? License Type: Free
I believe <https://thingspeak.com/pages/license_faq the FAQ> answers all your questions. For personal, non commercial projects o...

2 months ago | 1

| accepted

Answered
Thingspeak, change data?
If you want to change the data in a channel, you can clear the channel and re-upload the data. 1) Log in to ThingSpeak and go ...

2 months ago | 0

| accepted

Answered
Can't send data to thingspeak api using GET HTTP
Have you tried using the ThingSpeak library: https://github.com/mathworks/thingspeak-arduino I'd recommend starting with those ...

2 months ago | 0

Answered
Can't upload - free license expired
Can you confirm your account is reactivated?

2 months ago | 0

Answered
Incorrect ThingSpeak update feed error "error_payment_required" status 402 returned
I believe your license was inactivated on account of not linking your legacy ThingSpeak account to a MathWorks account. If you l...

2 months ago | 0

| accepted

Answered
Readmatrix / readtable works on ThingsSpeak ?
If you have access to desktop MATLAB or MATLAB online, you can load the contents of the CSV file in MATLAB and use thingSpeakWri...

2 months ago | 0

Answered
ThingSpeak http error code 0 but data is inserted
The most likely situation is that your device is doing multiple updates within the allowed update rate (every 15s as a free user...

2 months ago | 0

| accepted

Answered
Simple Problem with Pie Chart on Thingspeak using MATLAB Visualization
Does your data have NaN's in the field? You can find this out by exporting the channel data from the 'Data Import/Export' tab of...

2 months ago | 0

Answered
ThingSpeak: missing IPv6 compatibility
It sounds like you're using a ststic IP address in your nodes. Static IP is not recommended for a number of reasons. Would it no...

2 months ago | 0

Answered
update lat, long. Just in order to plot those in a Google Map.
You can update the lat and long fields of the channel. In addition to the 8 fields, there are separate lat, long and elevation f...

2 months ago | 0

Answered
I would like an example of scpi over ethernet to Rigol Instruments using the instrument control toolbox.
I've not tested this as I don't have a Rigol scope, but you should be able to start from here: % Initialize scope. The port num...

2 months ago | 2

Answered
how to handle multiple device ?
Can you describe in more detail your project? How many nodeMCUs do you have? How many sensors per device? What are you doing wit...

3 months ago | 0

Answered
how we store video frames in firebase from matlab?
You might find this documentation helpful: https://www.mathworks.com/help/matlab/import_export/work-with-remote-data.html

3 months ago | 0

Answered
can we store the image from matab to thingspeak?
You might find this documentation page helpful. https://www.mathworks.com/help/matlab/import_export/work-with-remote-data.html...

3 months ago | 0

Answered
3rd Party Cookies
Have you disabled cookies in your browser, specifically, 3rd party cookies? Here are instructions on enabling them: https://di...

3 months ago | 0

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