Respondida
MQTT subscription via Nodered connected but no data
The MQTT subscription service was purged and restarted today just after 1 p.m, and is now working as expected. No messages sent ...

casi 3 años hace | 0

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MQTT subscription via Nodered connected but no data
We had a reset of the system on Friday. Can you please try again and let us know if you are still having this issue today?

casi 3 años hace | 0

Respondida
TimeControl (ThingSpeak) stopped running
TimeControls are working fine as of May 8 12:45 UTC. If you continue to see missing TimeControls, please comment here.

casi 3 años hace | 1

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How i can change time zone on graphics in MATLAB?
Here is one suggestion: https://www.mathworks.com/support/search.html/answers/499985-change-matlab-visualization-timezone.html?...

casi 3 años hace | 0

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Bulk update with thingSpeakWrite to a specified field
myDates=datetime(2023,1,1):days(1):datetime(2023,1,10) nullVec=string.empty(10,0); myNums=1:10; myTimeTable=table(myDates',nu...

casi 3 años hace | 0

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Respondida
Cannot get arduino voltage data to upload to Thingspeak
The Uno R3 cannot make HTTP requests without an ethernet or wifi connection. It is not able to send those requests through a USB...

casi 3 años hace | 0

Respondida
Bulk update with thingSpeakWrite to a specified field
Make your data table with the first four columns of null values.

casi 3 años hace | 0

Respondida
Erorr in MATLAB code
I think it is related to the special characters in the field names. Thank you for reporting this, we will look into it further....

casi 3 años hace | 2

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The page is showing login successfull, but it's not showing my channels option in the channels page
Thanks all for reporting. We will look into the issue and post here when we have a solution. EDIT A fix has been submitted an...

casi 3 años hace | 1

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I can't open a channel
We are aware of this issue and working on a fix. Please watch this MATLAB answer for updates when we have them.

casi 3 años hace | 0

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Widgets doesn´t display any values
You are using a comma as a decimal seperator. I'm sorry but ThingSpeak thinks that is string text, and is not converting it to ...

casi 3 años hace | 0

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websend does not transfer data to my thingspeak channel
Have you been able to update your channel using the web browser address bar? You can find the write data fromat on the api keys...

casi 3 años hace | 0

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casi 3 años hace | 1

Respondida
The page is showing login successfull, but it's not showing my channels option in the channels page
You may have to review you cookie resrictions. MathWorks login does require some for login. Did this effect start recently? Ca...

casi 3 años hace | 0

Respondida
The page is showing login successfull, but it's not showing my channels option in the channels page
Can you try logging in on a different device or system? If that is successful, I recommend you sign out (on the original system ...

casi 3 años hace | 0

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Process an image sent to Thingspeak
Right now the data is in an area that is not publicly accessible. We are working to develop the capacity to read the data into a...

casi 3 años hace | 0

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Where is storage image data on Thingspeak?
Right now the data is in an area that is not publicly accessible. We are working to develop the capacity to read the data into a...

casi 3 años hace | 0

Respondida
storing data on Thinkspeak
Are you writing from a device or from an instance of MATLAB? From a device, you should use the write data APIor MQTT publish....

casi 3 años hace | 0

Respondida
Widgets doesn´t display any values
The widget isnt showing any value because the value of field1 in your channel is null. When you write only to field 2 in an upd...

casi 3 años hace | 0

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Connect vibration sensor to synchronous machine
There is a ThingSpeakWrite block available in Simulink. You can use this directly from a model or you can deploy it to hardware ...

casi 3 años hace | 0

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Delta PLC to Thingspeak Interfacing
If your PLC has an internet conntection, you can use the HTTP Rest API for write data or you can write with MQTT publish via the...

casi 3 años hace | 0

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No connection. Micro:bit IoT kit to Thingspeak
Do you know anyway to expose what the steps in the make code or the ESP firmware are doing? I know how to connect an ESP8266 di...

casi 3 años hace | 0

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https://api.thingspeak.com/channels/<channel_id>/bulk_update.json
The format requirements for bulk update are farily complex. Have you followed all the steps in the bulk write documentation exa...

casi 3 años hace | 0

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How can I Deploy Thingspeak?
Each device should have its own channel. You can use the method I described above if you want the device to create a channel, o...

casi 3 años hace | 0

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Setting x axis to 8 hours
I would consider creating a custon MATLAB visualization where you can fix the x axis use xlim( [ begin end]). Alternatively, yo...

casi 3 años hace | 0

Discussion

Still haven't found what you are looking for? Try the grouped search - now with a videos group.
If you use MATLAB online, you might already know about the advanced search feature that groups your results into the top suggest...

casi 3 años hace | 8

Discussion

casi 3 años hace | 0

Respondida
How to use use app designer to get the first data of any field in ThingSpeak
Have a look at the read last field api endpoint.The returned data includes the timestamp. To use the API in app designer, use w...

casi 3 años hace | 0

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How to clear all data of one field in ThingSpeak in app designer
There are no selective delete operations available. You can download the data, clear the channel and re-upload the data of inter...

casi 3 años hace | 0

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No connection. Micro:bit IoT kit to Thingspeak
Can you try updating your channel with your browser address bar? Use the format shown on the API keys tab of your channel. Th...

casi 3 años hace | 0