Beantwortet
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...

fast 3 Jahre vor | 0

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

fast 3 Jahre vor | 0

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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....

fast 3 Jahre vor | 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...

fast 3 Jahre vor | 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.

fast 3 Jahre vor | 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 ...

fast 3 Jahre vor | 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...

fast 3 Jahre vor | 0

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fast 3 Jahre vor | 1

Beantwortet
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...

fast 3 Jahre vor | 0

Beantwortet
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 ...

fast 3 Jahre vor | 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...

fast 3 Jahre vor | 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...

fast 3 Jahre vor | 0

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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....

fast 3 Jahre vor | 0

Beantwortet
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...

fast 3 Jahre vor | 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 ...

fast 3 Jahre vor | 0

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Beantwortet
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...

fast 3 Jahre vor | 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...

fast 3 Jahre vor | 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...

fast 3 Jahre vor | 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...

fast 3 Jahre vor | 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...

fast 3 Jahre vor | 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...

fast 3 Jahre vor | 8

Discussion

fast 3 Jahre vor | 0

Beantwortet
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...

fast 3 Jahre vor | 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...

fast 3 Jahre vor | 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...

fast 3 Jahre vor | 0

Kanal

drive lights record test

fast 3 Jahre vor

Beantwortet
Analyzing sensor data on ThingSpeak through the MATLAB Analysis.
You can use the Alerts API to create an alert based on a condition you calculate in MATLAB code.After you apply the bandpass fil...

fast 3 Jahre vor | 0

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No connection. Micro:bit IoT kit to Thingspeak
You seem to have no delay between requests. This will result in you continuously querying the ThingSpeak server, and eventually ...

fast 3 Jahre vor | 0

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Why sometimes daily average shows wrong values?
Two major casues of this are blank values in your field data and timezones. I would have a look at your data using the read API...

fast 3 Jahre vor | 0

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Two accounts simultaneously on the same computer?
Can you tell us more about what you are using multiple licenses for? According the the licensing FAQ, multiple free account...

fast 3 Jahre vor | 0