Vinod

MathWorks

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MATLAB ANALYSIS run Successfully on ThingSpeak, BUT always generates Server Error 500, so doesn't send email
Here's the code I used to test an alert email. % Send ThingSpeak Alert alertURL = "https://api.thingspeak.com/alerts/send"; ...

6日前 | 0

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Thingspeak - no reading data error code 0
I believe the key is here "...updating the library with WifiS3.h rather than Wifi.h." My guess is the WiFiS3 library is not exac...

12日前 | 0

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Not receiving data from mqtt broker in a public channel
My guess is the public channel has not seen an update since your client connected to it. I just created a public channel (266275...

17日前 | 0

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thingspeak server closing connection immediately
Are you able to publish/subscribe to the channel updates from a different client such as MQTTX ? If that works, I would suggest ...

約2ヶ月前 | 0

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Problem connecting reliably to Thingspeak over Ethernet
As you say, a 301/302 from the ThingSpeak library suggests network connectivity issues. Try using a different WiFi network to se...

2ヶ月前 | 0

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can I use custom libraries (dlls) written for matlab with Thingspeak
If you have the DLLs and MATLAB code calling those DLLs in a git repo, you could have your MATLAB Analysis on ThingSpeak clone t...

2ヶ月前 | 1

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Read and Write in one scatch
Yes. You can combine the examples of reading and writing to have a sketch that reads data from one channel and writes to another...

3ヶ月前 | 0

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why my esp8266 push data to ThingSpeak will always hit -301 response code
As Christopher says, a 301 typically means your device does not have Internet connectivity.

3ヶ月前 | 0

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Message usage reset anniversary date?
It is the anniversary date of you signing up to ThingSpeak. So, if you first created your account on Jul 10,2023, for example, y...

3ヶ月前 | 1

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I am unable to connect MQTT client using Thingspeak in MATLAB.
I believe you are using an older version of MATLAB. You need to use MATLAB R2022a or newer and have a license to the Industrial ...

2年以上前 | 0

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How to download the root certificate from thingspeak.com? I am unable to locate the root certificate that is required to set up the thingspeak broker.
Here are instructions on how you can download the certificate for any website. For ThingSpeak MQTT broker, you can download the ...

2年以上前 | 2

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Cant view my data on thingspeak app
I recommend starting with the example here as a starting point for your code. The ThingSpeak library on Github is to help users ...

2年以上前 | 0

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Connection between Codesys and Thingspeak
From our server logs it looks like the publish and subscribe topics are invalid. Codesys seems to convert the "/" character in t...

2年以上前 | 0

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want to download files from dropbox to a local computer using websave
The MATLAB function on FileExchange is a pure MATLAB solution and does not require you to write Dropbox apps. Please install the...

2年以上前 | 0

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How much data it can store for how long
Please take a look at the ThingSpeak license FAQ that answers your questions.

2年以上前 | 0

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I want to know MQTT API Key
Please read the <https://www.mathworks.com/help/thingspeak/channels-and-charts-api.html documentation> and examples on how to us...

2年以上前 | 0

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Thingspeak 301 Error with NodeMCU (ESP8266) [writing to multiple channels]
I believe this is because of DNS caching somewhere on your end. See this thread for information. Also see this thread, which get...

2年以上前 | 0

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I want to send data to Thingspeak using proteus 8 professional
I think that is a great question for the makers of Proteus 8!

2年以上前 | 1

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I want to send data to ThingSpeak using Arduino
The question title says "I want to send data to ThingSpeak using Arduino", which is answered by the answer here. If you are int...

2年以上前 | 1

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why do I get the error "Problem updating channel. HTTP error code -301" when connecting the esp board and trying to transfer the data to thingspeak
Have you tried a different network than your phone's wifi hotspot? Do you still get 301 status code on that?

2年以上前 | 0

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Can not connect to ThingSpeak MQTT broker using MQTT X Client
If you're connecting over Secure MQTT, you need to use port 8883, not port 1883 as your screenshot shows.

2年以上前 | 0

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can I send the things speak data to a wordpress website?
You can host the ThingSpeak chart inside of your wordpress site. See this blog entry. There are 3rd party plugins also available...

2年以上前 | 1

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MQTT X and thingspeak - lost connection
Here's the settings you need to connect with MQTTX:

2年以上前 | 0

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Migrating my existing ThingSpeak channel to new MQTT server
If you have 2 devices publishing to the same channel, one with the legacy mqtt connection and another with mqtt3 connection, but...

2年以上前 | 0

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I am trying to publish data through desktop MQTT Client, but it's get connected but when I am doing subscribe it says connection lost?
If the connection is being dropped when you attempt to subscribe, it is most likely you are subscribing to an incorrect topic, o...

2年以上前 | 0

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how to embed matlab script in website ?
You may want to look at MATLAB Production Server and MATLAB Web App Server to build something like what you describe.

2年以上前 | 0

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How to send by HTTP method (POST) many values to one field with diferent timestamps?
I think you are looking to collect a bunch of data and upload a number of points in a single POST request. Take a look at this d...

2年以上前 | 0

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Can we create dashboard and shared with a customer in ThingSpeak ? what is count for paid version ?
Take a look at the answer to this question: https://www.mathworks.com/matlabcentral/answers/740952 and this answer as well

2年以上前 | 0

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API call from postman to Matlab.
I think you will find this documentation helpful: https://www.mathworks.com/help/matlab/ref/webread.html

2年以上前 | 0

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Thingspeak : account creation / login issue
There are no known issues at this time. Do you get any errors? Can you share a screenshot of what you see when you try to lo...

2年以上前 | 0

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