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MathWorks

Last seen: Today |  Attivo dal 2011

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Risposto
Issue with TimeControls getting stuck
We'll take a look on the back end why these Time Control got stuck. Typically when I have seen this, it is because something has...

3 giorni fa | 0

Risposto
Thingspeak now unable to parse website
I can't access the URL from the public internet in the US. I believe this to be the reason the ThingSpeak servers can't get to t...

20 giorni fa | 0

Risposto
error while using Things Speak with Cube MX
If you want to use the ThingSpeak library from your STM Nucleo board, I believe you will need to get these files in your compile...

circa un mese fa | 0

Risposto
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"; ...

circa 2 mesi fa | 0

Risposto
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...

circa 2 mesi fa | 0

Risposto
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...

2 mesi fa | 0

Canale


Test MQTT subscribe
This is a public channel that gets an update with a random value [0-10] in Field1 roughly every 5 minutes. You can subscribe to ...

2 mesi fa

Risposto
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 ...

3 mesi fa | 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...

4 mesi fa | 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...

4 mesi fa | 1

| accettato

Canale


Scheduled MATLAB demo

4 mesi fa

Risposto
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...

5 mesi fa | 0

Risposto
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.

5 mesi fa | 0

Risposto
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...

5 mesi fa | 1

| accettato

Risposto
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 ...

oltre 2 anni fa | 0

| accettato

Risposto
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 ...

oltre 2 anni fa | 2

| accettato

Risposto
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 ...

oltre 2 anni fa | 0

Risposto
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...

oltre 2 anni fa | 0

Risposto
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...

oltre 2 anni fa | 0

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

oltre 2 anni fa | 0

Risposto
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...

oltre 2 anni fa | 0

Risposto
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...

oltre 2 anni fa | 0

| accettato

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

oltre 2 anni fa | 1

Risposto
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...

oltre 2 anni fa | 1

Risposto
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?

oltre 2 anni fa | 0

| accettato

Risposto
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.

oltre 2 anni fa | 0

| accettato

Risposto
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...

oltre 2 anni fa | 1

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

oltre 2 anni fa | 0

Risposto
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...

oltre 2 anni fa | 0

Risposto
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...

oltre 2 anni fa | 0

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