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Christopher Stapels


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MathWorks

205 total contributions since 2016

Marketing Manager, ThingSpeak and Mass Market Hardware

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Answered
Getting -401 error code when using WritingMulitpleFields
There are two calls to writefields in your code, I don't see a delay between them. I see a delay at the end of 20 seconds. I wo...

1 day ago | 1

| accepted

Answered
Raspberry Pi - MQTT Publish & MQTT Subscribe- Updating Multiple Fields In one MQTT publish request and vice versa
Your message needs to be of the form 'field1=value&field2=value2' etc. If you use the update single field topic instead of the ...

13 days ago | 0

Answered
Sometimes not receiving email alerts from Thingspeak
See the limitations section on the send alerts page. The resrictions can be a bit tight especially when you are debugging. If ...

13 days ago | 0

Answered
My public channel signs me out and I have to login every time I view my public channel.
We aplogize for the inconvienience. Please see this post for more information. Public View is no longer public

13 days ago | 0

Channel


Free Write Channel
For demonstrating writing to a channel in presentations

13 days ago

Answered
Sometimes not receiving email alerts from Thingspeak
You can look at your alerts history here, but it does not record failed attempts. I suggest that you can change your MATLAB ode ...

15 days ago | 0

| accepted

Answered
how to read channel status using thingSpeakRead in Matlab?
Our up time is really high, there is no reason the channel should be unavailable. Can you show the format of the command you ar...

15 days ago | 0

| accepted

Answered
Login is required for public chanals
Please have a look at this discussion.

18 days ago | 0

Answered
Unable to upload a csv file
Duplicate values are not allowed in the channel. It is possibe that you had already written that data and tried a second time. ...

29 days ago | 0

Answered
Thingspeak Talkback Idempotency issue
One possible solution, though possibly expensive in terms of bytes would be to read the command - instead of executing. Then wh...

1 month ago | 0

| accepted

Answered
gauge Apps Plugins not working
This is a known issue, and we have a fix planned for later today. Thank you for letting us know.

1 month ago | 0

Answered
Screen alternating between "Login Successful" then "Authenticating" then back to "Signed in successfully" etc
Thanks for letting us know. You can clear all cache or clear the cookies associated with ThingSpeak and MathWorks in your browse...

1 month ago | 0

Answered
"Error -303"
-303 is unable to parse resonse, which you can see in the library github. 8000 records seems like a lot of data for a device to...

1 month ago | 0

| accepted

Answered
Bug in API response, Reading multiple Fields with ESP8266 Arduino Library.
I think you are comparing two different operations as well. The first is a read of the latest feed entry, or all of the field v...

1 month ago | 1

| accepted

Channel


AirQ NDIR

2 months ago

Answered
ThingSpeak data tips Matlab Visualization Plot
Some of the features of ThingSpeak field plots are not available on custom visualizations. Interactive plots from custom visua...

2 months ago | 1

| accepted

Answered
Newbie Help For PIC and ESP8266 Connection To Thingspeak
Welcome to ThingSpeak. Sorry about the trouble. Use the ThingSpeak library. We make sure its the easiest way. Look in the exa...

2 months ago | 1

Answered
Postman Thingspeak Error 400 & Thinkspeak not updating the data
The bulk write API can be kind of tricky when it comes to syntax. Follow the bulk write doc suggestions closely. There is a P...

2 months ago | 1

| accepted

Answered
Not getting reading multiple senaors data from thingspeak
I'd start by trying to write one data from the ESP. Just hard code something and make sure it writes to ThingSpeak. Take all th...

2 months ago | 0

Answered
can not upload data to thingspeak even while the data is displaying in serial moniter
What are you seeing on the serial monitor? I think the problem is that you are stopping the client before the server acknowlege...

2 months ago | 0

Answered
Write to Thingspeak Error in Matlab - URL is incorrectly formed
The most likely reason is that the timestamps already exist in your channel. You cannot write data with a timestamp that alread...

2 months ago | 0

Answered
ThingSpeak Communication Library for Arduino with ESP8266
Those pins would be defined by your board properties, not by the ThingSpeak library. It seems that the standard is GPIO1 (TX) a...

2 months ago | 0

Answered
Can I list more than 10 private channels?
We are addressing the problem and will release a fix in a future release. As a temporary workaround, add '&per_page=100' to the...

3 months ago | 1

| accepted

Answered
Controlling an LED with the Pi 4 using ThingSpeak MQTT subscribe.
I havent looked at the python doc for subscribe. Where do you set the client ID? If this is it, you will want to use a differe...

3 months ago | 0

| accepted

Answered
Controlling an LED with the Pi 4 using ThingSpeak MQTT subscribe.
I would look at the MQTT troubleshooting page for subscribe. It is possible that you have settings in your client that the Thin...

3 months ago | 0

Answered
Thingspeak broker address not working
The mqtt broker gives really limited messages. If you had parts of the format wrong for the subscribe method, it will probably ...

3 months ago | 0

| accepted

Answered
Thingspeak broker address not working
It is working great across all of my many channels, I did not see a break near the time you posted this. What command did you t...

3 months ago | 0

Answered
API - Inconsistency with Curl, when downloading a .csv of my channel
You can get all the correct API calls from the Read data section of the documentation. The API limits you to only 8000 points of...

3 months ago | 0

Answered
ThingSpeak : Read & Write Multiple Field
Can you describe the data flow a bit more? "in MATLAB Simulink via ThingSpeak Cloud from MIT APP Inventer Application " What ...

4 months ago | 1

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