Christopher Stapels

MathWorks

Last seen: 1 day ago | Active since 2016

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ESP8266 trouble connecting to api.thingspeak.com, but it's weird
Also answered here.

2 days ago | 0

Answered
ESP8266 connection issues but
I've seen ESP8266 with long connection times of 10-15 s, but nothing quite like what you see. I know you have the MQTT devices ...

3 days ago | 0

Answered
How to prevent gauges and graphs to move when scrolling?
If its really important, I would suggest you host them in an iframe on another site. The scrolling behavior is sometimes odd on...

8 days ago | 0

Answered
How do I use "export recent data"
You can use the Read data endpoint with .csv extension. Make sure all the fields on your channel are active in the channel sett...

8 days ago | 0

Answered
Sending out email when event occurs not on some interval
Definitely! Use the React app. You can check the data on a regular schedule (kinda like time control) or use 'on data insert' ...

23 days ago | 0

Answered
Valor de campo no disponible
Here are a few things I notice about your code. You run this line in the setup function, im not sure why. ThingSpeak.setFie...

27 days ago | 0

Answered
how should I take a screenshot of a matlab visualization and send it to myself by email?
You could use the charts API to send a particular field chart. You wont get the custome MATLAB visualizations this way though. ...

1 month ago | 0

Answered
How can I use my Arduino Uno R4 WiFi with ThingSpeak?
I found one example using WiFiS3.h.

1 month ago | 0

Answered
Project Guidance Questions. A water level and rain fall system
Sound terrific. Please let us know how it goes. There is a discussions area in the ThingSpeak community if you wated to have a...

1 month ago | 0

Answered
I keep getting the Compilation error: call of overloaded 'setField(int, double&)' is ambiguous when setting fields in my TS channel
Try setting the value first in this line: ThingSpeak.setField(2, double(PH_LEVEL)); e.g. double myLevel=double(PH_LEVEL); T...

1 month ago | 0

Answered
How can I use my Arduino Uno R4 WiFi with ThingSpeak?
You can absolutely write to ThingSpeak with an Uno R4 wifi. You can use any wifi library (its probably built in) that lets you w...

1 month ago | 0

Answered
Visualization NOT showing last values collected.
The 'updated at' on the my channels view is not guaranteed to be totally up to date, it is only an estimate. The most accurate ...

2 months ago | 0

Answered
how to remove HTTP error 301 while sending data from nodemcu esp8266 to thingspeak
301 error is connectivity. You can Try a different network, or move your device in the present network closer to the router ...

2 months ago | 0

Solved

Find sum of alternate numbers in a vector
Find sum of alternate numbers in a vector starting from index 1

2 months ago

Solved

Generate this matrix
Generate the following matrix. n = 2; out = [-4 -3 -2 -1 0 -3 -2 -1 0 1 -...

2 months ago

Answered
Display Thing-Speak's charts in my MATLAB app.
Click the cloud icon on your ThingSpeak play. Copy the html starting with '<iframe width=...' Open app designer. Type 'html' ...

3 months ago | 0

| accepted

Solved

Getting the indices from a vector
This is a basic MATLAB operation. It is for instructional purposes. --- You may already know how to <http://www.mathworks....

3 months ago

Answered
ThingSpeak public image display
I have similar workflows for two of my projects. For one, I upload to dropbox using this function to upload. Then you can use ...

3 months ago | 2

| accepted

Answered
Visualisation iOS App availablility
Apparently you can use the share button in safari on iphone to put a page on the home screen of you iphone! I just did it for m...

4 months ago | 0

Answered
Visualisation iOS App availablility
I usually use the browser on my phone to interact with ThingSpeak, I can see most of what I need to there. In some cases, Ive w...

4 months ago | 0

Answered
Has anybody managed to talk to ThingSpeak on an Arduino R 4 (wifi)?
If you want to go without the library, this example shows how to write the HTTP commands somewhat directly without the ThingSpea...

4 months ago | 0

Answered
Showing data from different channels on a map
MATLAB visualization plots in ThingSepak can do some of this, but you wont be able to get the interactivity you are looking for ...

4 months ago | 0

| accepted

Answered
Maximum number of fields per channel in ThingSpeak
@Abbas You can definitely get help here on MATLAB Answers or oh theThingSpeak community. If you have an academic or commercial l...

4 months ago | 0

Answered
How to send notifications to Pushbullet via Thingspeak
Yes. Pushbullet has a developer API. You can use MATLAB analysis app to write MATLAB code to communicate with the PushBullet ap...

4 months ago | 0

Answered
It seems that data is not recorded
There was a short downtime for ThingSpeak on July 19 from approximentally 6 am UTC until 10am. You can always see the present s...

4 months ago | 0

Answered
how to send data from excel sheet to thingspeak automatically
Probably the best way would be to use MATLAB installed on your machine. You can use ThingSpeak write and automate a process in...

5 months ago | 0

Answered
Data loss and latency issues from Node Red to ThingSpeak channel.
The most likely cause of lost data is sending too fast. If you are using a free account or using the bulk write endpoint, the mi...

5 months ago | 0

Answered
Is it possible for the public user to extract all the data?
Also here is the API call for read data documentation. use the parameters for results or days or minutes, daterange to control ...

5 months ago | 0

Answered
Setting up Thingspeak on a Raspberry Pi as a local server
Unfortunately, MathWorks does not support the installation of the self hosted version of ThingSpeak. That version was created be...

5 months ago | 0

Answered
MQTT clientID, USER and Password
Have a look at the MQTT API page. The MQTT basics pageshows you the parameters you need as well as the publish and subscribe pag...

6 months ago | 0

Christopher Stapels

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