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Christopher Stapels


Last seen: 1 day ago

MathWorks

144 total contributions since 2017

Marketing Manager, ThingSpeak and Mass Market Hardware

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Answered
ThingSpeak Data Analysis answer is always NaN
If there is no data in the last 120 minutes, this will return empty, and make the average NaN. humidity = thingSpeakRead(readCh...

1 month ago | 1

Answered
ThingSpeak Google Gauge name does not show UTF-8 coding correctly
The fix is live, please check it out. I have a widget with Scandinavian letters in the title. https://thingspeak.com/channe...

1 month ago | 1

| accepted

Submitted


IoT Data Explorer for ThingSpeak and MATLAB
A MATLAB app to visualize ThingSpeak data. Make time comparisons of your data, retime data, and export data.

1 month ago | 21 downloads |

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Answered
Display in small window
I used appdesigner in MATLAB. I put the following code in the startup function. It updates every 10 seconds. Plus, the window ...

2 months ago | 0

Answered
MATLAB Visualization for Thingspeak
There must have been some confusion on which products require the paid license. In this case, a paid license for ThingSpeak is n...

2 months ago | 0

| accepted

Answered
How to calculate data with price rate for water consumption.
This sounds like a very interesting project. I wonder what sensor you are using to track the water consumption. It sounds like ...

3 months ago | 0

| accepted

Answered
Things speak data upload from sensors at the same time issue
A single update is generally limited to 8 fields, plus locaton and status information. There are a few ways to achieve the effe...

3 months ago | 1

| accepted

Channel


duck pond info
Here is the description

3 months ago

Answered
MQTT subscribe gets no data back
Can you try connecting with another desktop based broker (MATLAB has one) or MQTTFx to make sure you have all the api keys corre...

3 months ago | 0

Answered
How do i send multiple emails to different people using the Thingspeak Matlab Analysis
You can only send emails to your own account, to prevent misuse of the system. You could use a particular code in the email an...

4 months ago | 0

Answered
Save React button disabled when Edit React
We have created a fix for this issue and will release a patch in an upcomming release. In the meantime, the easiest work around...

4 months ago | 0

Answered
Bulk CSV upload to ThingSpeak with Python
When I write write_api_key=xxxxxxxxxxxxxxxx&time_format=absolute&updates=2020-04-03T10:26:23+0100,1.2,2.3,3,4,5,6,7,8,42.0,0.5,...

4 months ago | 1

| accepted

Answered
Bulk CSV upload to ThingSpeak with Python
You put the values from the csv file into the params. so if your csv file says date, field1, field 2, 2020-01-01 12:00:00,10,...

4 months ago | 1

Answered
Bulk CSV upload to ThingSpeak with Python
The documentation page explains where to put the channel ID. The Hackster article you mentioned on the forum is the correct one...

4 months ago | 2

Answered
Can we upload image to Thingspeak?
At present, it is not easy to upload images to ThingSpeak. You could break it up into multiple fields and feeds, but it would r...

4 months ago | 0

| accepted

Answered
Use Thingspeak to read data from a password protected website
I tried to visit my.solytic and the apge timed out, but that might be because I dont have an account. I went to https://www.sol...

4 months ago | 0

Answered
Other drones besides Parrot Mambo FPV
We have just released the MATLAB Support Package for Ryze Tello Drones . You can see examples in the Support Package Documentat...

5 months ago | 4

Answered
how i can add Robotics System Toolbox in ThingSpeak
Unfortunately, Robotics System is not presently supported in ThingSpeak. You can see Access MATLAB Add-On Toolboxes for the co...

5 months ago | 0

Answered
how can i see matlab simulink data in thingspeak
You can use the ThingSpeak Output block to write data to a ThingSpeak field. You could use the thingSpeakWrite function in yo...

5 months ago | 1

Answered
Thingspeak graphical user interface
No graphical knobs, but this one: Create Customized ThingSpeak Channel View and the Lamp Indicator widget cover much of what you...

5 months ago | 0

| accepted

Answered
How can I add multiple data from arduino to one field on Thingspeak?
Have a look at this tutorial: Compare Temperature Data from Three Different Days. It describes one of the template codes availa...

5 months ago | 0

Channel


Control 3

5 months ago

Channel


Battery 3

5 months ago

Channel


Simulink Servo Model Result

5 months ago

Channel


Simulink Servo Model setting

5 months ago

Answered
How do I write data to thingSpeak field?
Use a table or timetable wher you have datafield1. thingSpeakWrite(channelID,dataField1,'WriteKey',writeKey) See the example...

5 months ago | 1

| accepted

Answered
Can't import csv file into thingspeak.
The issue has been fixed and your csv uploads should work as before.

6 months ago | 0

Channel


import test
Here is the best description ever

6 months ago

Answered
csv upload fails "...contains invalid location fields"
There were two recent changes to csv upload. Position validation: the Latitude must be from -90 to +90, and Longitude from -...

6 months ago | 0

| accepted

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