Answered
JSON Bulk Write to ThingSpeak Channel, 401 Unauthorized Error
It seems that ThingSpeak is not understanding your API key. This example for an RPI uses python. Does your code look similar? ...

3 years ago | 0

Answered
MQTT publish to Thingspeak with a JSON payload
You are correct that ThingSpeak requires you to have the specific format fieldx= in your payload. You can see all the correct p...

3 years ago | 0

Answered
Data is sent but not update
Is seems that you are building the url but never sending it to ThingSpeak. This would explain why neither method works. I wou...

3 years ago | 0

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Answered
Data is sent but not update
We suggest using the ThingSpeak library for Arduino, when you can. The next thing I would suggest is to see if you can update...

3 years ago | 0

Answered
How can I add multiple data from arduino to one field on Thingspeak?
Field plots are the automatic plots that show unmoderated field data. You cannot do multiple series on a field plot. You can a...

3 years ago | 0

Answered
How do I set time for my channel?
When in ThingSpeak (not here in the community), click your avatar in the upper right, and select "My Profile". There is a setti...

3 years ago | 0

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Answered
Data isn't showing up in the channel
Can you try this code on you pi for the REST API? Do you get a value in your channel? import requests import threading ...

3 years ago | 0

Answered
Help with Matlab Analysis Thingspeak script
Sorry to leave you hanging for so long. I would just get the last value (why do you need the last 3 values? % my suggestion l...

3 years ago | 1

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Answered
my project graph is not showing in my channel
We reccomend using the ThingSpeak library for arduino and ESP. It will take care of a lot of problems for you. First, however ...

3 years ago | 0

Answered
Sonoff TH16 - Collect data
Yes, you can use the developer API mode in sonoff to read data and send it to ThingSpeak. You will need some program that can ac...

3 years ago | 1

Answered
Hi, may i know. how to set the update value to thingspeak server from every 3min to every 12hour ? from my iot devices.
The data comes from the device, so you can chage the update frequency on the device, unless the data is coming from some other w...

3 years ago | 0

Answered
Making MQTT data visible in ThingSpeak
If the data is not ingested into your channel, there is not a file to see what data was sent. If the data is ingested into your...

3 years ago | 0

Answered
unable to sign on to thingspeak
Can you try a fresh browser (or perhaps incognito) or a different computer? You may also have to clear cookies associated with ...

3 years ago | 0

Answered
j'ai un probleme de surveillance mes grandeurs sur thingspeak
There are very many examples on the wild web search sim800L and ThingSpeak, im sorry to say we do not yet have such an example i...

3 years ago | 0

Answered
Recover from backup.
To clarify, the OP was asking about historical data in ThingSpeak. There is no backup of the data, but you can read the data fo...

3 years ago | 0

Answered
How can I display a label on the x-axis without removing the timestamp for ThingSpeak?
It appears that there is no timestamp on the x axis for the plot you shared. There appears to be a legend at the bottom that alm...

3 years ago | 0

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Answered
exportar datos en CSV
You can use the web interface to export a CSV file of all your data on the import export tab of your channel view. You can also...

3 years ago | 0

Solved

Find nth maximum
Find nth maximum in a vector of integer numbers. Return NaN if no such number exists. x = [2 6 4 9 -10 3 1 5 -10]; So ...

3 years ago

Channel

Frizz
stuff

3 years ago

Answered
Reading large amount of entries from a channel starting with some date
I recommend choosing your daterange to read below the limit (say 5000 entries) then you can have a well determined output each t...

3 years ago | 0

Answered
Is MQTT functionality implemented for 3rd party applications?
Theindustrial communication toolbox includes MQTT interfaces. ThingSpeak maintains an MQTT broker that you can interact with to...

3 years ago | 0

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Answered
Clearing channel data not working
The database schedules the delete job as a background task, occasionally you might get behind a flood of other requests. Still,...

3 years ago | 0

Answered
How to add a widget for talkback in the my channel section along with incoming sensor data visualizations?
You can use the plugins app to add javascript that will make a button that sets a channel value. You will be able to use the p...

3 years ago | 0

Answered
Thingspeak MQTT connectivity with LoRa
All the MQTT settings are here at the MQTT API page in the help. You will need an MQTT device and a channel, you can see how to...

3 years ago | 0

Solved

Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

3 years ago

Answered
How to use thingspeak in online simulator of arduino like tinkercad and wokwi?
This https://www.mathworks.com/help/thingspeak/prototyping-with-sonar-proximity-sensor.html example of a proximity monitor shows...

3 years ago | 1

Answered
Cannot create a new channel.
We worked with Neil and got him going again. He had an expired commercial trial. They can be extended or restarted but you nee...

3 years ago | 0

Answered
Thingspeak unit - 24 messages every same minute
If each device has its own channel, you can upload all messages in the same second. If you have a home or student unit, you are...

3 years ago | 0

Answered
How to write to thingspeak channel from thinghttp?
If your ThingHTTP is interacting with an external website, you can rewrite it in MATLAB analysis using webread or webwrite. The...

3 years ago | 0

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Answered
Access to Image Channels with academic licence
I suspect you mean that you have a campus wide license or academic MATLAB license. ThingSpeak paid licenses are in addition to ...

3 years ago | 1