Hans Scharler

Last seen: Today

MathWorks

216 total contributions since 2011

IoT Engineer @thingspeak

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Answered
posting field values within few seconds fails
The free ThingSpeak account tier has an update rate limit of 15 seconds. You can send both field values in one update. fie...

15 days ago | 1

Question

Are you a startup?
I wanted to see if any of you are a part of a startup, represent an accelerator, or an entrepreneur. Let me know below or feel f...

29 days ago | 0 answers | 0

0

answers

Published

Staying Connected with CheerLights and ThingSpeak
This time of year is about staying connected, maybe more so this year than with previous years. CheerLights is an IoT...

3 months ago

Published

ThingSpeak Now Supports MATLAB Swarm Scatter Charts
ThingSpeak automatically gives you access to the latest MATLAB features from the latest MATLAB release. MATLAB R2020b now...

5 months ago

Solved

Make a random, non-repeating vector.
This is a basic MATLAB operation. It is for instructional purposes. --- If you want to get a random permutation of integer...

5 months ago

Solved

Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

5 months ago

Published

Explore ThingSpeak IoT Data Using a MATLAB App
ThingSpeak users frequently ask how to build customized views for their ThingSpeak data. The channel view provides...

5 months ago

Question

Who is using the MATLAB Discord channel?
Is anyone using the MATLAB Discord channel?

7 months ago | 2 answers | 1

2

answers

Answered
Putting a code open source
You can share your open source MATLAB project via GitHub and then peer it to File Exchange. This will get you maximum reach and ...

8 months ago | 0

Answered
Upload trained machine learning model to Thingspeak
There is a "Developing an IoT Analytics System with MATLAB, Machine Learning, and ThingSpeak" paper linked from the ThingSpeak w...

11 months ago | 1

| accepted

Published

One Million ThingSpeak Channels!
Christopher Stapels, the product marketing manager for ThingSpeak, told me that we crossed ONE MILLION CHANNELS of IoT data...

12 months ago

Channel

Channel 1000207

1 year ago

Answered
License Manager Error -9 Your username does not match the username in the license file.
The best way to resolve a License Manager Error -9 is by reactivating MATLAB with the activation client. Linux The activation ...

1 year ago | 9

Answered
Translation R code to Matlab
I don't have a direct answer, but you could use a COM-based interface to call your R function from within MATLAB. There is a pro...

1 year ago | 0

Published

Send Email Alerts from ThingSpeak
For this post, I would like to introduce Christopher Stapels as our guest blogger. Christopher builds lots of cool IoT...

1 year ago

Answered
How to fix this error on Matlab analysis for your email notification?
Is your channel private? If so, then you need to supply a Read API Key with the URL. url=strcat('https://api.thingspeak.com/cha...

1 year ago | 1

Answered
How to read data from your thingspeak on Matlab Analysis
I would start with thingSpeakRead function in MATLAB. data = thingSpeakRead(12397,'Fields',[1,4],'NumPoints',3,'OutputFormat','...

1 year ago | 0

Answered
How to read data in thingspeak using rest client?
Hi. You are close. You also need to provide a Read API Key. https://api.thingspeak.com/channels/929272/feeds.xml?results=4&ap...

1 year ago | 0

Answered
i am sending the data from RTC through arduino to thingspeak. the data sent is shown in the serial monitor but cant see any graph on thingspeak.
I would start by combining all of the update requests into one request. String secData = "GET /update?api_key="+ myAPI +"&"+ ...

1 year ago | 0

Published

Collect and Visualize Agricultural Data using The Things Network and ThingSpeak
Long-range wireless communication technology enables the transfer of sensor data over a long distance while using low-power...

1 year ago

Channel

Weather and level station
Weather and level station using the Sentient Things IoT Node

1 year ago

Published

Analyze and Visualize Air Quality Data with MATLAB
Have you ever wondered if the air around you is healthy? It is possible to understand air quality by using MATLAB to...

1 year ago

Answered
ThingSpeak noncommercial channel limits
50% complete refers to how much of the channel settings that you have specified. If you add a description, tags, field labels, a...

1 year ago | 0

| accepted

Answered
get local temperature into thingspeak
Try weather.gov and passing in decimal degrees location for your city. natickWeather = webread('http://forecast.weather.gov...

1 year ago | 0

Answered
thingspeak read --> stock in a variable --> use this variable in thingspeakwrite ? possible ?
I would try this using the MATLAB Analytics app. The MATLAB Analytics app can be scheduled to run periodically. Also, on the lin...

2 years ago | 0

Answered
ThingSpeak don't update channel automatic
I would write to a second ThingSpeak channel instead of writing data back to the same channel. The reason is that ThingSpeak wil...

2 years ago | 0

Answered
Thingspeak bulk update csv problem
What URL are you sending the POST request? For this format, you need this URL: https://api.thingspeak.com/channels/XXXYYY/bulk_u...

2 years ago | 1

| accepted

Published

Predictive Maintenance: From Development to IoT Deployment
Interest in predictive maintenance is increasing as more and more companies see it as a key application for data analytics...

2 years ago

Channel

Google Scholar Citations
Tracking my Google Scholar Citations over time using MATLAB + TimeControl

2 years ago

Channel

My Contributions to MATLAB Central
Tracking my contributions to MATLAB Central

2 years ago

Hans Scharler

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MathWorks

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