Solved

Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

4 meses ago

Solved

The Piggy Bank Problem
Given a cylindrical piggy bank with radius g and height y, return the bank's volume. [ g is first input argument.] Bonus though...

4 meses ago

Thingspeak control LED with Arduino
Use the ThingSpeak library for Arduino and ESP. There are some great examples there to help you complete the read task.

4 meses ago | 0

Not able to connect to the mqtt service.
I'm glad to hear that correcting the client ID solved the issue for you. The newer process might be slightly more complex than b...

4 meses ago | 0

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Solved

First non-zero element in each column
For a given matrix, calculate the index of the first non-zero element in each column. Assuming a column with all elements zero i...

5 meses ago

Solved

Find the Oldest Person in a Room
Given two input vectors: * |name| - user last names * |age| - corresponding age of the person Return the name of the ol...

5 meses ago

Solved

We love vectorized solutions. Problem 1 : remove the row average.
Given a 2-d matrix, remove the row average from each row. Your solution MUST be vectorized. The solution will be tested for ac...

5 meses ago

Solved

Matlab Basics - Absolute Value
Write a script that returns the absolute value of the elements in x e.g. x = [-1 -2 -3 -4] --> y = [1 2 3 4]

5 meses ago

Solved

square root
Find the square root (y) of an input (x).

5 meses ago

Solved

Is it a number?
Determine if input is numeric. If it is,output is 1; if it is not, output is 0.

5 meses ago

Solved

Basic commands - Least common multiple
Make a function which will return least common multiple of "a" and "b" Example: a=8; b=6; y=24;

5 meses ago

Solved

Find the complement of a number in binary
Input x is a decimal number and output y is the complement of binary representation of x. For example, x = 10 has the binary ...

5 meses ago

How to add data to field with thingHTTP
You can use MATLAB analysis code to add the value to your channel. Use webread() or webwrite() to get the data from the externa...

5 meses ago | 1

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'React' still sending email after deletion
The emails may have been queued up and not delivered by your client right away.. You can use the get alerts history API to see ...

5 meses ago | 0

Raspberry Pi Pico - Using Thingspeak with SIM800L
This example is for Arduino, but you make be able to get the commands from that demo. Ive seen a lot of Sim800 stuff on the wil...

5 meses ago | 0

I am trying to publish data through desktop MQTT Client, but it's get connected but when I am doing subscribe it says connection lost?
The topic location is a little confusing. Where it says "topic" you need to edit that field.

5 meses ago | 0

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Bulk-Update Using ESP8266
You can just define the temperature readings as variables, but making them in an array will make it easier to write them to the ...

6 meses ago | 0

Query with time limit to read the field is not working
You can use MATLAB in the free ThingSpeak even if you dont have a seperate MATLAB license. Those two readings have a timestam...

6 meses ago | 0

Sending a character string ?
Write the data to the status field (...&status=myStatus... ), and then set 'show status" in your channel settings.

6 meses ago | 0

[RESOLVED] How to send data from my Arduino to Thingspeak using a GSM SIM800c ?
Seems like you have made a nice start on your first project! You seem pretty close to the goal. Since you shared the API key, I...

7 meses ago | 0

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Displaying dates instead of minutes in 3 day comparison
The temperature example you used is a way to compare three different ranges of times onthe same plot. You can read the timestam...

7 meses ago | 0

Connecting to ThinkSpeak With Esp8266 and FireBeetle board Errors
Why not try the ThingSpeak library for Arduino and ESP and others ? I think its a lot easier than using the AT command set.

7 meses ago | 0

Channel

ShakeFreq
15 second moving mean of the shake data

7 meses ago

How to retrieve data from thingspeak to unity using rest API ?
You can use the Read Data endpoint to get data from ThingSpeak along with UnityWebRequest in Unity. You can also use the MQTT...

7 meses ago | 0

Yes, this definitely possible. Have a look at the no data check section for the React App help. Also you could write a MATLAB...

7 meses ago | 0

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Can someone help me with this coding? When I run it always says No data read, it should be show the result I write there because it already passed the conditions
I just read your channel and there is no data in the past day. NumDays ,1 privides the data from the last day starting now. Yo...

8 meses ago | 0

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Can someone help me with this coding? When I run it always says No data read, it should be show the result I write there because it already passed the conditions
Channel 1517893 is not public. In this line: temperatureData = thingSpeakRead(channelID,'NumDays',1,'Fields',1); you wil need...

8 meses ago | 0

HTTP Post - No data at receiver
Instead of thingHTTP, I would reccomend you use a MATLAB analysis. You can use the webwrite command to create a POST. There is ...

10 meses ago | 0