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Vinod

MathWorks

Last seen: Today 2011 以来アクティブ

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回答済み
How to read data from ThingSpeak and control led using sim800L?
Is the SIM card activated? Have you confirmed that you can connect to the internet with the SIM800L module and your SIM card? Do...

1日 前 | 0

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All my channels stopped working
Did you check connectivity from your Arduinos? Perhaps they lost internet connectivity?

22日 前 | 0

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Multiple sensor data not uploading simultaneously on the Thingspeak fields of the same channel
That is likely because you are trying to update the same channel from multiple sensors and running afoul of how frequently a cha...

約1ヶ月 前 | 0

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Why thingspeak cant receive data from sensor ?
I'd recommend taking a look at the examples in the ThingSpeak library as a starting point for your project.

約1ヶ月 前 | 0

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Hi I have ThingSpeak paid licences but unfortunately i couldn't get real time updated data
How are you updating the channel (embedded device? browser? Something else?) If it is an embedded device, have you checked if it...

約2ヶ月 前 | 0

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Android mqtt dash board configuration problem
I use MQTT Dash on Android and was able to configure my device. See attached screenshots of my config. Please read the documenta...

約2ヶ月 前 | 0

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Data from Libelium to thingspeak
That sounds like an issue on your Libelium gateway. Your best bet is to reach out to Libelium technical support for assistance a...

2ヶ月 前 | 0

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Daily sum in bar chart is wrong
My suspicion is that the field has a bunch of 'NaN's in them. Can you download the data for the channel from th "Import/Export" ...

2ヶ月 前 | 0

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"Field value unavailable" message from Thingshow
Did you update the app on your phone to the latest version?

2ヶ月 前 | 0

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Javascript to display last value of a ThingSpeak channel on web page | ThingSpeak API
If you click the "bubble" icon on the numeric display widget added to your channel, you will get the HTML code required to embed...

3ヶ月 前 | 1

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Function 'webread' not supported for code generation Matlab - ThingSpeak - Raspberry Pi
Rather than use webread, why not use <https://www.mathworks.com/help/supportpkg/raspberrypi/ref/publish-and-subscribe-to-message...

3ヶ月 前 | 0

解決済み


Find state names that start with the letter N
Given a list of US states, remove all the states that start with the letter N. If s1 = 'Alabama Montana Nebraska Vermont Ne...

3ヶ月 前

回答済み
Can the 4 free channels each simultaneously upload to Thingspeak once every 15sec
Yes. With a free account you may have up to 4 channels updated at up to once every 15s. Note that each update is considered as o...

3ヶ月 前 | 0

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The response for updating a field can sometimes take up to 12 seconds . Too slow
ThingSpeak has an operational metric to respond to requests to update a channel within a few hundred milleseconds of receiving t...

3ヶ月 前 | 1

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回答済み
How can I tweet regularly with ThingSpeak?
Twitter has limits that prevent you from tweeting the same message repeatedly. The key to using ThingTweet is to tweet a unique ...

4ヶ月 前 | 0

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Thingspeak with MKR1000 example program from Arduino library 2.0.0 sends http error -301
The fact that it is stable with PC USB and unstable when powered by standalone USB suggests that perhaps the standalone USB is n...

4ヶ月 前 | 0

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writing to multiple fields of
Try and log the values to the serial monitor. Do you see different values for each sensor? Also, maybe your code needs to be li...

4ヶ月 前 | 1

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MQTT subscribe retrieves no data back after immediate reply
I just tested the workflow with MQTT.fx and it works fine. Some points to remember: 1) When setting up the connection, set the ...

4ヶ月 前 | 0

回答済み
ESP8266 - Write Single Field
You don't have the ThingSpeak library in your list of project dependencies in your PlatformIO.ini file. You need to add the Thin...

4ヶ月 前 | 0

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GSM sends data but cant see them on my channel.
There are no known issues on the server end. You might want to check the connectivity on your end.

4ヶ月 前 | 0

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Apps React ThingSpeak IoT says it has been triggered but my Matlab script does not generate an Alert email
Most likely your MATLAB code is triggering the Alert API too frequently and is getting a HTTP 429 code. Take a look at the docum...

4ヶ月 前 | 0

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Getting -401 error code when using WritingMulitpleFields
What is most likely happening is you are making requests to the server far exceeding your allowed data rate. One out of every 15...

4ヶ月 前 | 0

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ThingSpeak graphs and thingSpeakRead stopped working at 20:08 BST
There are no known issues at this time. Channels are updating correctly. See for example: <https://thingspeak.com/channels/9> ...

4ヶ月 前 | 1

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Only field1 is updating
What is likely happening is that the fields are being updated inidvidually, and faster than once per 15s. What you really want t...

5ヶ月 前 | 0

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pulse rate enable interrupt caused esp timeout
First, unless you have a paid ThingSpeak license, trying to update your channel every 5 seconds is a waste of resources. In fact...

5ヶ月 前 | 0

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Thingspeak.com yelling "getJSON request failed!"
The underlying issue has been fixed. A missing response header from the server caused your browser to not make any XHR requests....

5ヶ月 前 | 0

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Can I track how often and who have viewed the shared channel of mine for a day or a month if I shared my private channels with others on ThingSpeak or ThingView?
There are ways to do this -- specifically, you can set up a MATLAB visualization on the channel that when loaded increments a fi...

5ヶ月 前 | 2

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Bug in API response, Reading multiple Fields with ESP8266 Arduino Library.
I think looking at the response at one point in time is probably leading you to incorrect conclusions because the channel was up...

5ヶ月 前 | 0

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how can i solve this error appears when I try reading position
Your channel is empty, and you are trying to index into an empty array retrieved from the channel. Try this: data = thingSpeakR...

6ヶ月 前 | 0

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Connect to Sonoff bridge and temperature sensor
This blog entry has good instructions.

6ヶ月 前 | 0

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