結果:

ThingSpeak includes an integration with The Things Stack to support collection of data over a long range network. I made a short presentation for this upcoming conference that shows you how to add the ThingSpeak integration to your Things Stack project. The agenda seems to be filled with other useful IoT talks. Here is the information on the conference:

Discover the next-generation #LoRaWAN deployments at The Things Stack Conference. Explore advanced LoRaWAN features, cloud integrations and the next-generation #IoT devices at #TheThingsConference - TheThings Stack Edition, online on 28 May 2021!

Registrations are now open: – ow.ly/I1PZ30mNt0I

#TheThingsConference #TheThingsNetwork #LoRaWAN

If you go and see something you like, please feel free to share in this discussion.

'nanmean' requires one of the following: Financial Toolbox Statistics and Machine Learning Toolbox

Error in Custom (no starter code) 1 (line 15) avghumidity= nanmean(humidity);

how to remove this error?

If you teach ordinary differential equations (ODEs) or use ODEs in your class, a common challenge you may have encountered is helping your students overcome the ‘mathematical intimidation’ of the concepts. You can use the Phase Plane and Slope Field apps, developed and shared by the MathWorks Online Teaching team, to let your students develop a visual intuition of ODEs by qualitative analysis.

These apps capture the functionality of the wildly popular PPlane and DField apps created by John C. Polking in MATLAB between 1995 and 2003. While similar in function to the original apps, the Slope Field and Phase Plane apps have been written entirely from scratch in MATLAB App Designer using modern MATLAB coding practices. This makes the new apps easier to maintain, edit, and use.

Get the apps on GitHub, and visit the MATLAB and Simulink Courseware page for more curriculum resources tailored to multiple disciplines.

Via a particle photon and webhook, i am sending data to THINGSPEAK. The channel indicates entries e.g. 1239 entries but the graphs are empty. Can anyone help me to fix this? Thanks

Hi, I have an AIOT project on vertical farming project. Currently, I am using Thingspeak to store sensor values. I am planning to do the followings:

1) do an analysis on the data collected for each sensors on their max, min and median (50%) to determine that the sensor value is currently ok for the plants. I am aware that Thingspeak is able to calculate these and I am learning about this now.

2) I would like to predict the sensor values collected ( eg temperature/humidity etc). I feel that this is a cool feature to have in my project but I am not sure how do I go about this. For experts in Thingspeak, do you think this is a must have for an internship project on vertical farming and how do I apply this in my project? I am not sure if this is manageable for a single student to do this and I really appreciate it if anyone would guide me along.

Hallo all Did anyone tried to send data from siemens wincc scada to a chanell. From me experiance wincc VBA works but from wincc VBS no way? Any comment or experiance to share

MATLAB, Simulink, and their support for a variety of low-cost hardware has allowed many students to continue benefit from project-based learning, even from their own homes. Popular choices include the Arduino Engineering Kit and Raspberry Pi.

If you use or are considering using Raspberry Pi for your class, your students could benefit from using the Raspberry Pi Resource Monitor App. This app, introduced in MATLAB R2020b, will allow them to graphically configure target boards, deploy Simulink models and MATLAB functions, manage peripheral devices and interfaces, and perform common troubleshooting steps. Such an approach can simplify many of the technical challenges faced by educators who adopt a ‘Hardware at Home’ approach for their lab-based classes.

Click here to learn more about Raspberry Pi support from MATLAB and Simulink.

You may also want to learn more about Virtual Labs and Projects with MATLAB and Simulink, or read some Tips for Moving your Lab-based Classes Online.

Our ThingSpeak channels stopped updating their dashboards at 20:08 BST. We can see other public channels aren't updating too from this time.

Our code for writing to ThingSpeak is returning a 202 success, indicating it is successful, suggesting that data is still being written.

Are any ThingSpeak services down?

When I log in to my account the display just constantly cycles/refreshes about every 2 seconds, with a message at the top saying "authenticating". So I can't view anything.

I can't edit charts with the pencil icon, tried different sort of webbrowsers in windows 10 and also different pc's. When i try it on my android phone it does work perfectly with the same wifi connection? When i inspect the pencil object in the chrome browser it shows some warnings, see picture

Hello, I want to read the instant GPS data from Thingspeak Cloud and show it on the folium map, but I could not do the integration. Do you have Any suggestions?

Hello, was hoping to share my Public Sharing page with others without the need for them to log in. In Chrome, it works only if I open a page in Incognito Mode, then I can view without logging in.

Also, from FB Messenger, I can click the link and it will open a page on my Iphone without needing login, but some others, including me in Chrome click the link and it says I need to log in first.

Any ideas how to fix that?

MATLAB EXPO 2021 was held earlier this week. This global online event featured presentations and hands-on workshops covering topics from AI, to Application Deployment, and from Algorithm Development, to Teaching with MATLAB and Simulink. Dr. Magnus Egerstedt, Steve W. Chaddick School Chair and Professor of Electrical and Computer Engineering at Georgia Institute of Technology, spoke about Robotarium - a remotely accessible swarm robotics lab that remains freely accessible to anyone.

Robotarium allows users from all over the world to upload control code written in MATLAB and run experiments. Creating a swarm robotics lab is resource intensive, so such a remote access solution can be a great alternative. Watch Prof. Egerstedt introduce Robotarium.

You may also want to learn more about Virtual Labs and Projects with MATLAB and Simulink, or read some Tips for Moving your Lab-based Classes Online. If you are in China, Japan, or Korea, click here to register for dedicated EXPO events this summer.

Hi!Yersterday i finally connected my rpi 3B+ with sensehat via Thingspeak.All worked just fine but today when i started the stream(run-prod.sh) number of entries appeared stuck on 0.I created a new channel but the problem still persist.If someone could help much obliged.P.S is a project for faculty.Any help would be helpfull.

Regards, Andrei.

Hi, I am currently trying to use my FPGA to retrieve data from my Thingspeak LED status graph. Previously, I tried this with my Mode NCU. As I gave "1" to one of the fields in my LED status channel, my LED will light up. It was successfully done. Now, I want to try with FPGA (To be specific, it is Digilent's Zybo Z720 board).

I have learnt that I need to use Pmod ESP32 to achieve this function. Previously, I used the AT commands to send my data from sensor to Thingspeak channel.

Here is the code: void receiveData(XTime time){ XTime tEnd, tCur; u8 recv_buffer=0; u32 num_received=0;

XTime_GetTime(&tCur); tEnd = tCur + (time * COUNTS_PER_SECOND); do { num_received = ESP32_Recv(&ESP32, &recv_buffer,1); if(num_received >0){ num_received = ESP32_Recv(&ESP32, &recv_buffer,1); xil_printf("%c", recv_buffer); } if(tCur == tCur + COUNTS_PER_SECOND){ countdown = countdown -1; } else XTime_GetTime(&tCur); } while (tCur < tEnd);

}

void setWifiMode(void){ u8 tx[]="AT+CWMODE=3\r\n"; u32 num = strlen((char *) tx); xil_printf((char *) tx); ESP32_SendBuffer(&ESP32, tx, num); usleep(100); receiveData(3); }

void connectWifi(void){ u8 tx[] = "AT+CWJAP=\"________\",\"_____________\"\r\n"; u32 num = strlen((char *) tx); xil_printf((char *) tx); ESP32_SendBuffer(&ESP32, tx, num); usleep(100); receiveData(30); }

void establishConnection(void){ u8 tx[] = "AT+CIPSTART=\"TCP\",\"api.thingspeak.com\",80\r\n"; u32 num = strlen((char *) tx); xil_printf((char *) tx); ESP32_SendBuffer(&ESP32, tx, num); receiveData(10); }

void cipsend(float temp, u16 co2, u8 light, float humidity){ u8 command[150]; u8 finalcmd[50]; //field1 Ph field2 Temp field3 co2 field4 humidity field5 light sprintf((char*)command, "GET http://api.thingspeak.com/update?api_key=____________&field1=0&field2=%d.%02d&field3=%d&field4=%d.%02d&field5=%d\r\n" ,(int) temp_degc,((int) (temp_degc * 100)) % 100,co2,(int) hum_perrh,((int) (hum_perrh * 100)) % 100,light); u32 length = strlen((char*)command); sprintf((char*)finalcmd, "AT+CIPSEND=%d\r\n", (int)length); u32 cmdlength =strlen((char*)finalcmd); xil_printf("Length %d\r\n", length); xil_printf((char *)finalcmd); ESP32_SendBuffer(&ESP32, finalcmd, cmdlength); sleep(1); xil_printf((char *)command); ESP32_SendBuffer(&ESP32, command, length); receiveData(4); }

Now, I am a bit confusing with the reverse part (receiving data from Thingspeak). Should I use the same AT command like AT+CIPSEND, or change the AT command. Or should I need to do something like Json Parsing.

I appreciate your favourable response. Thanks Luke

Hello, I am a beginner for IoT. I found ThingSpeak is an awesome platform for IoT. I am having a problem in the API write request. Whenever we send API request for writing a channel feed, the URL return 0, if is is failure and return a non zero value for success. Is there any way to capture this data? Also, is there any way to block the return of the value from this API.

Thanks...

Hi, currently I am working on a dashboard that uses Thingspeak and Mendix. I am using a GaugeChart in Mendix and it receives data from Thingspeak. However, I have to refresh the page manually to see the new sensor values. One of my answers I got is that it is the Thingspeak that is not sending the data properly.

Long story short, he said that I have to expose API from Mendix which will produce a URL link (similar to Thingspeak API URL link) and in Thingspeak, I have to put that URL into Thingspeak. I have been looking around in Thingspeak and the closest thing that allows me to put an external URL is at ThingHTTP. However, we did not make use of ThingHTTP when communicating with our hardware and for Mendix, I only use Call rest API to receive data. Please help!

Educators make their course material more interactive, promote self-directed learning, and increase student engagement through Live Editor. One of the advantages it offers is animated figures in your Live scripts. This can help students better understand dynamic systems such as the motion of a projectile or a double pendulum through visualization. With R2021a, you can now replay animations and explore individual frames without having to re-run the code.

To do so, use the playback controls that appear within the figure window after an animation is done playing. You can view and run this example animation within your browser.

Learn more about creating and sharing live scripts for applications such as flipped classrooms on this Instructional Resources page.

Hello! I use 3 sensors and send the data via esp8266 to thingspeak. I want to take the data from thingspeak and send it to an html page created by me but I haven't worked with thingspeak so far and I don't know how I should proceed. Is there anyone who can help me? An example code that takes data from thingspeak would help me a lot.