ThingSpeak

フォロー

I'm trying to make a website with a bunch of embedded html scripts that display data received from a Simulink program. All of my numerical data I can make public and then put the iFrame code onto my website, but when I go to add an image widget into my public channel there isn't an option to do this. I've tried using thingSpeakRead() in MATLAB using the API key with no luck. How does one publicly display images uploaded to ThingSpeak? They did it here, and I can't figure out how: https://thingspeak.com/channels/366768

I take a photo and show it on Thingspeak, the image changes with the time the code is written. When I want to look back the storage image data , how do i look at ?

I used the matlab tutorial to send an image to thingspeak using an ESP32-cam. See link: https://www.mathworks.com/help/thingspeak/write-image-to-thingspeak-from-esp32-camera-board.html The image is being shown using the display widget. I want to use the image for object detection. I set up a new reaction so when a new image is uploaded then a matlab code runs to detect if a certain object is in the image. I can't figure out how to access the actual image data. Using thingSpeakRead() does not work using the image channel id and API key. It does work on the data channels ID and API key but it does not have any data in it. I am not sure how thingspeak can show my image and routinely update with a new image yet I can't use it for matlab analysis. I spoke with a thingspeak rep and they are not sure how to solve this issue. I have a paid student thingspeak account and am using Matlab version R2023a. Any ideas are appreciated.

I can upload an image using postman. But when I try it with my rpi the image never shows. I receive status code 202. Then the current image from postman goes blank. Tells me the post sort of worked... Does anyone have working python3 code that they can share? Posting Images with rpi not updating in thingspeak I've had this problem before. The issue is the format that the PI sends the bytes for the image for an HTTP POST arent recognized as a valid image type by MATLAB in ThingSpeak. Are you using this rpi code from the ThingSpeak examples? I was just using a pic already on the Pi, using a path to the actual pic. Trying to do it similar to Postman. The code in the example I shared has a part for a local filename. If you chage that to match your file does it work? Is the method you are using similar to what is shown in the code? When I tried a curl command directly from command line in the pi, I got the same problem you described. I tried to use the posted code and it failed. Hence tried postman and it worked. So tried to duplicate postman in python and it failed. I think issue is the new rpi os, python 2 vs 3? Anyone? Looking to getting it to work. image rpi

hello, how i can show module image in to public view. in widget public dont show the option. exist any code for MATLAB? show channel image in public view Right now, images can only be shown on the private view of your channel. There are functions to read images into MATLAB planned for a future release. hi thank you, i can ask here about email notify, im trying add a alert when new image is upload. but maybe is not possible whith no MATLAB functions. i see another options for external email or sms i need study. There is an email alerts service built in to ThingSpeak, but Id prefer you ask a new question about it, specifically asking what you would like to do. It would probably be better to use the MATLAB answers section below unless you are looking to start a borad discussion about the feature and your project. image channel public view matlab

hello, i buy a license for upload images to channel and ESP32CAM, after compile and upload the example code, then reset the esp32. https://la.mathworks.com/help/thingspeak/write-image-to-thingspeak-from-esp32-camera-board.html the serial monitor only show Brownout detector was triggered ets Jun 8 2016 00:22:57 rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT) configsip: 0, SPIWP:0xee clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00 mode:DIO, clock div:1 load:0x3fff0018,len:4 load:0x3fff001c,len:1216 ho 0 tail 12 room 4 load:0x40078000,len:10944 load:0x40080400,len:6388 entry 0x400806b4 i have another code working for esp32cam and send image to telegram... maybe any can show why works there and not here please. esp32cam upload image, example dont work It looks like in your more recent MATLAB answer, you were able to get an image up to ThingSpeak. Can you update this discussion and let us know what the problem was, if you were able to fix it? hi, after compare two codes, i can say this in void setup, activate the cam. WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0); but i think is the programer to esp32cam maybe, i have a FT232RL. in the example option here show another. btw here is the code working for me with a magnetic sensor door in pin 2, when sensor is open image upload, or you can delete in the void loop. esp32cam image upload license

Greetings, I have a an image (200, 1800) that should fit along a segmented line (2,16, several segments) including deforming the image. Is there any MatLab algorithm that can wrap or fit an image to a polygon ( a set of x,y coordinates). Any hint towards a solution is greatly appreciated. best regards Christian

Current situation: I have saved my processed image in raspberry pi. I would like to upload the image to Thingspeak. However, I came across some posts saying that we cant upload image to Thingspeak. I wish to view my image at Thingspeak and also at Thingview(mobile app). Questions: 1) Can we upload image to Thingspeak? 2) Or can i upload the image to Google Drive then link it back to Thingspeak ? 3) If no, any way to do it? This is the example that show the image, but I not sure how it does. https://thingspeak.com/channels/276330