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