Esp32 Cam A fatal error occurred: Failed to connect to ESP32: No serial data received

Using Arduino Programming Questions
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espcamerror
espcamerror1920×866 172 KB

code can't upload and show this message
A fatal error occurred: Failed to connect to ESP32: No serial data received.

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@engahmedmaherr ,
I have deleted your reply to another topic, please do not add your questions on the end of other people's topics.

Please do not post images of code and errors, they are useless. Please post the actual code and errors in code tags as per the forum guide.

Could you take a few moments to Learn How To Use The Forum.

It will help you get the best out of the forum in the future.

Thank you

1 Like
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Did the OP press the button after selecting upload?

Has the OP posted an image of his project all connected up to the FTDI thingy?

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i use arduino for proggraming not FTDI

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Are you using level shifters?

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Carry out a basic connection test;

You first need to press and hold the BOOT switch or connect the GPIO0 pin to GND. This manual connection of GPIO0 to GND is what's normally needed for an ESP32CAM.

Now with the BOOT switch still held low or GPIO0 connected to GND, press and release the Reset button on the ESP32CAM. You should see the text similar to that below in the Arduino IDE serial monitor;

    ets Jun  8 2016 00:22:57
    
    rst:0x1 (POWERON_RESET),boot:0x3 (DOWNLOAD_BOOT(UART0/UART1/SDIO_REI_REO_V2))
    waiting for download

Note in particular the 'waiting for download' message, if you see this the serial connection to the ESP32CAM is probably working and the ESP32CAM is ready for upload.

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