Arduino ide connecting issue

Other Hardware 3rd Party Boards
1

Hey,

I've been using Arduino IDE and an ESP32 board this few last days and I just run into some trouble.

I was compiling and uploading sketches successfully and without any errors when suddenly an upload error appeared.

The error is the following:

"A fatal error occurred: Failed to connect to ESP32: Wrong boot mode detected (0xb)! The chip needs to be in download mode.
Or
the selected serial port does not exist or your board is not connected"

Also take a look at this:
image

I'd really appreciate any help!!!

2

Have you connected some external device to the pins used to set programming mode?

1 Like
3

Hi, thanks for replying.

I didn't specify but I'm really new into this world.

If with some external device to the pins you mean something like another sensor which wasn't the one connected on the board before I got the error, Yes.

Sorry if my answer isn't appropiate to your question.

Thank You!!!

4

Try disconnecting the external sensor/device and try uploading again.

5

Ok, Thank You.

I'll try.

6

Some pins need to be in a particular state for boot. See for example

It shows which gpios need to be in a certain state at boot (check the yellow ones in the list). Depending on the board you have the gpio may or may not map to the numbers on the board (just to add further confusion).

1 Like
7

Alright Man,

I'll take a look at it tomorrow.

I'm really grateful for your help!

8

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