[Solved] Failed to connect to ESP32: Timed out waiting for packet header”

Hello

I am trying to program two ESP 32 modules and during the upload when it finishes the write process I get this error :
Failed to connect to ESP32: Timed out waiting for packet header”


On YouTube and websites I found a description of how this problem can be solved. I soldered a 10 uF capacitor between pin E and GND but nothing helped. The Arduino I am using i.e. the software is version 1.8 and Win 7. The drivers are correctly uploaded.
The modules I am trying to program are these :

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Added after 1 [hour] 24 [minutes]: .

I only now noticed , that I should move this topic to another section. Therefore, I ask the admin to close here and move it to the section ESP 8266 and ESP 32 because there it seems to me it should be posted

I am watching on YouTube how the program is uploaded to the module with the capacitor. And as far as I can see , after connecting , the red led lights up ( before uploading ) and the blue led flashes. In my case, only the red is lit.

wosiekpl wrote:

I soldered a 10 uF capacitor between the E and GND pin

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Completely unnecessary.

What code upload speed do you have set in the Arduino IDE?

Hello

This is what it looks like:
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Now I upload to the module , which is on the left in the photo

The program is Wifi scan

Interestingly , it used to be to the module , the one on the right , I uploaded the program to Blynk to switch the relays and it worked. Now I try to upload it again and get an error

Reduce the speed to 115,200 and check.

just changed and uploading



Still error

Maybe the module you have selected is unsuitable


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Now there is a different and slightly different problem ( Invalid head of packet ). I would replace the USB cable to start with, just in case. When loading the code into the second module (the one on the right, that's the ESP8266), does it also get this error?

Added after 2 [minutes]: .

The USB port on the comp is configured for 9600 ?! I don't use windows so I don't know if it matters.

It was on 9600 and now I have changed it to 115200 . After the change it does not work , the other module also. Now I change the cable

I have changed both the cable and the port and still nothing, the same error keeps popping up

wosiekpl wrote:

the same error keeps popping up

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So which of the two that were already occurring?

Now this is how it looks like , The module on the left side , I marked it with number 1


In the manager I had a mouse driver error , it was displayed twice , one OK and the other with an error and I deleted it

Now it looks like this



Module 1 is working , this is how the reading from the port looks like

From the first image, it appears that the code loaded correctly.

This is what it looks like now that modulus number 2 is connected



It detects it as a mouse



This is how it is after uploading to module number 2. I have not changed the module type in the tools , it is still saved as ESP32 Dev Module

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After connecting this module , there is a blue Led on the top right . The second led , also blue , next to the usb connector lights up but very weakly . After compilation during uploading both LEDs turn off.

It looks like there is no proper USB driver installed for this second board. The images that are in the first post are too vague to see what USB-UART bridges are sitting there.

Both have the same CP2102 chip, now when I buy I will choose another, the CH340

After connecting , in the manager after updating it shows that the driver is installed. Now I will do the same in Arduino, looking for a library

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wosiekpl wrote:

This is after uploading to module num 2. I have not changed the module type in the tools , it is still saved as ESP32 Dev Module

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Is this module number 2 also an ESP32? Because if it's an ESP8266, then you need to choose a different board.

Yes , you are right
I have a library for ESP32

But there is no one for ESP8266

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Only that during the update after connecting it does not detect the ESP8266 module

You need to install the ESP8266 board manager "manually":
https://github.com/esp8266/Arduino#installing-with-boards-manager

The libraries seem to be there but are not installed, only Blynk seems to have them



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Now I will try to install

Added after 22 [minutes]:

This is what it looks like after installing the library




And this is how it looks after compilation , an error message pops up




And here after uploading the example skech as it is in the Arduino program and it works. So in the earlier one something is not set right

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I am now going to upload my program to Blynk to control the relays. This program has worked correctly before

Added after 4 [hours]:

After struggling with the program for a few hours, I finally managed to connect to both one and the other module.
Thank you for your help

The libraries seem to be there but are not installed, only Blynk seems to have them





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Now I will try to install

Added after 22 [minutes]:

This is what it looks like after installing the library




And this is what it looks like after compilation , an error message pops up




And here after uploading the example skech as it is in the Arduino program and it works. So in the earlier one something is not set right



I am now going to upload my program to Blynk to control the relays. This program has worked correctly before

Added after 4 [hours]:

After struggling with the program for a few hours, finally managed to connect to both one and the other module.
Thank you for your help

Added after 1 [minute]:

After correctly installing the libraries and selecting the module appropriately ( each is different ), it was possible to connect and program both.