I am unable to connect to the ESP8684 module for flashing using esptool.py. When attempting to run the flash_id command,

[Accound]

Here is the schematic

1.png (414.11 KiB) Viewed 955 times

2.png (214.14 KiB) Viewed 955 times

[Accound]

“Serial communications are very sensitive to noise. Adding a capacitor (e.g. 10 µF electrolytic and 0.1 µF ceramic) close to the ESP8684 module power pins can help smooth out any voltage fluctuations.” The customer tried this but the issue was not resolved

3.png (168.6 KiB) Viewed 955 times

[Accound]

The picture shows modules 01 and 03. We have replaced the chips in some places. Module 01 is not programmed again with chip 03, and module 03 works with chip 01. In other words, the problem is in the module components and assembly. We tried to replace the quartz of module 01 with quartz of 03. But this did not help either. We have tried various ways, and we suspect that the chip or the module passive components are defective.

4.png (171.42 KiB) Viewed 955 times

[Accound]

ESP8684-WROOM-01C-H2

ESP8684-WROOM-03-H2


This is the 03 module with the replacement chip

5.png (136.64 KiB) Viewed 955 times

[Accound]

This is 01, the chip is from 03 module. It does not work

6.png (132.99 KiB) Viewed 947 times

[Accound]

Some components are missing from this module (marked in red). I don't know if they are mandatory

7.png (130.66 KiB) Viewed 947 times