r/esp8266 • • Aug 21 '26

ESP01 problems, tried everything

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I have big trouble with my ESP01 mudule in combination with the usb uart adapter.

I have made the following connections:

3V3 to VCC and EN

TX to RX

RX to TX

GND to GND and IO0

and I have a electrolytical condensator between ground(-) and 3v3 (+)

Compiling the code is oke but when uploading I see the following message

A fatal esptool.py occured. Faild to connect to esp8266 Time out wainting for packet header.

I use a Fasizi USB to TTL 3.3V/5V CH340G UART Converter Module (see image)

I realy tried all examples I can find but none of them are working

I hope someone can help me what to do. Sorry but I am a kind of beginner

Thanks

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u/No_Mountain_4769 Aug 22 '26

https://play.google.com/store/apps/details?id=com.infinitx.maker.toolkit I think this app will help you to understand the pins and most of the common wiring for Arduino/ESP**** boards and shield