ESP8266 Community Forum

- Mon Mar 28, 2016 4:31 pm #44207 Hello,

I have 2 ESP-12F board connected identically, one is working well but I can't communicate (serial) with the other, the blue led is is always on but dimmed. Does somebody know the cause of the dimmed led ????

Thanks.

- Tue Mar 29, 2016 9:30 am #44249 Bad power source? Device is continuously sending data on the serial?

- Tue Mar 29, 2016 12:38 pm #44260 You are right !!! THANKS

The power source is ok, it is the same power source than the working board so I have unsoldered the power wires on the board and I've seen the VCC trace was removed. thanks. New iron with temperature control ordered !!!