ESP8266 Community Forum

Posted: **Mon Jun 29, 2015 12:30 pm**

What voltage level on TX and RX does your FTDI-Module have? 3,3 or 5V?
I use this one. Jumper at 3,3V

FTDI.jpg

And do not power the ESP from the 3.3V of the FTDI. May work, may not.

Posted: **Mon Jun 29, 2015 12:39 pm**

3v3.
And tested with FTDI and chinee TTL to USB module too.

But im using external power for the ESP, with common GND with TTL.

Posted: **Mon Jun 29, 2015 1:21 pm**

OK,
waiting for your new ESP....

Posted: **Tue Jun 30, 2015 1:01 am**

Tested with other ESP8266-01 and working perfect!

Anyway, thanks for the help.

Any idea, how can i upload code to ESP-05?
That module have only 5 pins, need to find the ic gpio0 and connect to the ground, when uploading?

Esp8266 serial.println problem