ESP8266 Community Forum

- Sat Feb 13, 2016 10:07 am #41038 Hello everybody,

last week my ordered ESP8266 devices finally arrived and I started to work with it today. My plan was to connect the ESP to a switch and connect to a server, when the switch is activated. But first of all I have a huge problem connecting the ESP to my Win 10 desktop PC. I'm a fairly new to serial communication between devices, please be patient.

I own a 3,3V USB to serial adapter, with FTDI FT232RL chip on it, to connect to the ESP8266. At first I connected them like in the link below. But I didn't get any results ( using neither putty nor termite worked)

http://www.instructables.com/id/Blink-f ... mware-SDK/

Looking for solutions to my problem I found out, that the power supply from the adapter could be to low, so I used a 600mA power supply and a voltage regulator to supply the ESP with sufficient power. The voltage supply is constantly at 3.3V and red LED on. Now I tried again and got a line of signs in the terminal and the blue LED temporarly flashes. So I changed the baud rate to every possible value, but nothing happend. When I disconnect ch_pd vom VCC this stops and the blue LED is constantly on. But I don't get any answers on AT commands.

What I also did: Testing different ESPs, Connecting GPIO 0 to GND/VCC and checked the TX/RX Voltage of the adapter (3,3V).

Can anybody help me connecting the ESP8266 to my PC?

Many Thanks in advance!

- Sun Feb 14, 2016 1:09 am #41081 hey buddy,
i faced same problem. but now i'm here

first of all just short RX and TX pins of module that u used.and check that you receive data that you transmit on serial window.
and one more thing use arduino serial monitor OR if any other >> run with administer

common both GND (USB to ttl's AND esp's)
GPIO^00 = 3.3v (normal using)
GPIO^00 = GND (for flash OR burn firmware)
GPIO^02 = 3.3v
GPIO^CH_PD = 3.3v
GPIO^15 = GND
baud rate must be 9600
put button between RST and GND for reset module
that's it.

i prefer that you change only GPIO^00 >>3.3 OR GND
other pins as i say

- Sun Feb 14, 2016 4:27 am #41090 Finally it's working! Thank you very much. I think common the grounds of ESP and TTL solved the problem. Now I can get started.