ESP8266 Community Forum

- Thu Nov 27, 2014 6:57 am #3367 Hello,
I bought 2 of ESP8266 on Ebay but for instance lighting their red LED up is the only thing I could do with them. I tried 2 different USB/Serial and 2 different Arduino boards for sending AT commands but none of them worked. My ESP8266 do not respond to any input sent to its RxD. I tried all possible speeds (9600...115200). My Vcc i 3.3V . All unused pins (GPIO...) are coneccted to Vcc. On WiFi side nothing neither happens. The chip is not detected (someone wrote that it should be displayed on WiFi as an access point). Is is probably 2 ESP being out of order ? Maybe I'm doing something wrong ?
Any idea... ?
Thanks in advance.
Jacques

- Thu Nov 27, 2014 1:35 pm #3398 Hi

i have also problem like jacques.

But, i connect VCC-->VCC (3.3V), GND-->GND, PD --> VCC (3.3), RX-->TXO, TX-->RXI. I wire to a ardunio mini pro and also to a FTDI. On ardunio, i run the blink-sketch. For serial teminal i try some applications, now i use Terminate 3.1. I use the settings: 9600,8,n,1 and CR/LF.

if i power on the board, i get the following:
0[1D]×[0E][05]þ[15][06]‚‡,‡JŽŽ[16]‡ŠŽû[0C]‡[1E][07]LŽþ(‡š[06]
[Vendor:www.ai-thinker.com Version:0.9.2.4]

ready

But if i try to send any AT-command, i dont get any reaction:
0[1D]×[0E][05]þ[15][06]‚‡,‡JŽŽ[16]‡ŠŽû[0C]‡[1E][07]LŽþ(‡š[06]
[Vendor:www.ai-thinker.com Version:0.9.2.4]

ready
AT
AT+RST
AT+GMR

I see also a wifi-access-point (ESP-9E6107), that i can connect by windows. i get an ip (192.168.4.100).

Does anyone a idea, what happens?

Thanks
MrTomtom

- Thu Nov 27, 2014 5:25 pm #3417 set your terminal to map CR to CRLF

- Mon Dec 01, 2014 3:50 pm #3749 And ckeck the 3.3 volt source for ESP2866.
It must be strong enough. This was my problem at the beginning

Greetings
Francisco