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2

I have:

Problem: I see SoftAP and can connecting to it. But i can't send AT-commands to ESP8266 from Arduino. I use Arduino app v.1.6.5 for send command to ESP8266 via Arduino. But i don't get answer. And ESP8266 doesn't blinking.

I use this scheme:

Scheme for connecting Arduino and ESP8266

Please, help me. I'm trying to fix this is very time consuming.

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up vote 1 down vote accepted

I had the same problem. I used SoftwareSerial library, so you should set baud rate as 115200 for communication with esp8266. It might look like this: 

#include <SoftwareSerial.h>

SoftwareSerial esp8266(2,3); 

void setup()
{
  Serial.begin(9600);
  esp8266.begin(115200);
}

It helped in my case.

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up vote 0 down vote

I had the same problem. I solved it doing the following:

Connect Arduino TX to a voltage divider (to get 3,3V) and then to TX on ESP8266 Connect Arduino RX to RX on ESP8266

It should work!.

Please read the information on this link http://rancidbacon.com/files/kiwicon8/ESP8266_WiFi_Module_Quick_Start_Guide_v_1.0.4.pdf

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1  
From memory the ESP8266 can pull more current than the Arduino can supply so you need a separate 3.3V supply. You also need 3.3V/5V logic level shifters on ALL you connections between the Arduino and the ESP, because the ESP of the different in logic levels. – Matt Oct 26 '15 at 12:57

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