This is my code. I am tring to make a connection to my wifi through esp8266.

#define DST_IP "" // my IP
#include <SoftwareSerial.h>

SoftwareSerial mySerial(0, 1);

void setup()
  while (! Serial); // Wait until Serial is ready - Leonardo
  if (Serial.find("OK") )

void loop()


This is the result of my code.

enter image description here

SoftwareSerial mySerial(0, 1);

try changing pin0 and pin1 with some other pins. (lets say with pin2 & pin3)

pin0 and pin1 are used by default Serial.

  • but pin0 and pin1 are my RX and TX .. is it true to work with any pin ? – Amir Hamdy Apr 22 '16 at 16:18
  • yeh, pin0 and pin1 are your RX and TX. BUT they are so, only when you are using Serial. In above mentioned line of code you are initializing another serial, mySeial, to use same pins as Serial which is the cause of error. – ARK Apr 22 '16 at 16:21
  • Thanks for replying BUT actually I use mySeial in nothing. So I removed it and still same error! – Amir Hamdy Apr 22 '16 at 16:27
  • The point is that these pins are already used for the connection to the USB serial device proxying for the host PC. You need to connect the ESP8266 to different pins, not to these. – Chris Stratton Apr 22 '16 at 17:55
  • Okay. I have set SoftwareSerial mySerial(0, 1); To SoftwareSerial mySerial(2, 3); But it always return 0 in the result which means it can not connect to the network. – Amir Hamdy Apr 23 '16 at 13:14

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