[SOLVED] Serial Monitor shows bad characters

hi;
i have esp8266 wi-fi module( here picture ).
i want upload , program code on using arduino version 1.6.9:

code: [select]


void setup()
{
  serial.begin(9600);
  serial.write("hello world");
}

void loop()
{
}

but when upload on bad characters on serial monitor ( here is picture of bad chars ) try other baud rates not working.my settings here

do serial.print or serial.println (if want go next line after printing) instead of write.

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