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You are here: Home / Replies / hey dude chcek these one

hey dude chcek these one

|

Microcontroller › Arduino › interfacing gsm sim900A modem with arduino uno › hey dude chcek these one

February 27, 2016 at 7:48 am #13736
rupa
Participant

void setup(){

Serial.begin(9600);

delay(200);

}

void loop()

{

Serial.println("AT");

delay(1000);

Serial.println("AT+CMGF=1");

delay(100);

Serial.println("AT+CMGS="+9779804495672"r");

delay(1000);

Serial.println("sms from arduino");

delay(100);

Serial.println(char(26));

delay(1000);

 

}

 
 

here is it simcom900a need external 12 volts supply after giving supply press the power button until u can seen  led with blue light blinks it means ur sim is working connect tx to tx and rx to rx pins of arduino and check it 

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