How to make call with Arduino

Hey,

In today's blog we are going to make Arduino

That make phone calls on mobile numbers.

WHAT YOU NEED :

Arduino nano

SIM800I

NPN Transistor

Breadboard

1k resistor ×4

Tact switch ×3

Wires

Battery 3.3v

SCHEMATIC :

CODE :

#include <SoftwareSerial.h>
char dane;
String Arsp, Grsp;
SoftwareSerial mySerial(10, 11); // RX, TX

int but1 = 3;
int but2 = 4;
int but3 = 5;
int onModulePin = 2;
int disc;
int call;
int number;
unsigned long nr;

const char phone_numberA[] = "+48608232450";
void setup() {
 
  Serial.begin(9600);
  mySerial.begin(4800);
   Serial.println("Starting...");

  pinMode(but1, INPUT);
  pinMode(but2, INPUT);
  pinMode(but3, INPUT);


  Serial.println("Press a button");

}void loop() {
call = digitalRead(but1);
number = digitalRead(but2);
disc = digitalRead(but3);

if(call == HIGH)
{delay(200);
 Serial.println("making call");
 String cmd;
 cmd = "ATD";
 cmd += ("+48");
 cmd += nr;
 cmd += ";";
 mySerial.println(cmd); 
}if(number == HIGH)
{
 delay(200);
 Serial.println("nr choosed");
 nr = 608232450;  
}if(mySerial.available())
  {
    Grsp = mySerial.readString();
    Serial.println(Grsp);
  }if(Serial.available())
  {
    Arsp = Serial.readString();
    mySerial.println(Arsp);
  }
  
  }




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