Input and store user input to set a variable

Projects Programming
1

Hello Everyone,
I have a project with SIM800L, Keypad(4x4) and LCD(16x2). I want to input phone number with keypad(number phone - 12 digits) show to LCD, set that to a variable to send sms to another number phone. Please help me complete project, Thank you!

2

Please show us your work to date.

Always show us a good schematic of your proposed circuit.
Show us a good image of your ‘actual’ wiring.
Give links to components.

In the Arduino IDE, use Ctrl T or CMD T to format your code then copy the complete sketch.

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1 Like
3

I'm a newbie and i just coding arduino recently. My project now complete call and send sms to someone, but i need to change the phone number to another and set as a variable when i need. i don't know this.

4 
#include <SoftwareSerial.h>

//Create software serial object to communicate with SIM800L
SoftwareSerial mySerial(3, 2); //SIM800L Tx & Rx is connected to Arduino #3 & #2
const int pinButton = 11;
int running = 0;
void setup()
{
  pinMode(pinButton, INPUT);

  //Begin serial communication with Arduino and Arduino IDE (Serial Monitor)
  Serial.begin(9600);
  
  //Begin serial communication with Arduino and SIM800L
  mySerial.begin(9600);

  Serial.println("Initializing..."); 
  delay(1000);

  mySerial.println("AT"); //Once the handshake test is successful, it will back to OK
  updateSerial();

}

void loop()
{
    int stateButton = digitalRead(pinButton);
    if (stateButton == 1 && running == 0)
    {
    Serial.println("BUTTON PRESSED");
    updateSerial();
    mySerial.println("AT+CMGF=1"); 
    updateSerial();
    mySerial.println("AT+CMGS=\"+phone number\"");
    updateSerial();
    mySerial.print("Message"); 
    updateSerial();
    mySerial.write(26);
    delay(100);
    running ++;
    delay(100);
    }
    else if (stateButton == 1 && running >= 1 && running <= 6)
    {
    mySerial.println("ATD+ +phone number;");
    delay(1000);
    updateSerial();
    delay(60000);
    mySerial.println("NO ONE PICKUP");
    delay(100);
    mySerial.println("ATH"); //end call
    delay(500);
    updateSerial();
    delay(100);
    mySerial.println("END CALL");
    delay(500);
    running ++;
    delay(1000);
    }
   else
    { 
    Serial.println("END CODE");
    }
  delay(500);
}

void updateSerial()
{
  delay(500);
  while (Serial.available()) 
  {
    mySerial.write(Serial.read());//Forward what Serial received to Software Serial Port
  }
  while(mySerial.available()) 
  {
    Serial.write(mySerial.read());//Forward what Software Serial received to Serial Port
  }
}
6

Please edit your post #4, select all code and click the <CODE> button to apply so-called code tags and next save your post. It makes it easier to read, easier to copy and the forum software will display it correctly.

7

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