Missed Call Automation with status Reply
Click on the link below to Download the Arduino sketch
Parts List
1- Arduino Nano
2-GSM module Sim 800L
3-5 Volt 10 A relay
4-2N2222A npn transister
5-PC 817 or P781 octocoupler
6-Terminal blocks
7- Red LED
8-1N4007 diode
9-220 ohm Resistance
10-330 ohm Resistance
11-Female header
12-220v AC to 5V DC 2Ampere powersupply
13-10 AFuse holder with fuse
14-10A toggle switch
15-PVC Box-6"x4" size
Arduino sketch
//Projech Name-RelayControll by missedcall with Switch status,1=ON and 0=OFF
#include <SoftwareSerial.h> //Install SoftwareSerial Library
const int relayPin=5;//connect digital pin 5 of Arduino to IN pin of Relay module
const int ledPin=6;//connect digital pin 6 of Arduino to switch indicator led
bool relayStatus=1;
bool ledStatus=1;
const String phone="+971557407961"; // with list phone include +91 or your country code
SoftwareSerial gsmSerial(7,8);//Connect RXT pin of GSM module to D8 pin on Arduino
// Connect TXD pin of GSM module to D7 pin of Arduino
String responseData;
String senderNumber;
void setup(){
responseData.reserve(200);
phone.reserve(20);
pinMode(ledPin,OUTPUT);
pinMode(relayPin,OUTPUT);
digitalWrite(ledPin,HIGH);
digitalWrite(relayPin,HIGH);
Serial.begin(9600);
gsmSerial.begin(9600);
delay(100);
gsmSerial.write("AT\r");// because of SIM800L autobounding mode
delay(100);
gsmSerial.write("AT+IPR=9600\r");
delay(100);
gsmSerial.write("AT+CMGF=1\r");
delay(500);
gsmSerial.write("AT+CNMI=2,2,0,0,0\r");
delay(100);
Serial.print(gsmSerial.readString());
gsmSerial.write("AT+CLIP=1\r\n");
delay(100);
}
void loop(){
if (gsmSerial.available()>0) {
responseData = gsmSerial.readStringUntil('\n');
Serial.println(responseData);
parse();
delay(1000);
}
}
void parse(){
if (responseData.indexOf("CLIP:")>0){
senderNumber=responseData.substring(responseData.indexOf("+CLIP: ") +8,responseData.indexOf("+CLIP: ") +21); //PARSE CALLER ID
Serial.println("Caller number :");
Serial.println(senderNumber);
if (senderNumber == phone){
Serial.println("Sender number White list : ok");
relayStatus=!relayStatus;
ledStatus = !relayStatus;
digitalWrite(relayPin,relayStatus);
digitalWrite(ledPin,relayStatus);
gsmSerial.write("ATH\r"); // disconnect call & then send SMS
gsmSerial.print("AT+CMGS=\""+phone+"\"\r");
delay(1000);
gsmSerial.print("SWITCH STATUS-");
//gsmSerial.print("Relay status 1:off 0:on ");
//gsmSerial.print(relayStatus);
gsmSerial.println(ledStatus);
delay(200);
gsmSerial.write(0x1A); // ctrl+z to send message(comment out if Receive status message)
delay(100);
}
gsmSerial.write("ATH\r");
delay(500);
}
}
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