digispark_sim800l_motionsensor.ino

gistfile1.txt

// This code uses an Attiny85 chipset on a Digispark board with a SIM800L module and a generic radar motion sensor

#include <Wire.h>
#include <SoftSerial.h>
#define RX_PIN 1  // P1 as RX
#define TX_PIN 2  // P2 as TX
#define DATA 3
SoftSerial sim800l(RX_PIN, TX_PIN);

int PIRState = 0; // whatever sensor you want to use

void setup()
{
  sim800l.begin(9600);
  delay(1000);
  pinMode(DATA, INPUT);
  sim800l.println("AT");
  delay(50);
  sim800l.println("ATH"); //hang up
  delay(8000);
}

void loop()
{
  PIRState = digitalRead(DATA);

  if (PIRState == HIGH) {
    //Serial.println("Sensor detects motion");
    Call(); // call every time motion is detected
    delay(1000); // Delay for stability
  } else {
    //Serial.println("No motion detected");
    delay(50);
  }
}

void Call()
{
  sim800l.println("ATD+ 989300000000;"); //replace with your countrycode and phone number to be called
  delay(5000);
  // sim800l.print("Security alert | Intruder detected!");
  sim800l.write(26); // Send Ctrl+Z to indicate end of call
  delay(500); // Give time for the module to process
}