Arduino pro micro connect gsm 800l and rcwl 0516

Using Arduino Programming Questions
1

I want when the rcwl 0516 detects movement the gsm 800l module makes a call to the number. The sensors are working properly but when I load the code the call is not made. The voltage is supplied accordingly.

t#include <SoftwareSerial.h>

// Define software serial port for SIM800L communication
SoftwareSerial gsmSerial(10, 11);  // RX, TX (use appropriate pins for your setup)

// Pin connected to RCWL-0516 OUT pin
const int motionSensorPin = 2;

// Phone number to call
const String phoneNumber = "+995505052";

// Variable to keep track of motion detection state
bool motionDetected = false;

// Variable to keep track of the last motion detection time
unsigned long lastMotionTime = 0;

// Delay between motion detection and making a call (e.g., 5 seconds)
const unsigned long motionToCallDelay = 5000;

// Delay between calls (e.g., 30 seconds)
const unsigned long callDelay = 30000;

// Flag to indicate if a call is in progress
bool callInProgress = false;

void setup() {
  // Initialize Serial for debugging
  Serial.begin(9600);

  // Initialize software serial for GSM module
  gsmSerial.begin(9600);

  // Set motion sensor pin as input
  pinMode(motionSensorPin, INPUT);

  Serial.println("Setup complete.");
}

void loop() {
  // Check if motion is detected
  if (digitalRead(motionSensorPin) == LOW) {
    if (!motionDetected) {
      Serial.println("Motion detected!");
      motionDetected = true;
      lastMotionTime = millis();
    }
  }

  // Check if enough time has passed since motion was detected
  if (motionDetected && (millis() - lastMotionTime >= motionToCallDelay) && !callInProgress) {
    makePhoneCall();
    motionDetected = false;
  }

  delay(100);  // Short delay to avoid bouncing issues
}

void makePhoneCall() {
  Serial.println("Dialing number...");
  gsmSerial.println("ATD" + phoneNumber + ";");
  
  // Increased delay to ensure the command is sent and processed
  delay(5000);  

  // Read the GSM module response
  while (gsmSerial.available()) {
    char c = gsmSerial.read();
    Serial.write(c);
  }

  Serial.println("In call...");
  callInProgress = true;
  delay(20000);  // Adjust this delay based on the desired call duration

  Serial.println("Hanging up...");
  gsmSerial.println("ATH");

  callInProgress = false;
}
2

I can not help you with your problem.

Why? The Pro Micro has a free UART on the Tx/Rx pins; use that instead of SoftwareSerial.

1 Like
3

how do you power the gsm 800l module?
when transmitting it can take a couple of amps which could overload the pro micro

4

It blinks once every 3 seconds and as I heard it should blink once every 9 seconds to work properly. I supply the correct voltage but it still flashes once every 3 seconds

5

When I test only the gsm 800l module, it makes a call, but no matter what result I want to get, when I load the code, it no longer calls the number.