Published March 11, 2021 © CC0

Bluetooth smart led

When someone passes nearer to the device then it asks for a password if we give a correct password then it works.

IntermediateProtip217

Things used in this project

Hardware components

Bluetooth Low Energy (BLE) Module (Generic)

PIR Motion Sensor (generic)

3 mm LED: Red

Software apps and online services

Arduino IDE

Story

When a person passes nearer to it then it sends msg to the user's mobile and asks to enter the password if the user puts the correct password then the

led will on.

you have to install one app call Arduino Bluetooth from playstore. And in this app, you will get the message.

app view

Code

Bluetooth smart led

#include <SoftwareSerial.h>
SoftwareSerial HM10(8, 9); // RX = 8, TX = 9
char appData;  
String inData = "";
void setup()
{
  Serial.begin(9600);
  Serial.println("HM10 serial started at 9600");
  HM10.begin(9600); // set HM10 serial at 9600 baud rate
  pinMode(13, OUTPUT); // onboard LED
  digitalWrite(13, LOW); // switch OFF LED

}

void loop()
{
  HM10.listen();  // listen the HM10 port
  while (HM10.available() > 0) {   // if HM10 sends something then read
    appData = HM10.read();
    inData = String(appData);  // save the data in string format
    Serial.write(appData);
  }

 
  if (Serial.available()) {           // Read user input if available.
    delay(10);
    HM10.write(Serial.read());
  }
  if ( inData == "F") {
    Serial.println("LED OFF");
    digitalWrite(13, LOW); // switch OFF LED
    delay(500);
  }
  if ( inData == "N") {
    Serial.println("LED ON");
    digitalWrite(13, HIGH); // switch OFF LED
    delay(500);
    digitalWrite(13, LOW); // switch OFF LED
    delay(500);
  }
}

Credits

tojo_kool

1 project • 0 followers