Find Me: Smart Item Locator with Arduino and Bluetooth

Necessary tools and machines

	Soldering iron (generic)
	Hot glue gun (generic)

About this project

Overview

By attaching the Find Me to any item, you can ring your missing item simply by clicking a button from your smart phone, using the app to locate it in seconds.

Step 1: How it works

1) Attach this find me key chain to any of the devices ex; keys , wallet, etc.

2) Pair this device with your mobile phone

3) when ever you want press find button on your smart phone the find me rings and helps you to find the missing thing

Step 2: List of components

• Arduino Pro Mini or Arduino Nano

• HC-06 Bluetooth module

• Small LiPo battery

• Small Piezo electric buzzer

• Battery charging circuit

• Empty Tic Tac box or any small box

Step 3: Tools required

• soldering iron

• some wires

• glue

Step 4: Connections

Bluetooth to Arduino

• VCC 🠦 VCC

• GND 🠦 GND

• TX 🠦 RX

• RX 🠦 TX

Buzzer to Arduino

• GND 🠦 GND

• +VCC 🠦 DIGITAL PIN 5

Battery to Arduino

• + 🠦 VCC

• - 🠦 GND

Step 5: Arduino Code

Step 6: Android App

Bluetooth Controller: you can get this app in the Play Store

https://play.google.com/store/apps/details?id=apps.BT&hl=en

Step 7: Config the app

After installing the app, you will get some thing like this. Go to set keys, and set the find key value to u and stop key value to s.

DO NOT CHANGE THE VALUES

Step 8: Finishing

Now embed all the circuits into the box and hook up a ring to it. If you want, you can also add a vibrator parallel to the buzzer pins. Because if the head of the buzzer is closed, you won't be able to hear it properly.

Now you are done with "Find Me".

I hope you like this project. And if so, don't forget to vote me.

If you guys have any problems, please post a comment. Thank you :)

Code

• buzzer.ino

buzzer.inoArduino

int outPin = 5;  // connect buzzer to pin 5
void setup(){
Serial.begin(9600);
pinMode(outPin,OUTPUT);
}
void loop(){
  if (Serial.available()){
  char bt = Serial.read();
  if(bt == 'u'){    // buzzer on       
digitalWrite(outPin,HIGH);
 }
  else if (bt == 's'){    // buzzer off  
digitalWrite(outPin,LOW);
 }
  }
}