Smart Pill Dispenser

A user-friendly device designed to help individuals manage their medication schedules. The dispenser uses Bluetooth connectivity to interact with an Android app, allowing users to set medication timings and receive reminders.

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Table of Contents

1. Introduction
2. Features
3. Hardware Components
4. Software Components
5. System Overview
6. Setup Instructions
7. Usage
8. Code Explanation
9. Screenshots
10. Future Improvements

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Introduction

Managing medications can be challenging for individuals with complex schedules or multiple prescriptions. This Smart Pill Dispenser simplifies the process by automatically dispensing pills at pre-set timings and notifying users through a connected Android app.

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Features

• Automatic Dispensing: Dispenses pills at specific times of the day (morning, afternoon, and night).
• Bluetooth Integration: Allows users to set schedules via an Android app.
• Visual and Audio Alerts: LCD display shows reminders, and a buzzer provides audio notifications.
• Compact Design: Built with an Arduino Nano for portability.

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Hardware Components

Component	Purpose
Arduino Nano	Main microcontroller.
HC-05 Bluetooth Module	Enables communication with the Android app.
Servo Motor (180°)	Controls the dispensing mechanism.
16x2 I2C LCD	Displays medication timings and alerts.
Buzzer	Provides audio notifications.
RTC DS3231	Keeps track of real-time schedules.
Buck Converter	Powers the system using a DC adapter.

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Software Components

Component	Description
Arduino IDE	Used for programming the Arduino Nano.
Android Studio	Used for developing the Android app.

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System Overview

This system consists of two main parts:

1. Hardware: A dispensing unit controlled by an Arduino Nano.
2. Software: An Android app to configure and manage schedules.

The device operates as follows:

1. The user sets the schedule (morning, afternoon, night) using the Android app.

2. At the scheduled time, the dispenser:

   • Rotates the servo motor to dispense pills.
   • Plays a buzzer sound for a few seconds.
   • Updates the LCD display to show a reminder.

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Setup Instructions

Hardware Assembly

1. Connect the Components:

   • Attach the HC-05 Bluetooth module to the Arduino Nano.
   • Connect the servo motor to the servo pin.
   • Wire the RTC DS3231 and LCD using the I2C interface.
   • Add the buzzer to the designated pin.

2. Power Supply:

   • Use a DC adapter with a buck converter to provide stable power to the system.

Software Setup

1. Install Arduino IDE:

   • Install the required libraries: Servo, Wire, LiquidCrystal_I2C, RTClib, and SoftwareSerial.
   • Upload the provided Arduino code to the Nano.

2. Install the Android App:

   • Build the app in Android Studio and install it on your smartphone.
   • Pair the phone with the HC-05 module.

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Usage

Setting Timings

1. Open the Android app and connect to the dispenser via Bluetooth.
2. Set the desired timings for morning, afternoon, and night.
3. Save the schedule.

Receiving Alerts

• At the scheduled time:

  • The servo motor rotates to dispense pills.
  • A buzzer sounds, and the LCD displays the reminder.

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Code Explanation

Arduino Code Overview

#include <Servo.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <RTClib.h>
#include <SoftwareSerial.h>

Key Functions:

• updateDisplay(): Updates the LCD with the current time and schedule.
• checkReminders(): Checks if it's time to dispense medication.
• triggerReminder(): Activates the servo motor and buzzer.

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Screenshots

1. Device Setup

2. Android App Interface

3. LCD Display

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Future Improvements

• Add a sensor to detect low pill levels.
• Include multiple compartments for different medications.
• Enable remote monitoring through a cloud-connected app.

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