Automated Delivery System

Robotics NIBM Project - A sophisticated automated sorting and delivery system featuring a smart conveyor belt and a mobile delivery robot.

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System Overview

The Automated Delivery System is designed to streamline the process of measuring, categorizing, and delivering packages based on their physical dimensions. The project consists of two primary modules:

1. Conveyor Sender Module: Detects incoming boxes, measures their width and height using ultrasonic sensors, categorizes them, and moves them forward.
2. Robot Receiver Module: (Work in Progress) Receives the categorized items and delivers them to their designated destinations.

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Features

• Automatic Box Detection: Uses IR sensors to detect when a box enters the measurement zone.
• Precision Measurement: Dual HC-SR04 Ultrasonic sensors for horizontal and vertical dimension calculation.
• Smart Categorization:
  • Small (Type A): <= 3cm
  • Medium (Type B): <= 6cm
  • Large (Type C): <= 8cm
• Real-time Feedback: I2C LCD (16x2) displays current status, measurements, and box type.
• Industrial Control: PWM-based motor speed control for smooth conveyor operation.

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Hardware Components

Component	Purpose
Arduino Uno / Nano	Central Control Unit
HC-SR04 (x2)	Ultrasonic Distance Measurement
IR Obstacle Sensor	Box Detection Trigger
L298N Motor Driver	Conveyor Belt Speed & Direction Control
I2C LCD (16x2)	Status & Measurement Display
DC Gear Motor	Conveyor Belt Power

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Pin Mapping (Conveyor Sender)

Sensor/Actuator	Arduino Pin
IR Sensor	Pin 2
Ultrasonic 1 (Trig)	Pin 4
Ultrasonic 1 (Echo)	Pin 3
Ultrasonic 2 (Trig)	Pin 6
Ultrasonic 2 (Echo)	Pin 5
Motor Speed (ENB)	Pin 9
Motor IN3	Pin 10
Motor IN4	Pin A0
LCD I2C	SDA (A4), SCL (A5)

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Getting Started

1. Prerequisites

• Arduino IDE installed.
• Required Libraries:
  • Wire.h (Built-in)
  • LiquidCrystal_I2C.h

2. Installation

1. Clone the repository:

   git clone https://github.com/adeshasur/Automated-Delivery-System.git

2. Open Conveyor_Sender/Conveyor_Sender.ino in Arduino IDE.
3. Select your board and port, then click Upload.

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Calibration

You can adjust the measurement thresholds and empty space values in the Conveyor_Sender.ino file:

int emptySpaceWidth = 9;   // Distance to the side wall (cm)
int emptySpaceHeight = 12; // Distance to the top sensor (cm)

int smallBox = 3;   
int mediumBox = 6;   
int largeBox = 8;

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Roadmap

• Initial Conveyor logic implementation.
• Box categorization system.
• Implement Robot_Receiver communication logic.
• Add line-following or obstacle avoidance for the delivery robot.
• Battery level monitoring for the receiver module.

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Contributing

Contributions are welcome! Feel free to open an issue or submit a pull request.

License

This project is licensed under the MIT License - see the LICENSE file for details.

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Developed by Adheesha Sooriyaarachchi