This document describes the design of an Android-based smart carrier robot. The objectives are to develop a robot that can move on command via a smart device application or voice command, avoid obstacles using ultrasonic sensors, and carry objects using a robotic gripper. The hardware includes an Arduino, Bluetooth module, DC motors, motor driver, ultrasonic sensor, and servo motors. An Android application is designed using App Inventor to send movement commands to the robot via Bluetooth. Block diagrams and flowcharts illustrate the system design and workflow. Future extensions could include adding WiFi, more complex movements, and uses like surveillance.

1. An Android Based Smart And Carrier Robot
Presented By:
Sayed Ahamed Istiaque
ID: 15102010
Supervised By:
Mr. Amran Haroon
Assistant Professor
School of Science And Engineering
Chittagong Independent University, Bangladesh

2. Outline
Introduction
Objectives
Hardware Requirements
App Design Process
Mobile Application
Block Diagram
Circuit Diagram
Flow Charts
Project Overview
Future Scopes
Conclusion
Video

3. Introduction
This Work is based on Arduino, motor driver and
Bluetooth module.
This is a type of remote control robot, where the
ordinary micro-controller has been replaced by Arduino
and IR sensors has been replaced by a Bluetooth module.
The remote can be any android or IOS smart devices.
This project can be made in a bigger scale for real time
vehicles.
3

4. Objectives
 To develop a robot that can move on a given command
through Smart devices application or voice command.
 To incorporate capabilities that can help avoid obstacles
and cliff/edge in the path of the robot.
 To develop a robotic grip that can carry object from one
place to another.
 To be able to wirelessly control the activities of the robot.

5. Hardware Requirements
▪ Arduino
▪ Smart Device
▪ HC-05 Bluetooth module
▪ DC motor
▪ Motor driver IC (L293D)
▪ Ultrasonic sensor
▪ Servo motor
▪ Robotic chassis
▪ Wheels
▪ Power source
▪ Breadboard
▪ Connecting wires
5

6. Continued…
Arduino:
▪ The program is loaded to do the required functioning .
▪It is interfaced with Bluetooth module, Ultrasonic sensor, servo motor
and the motor driver to make the system work as required.
HC-05 Bluetooth module:
▪Any Bluetooth enabled device can communicate with this module.
▪ It is interfaced with the Arduino over serial port of Arduino.
Smart Device:
▪It has an application program running on it which enables us to send
appropriate command over its Bluetooth module to control the robot.
6

7. DC Motor: This motor is controlled with DC voltages and can move in
forward, backward, left and right direction according to the polarity
of the voltage applied.
Motor driver IC (L293D): Arduino can’t supply the current required by
DC motor to run. So to fulfill this requirement these motor driver ICs
are used.
Continued…
7

8. Continued…
Ultrasonic Sensor:
▪It uses sonar to measure distance of an object.
▪ It is a combination of both ultrasonic transmitter and receiver
module.
Servo Motor:
▪Their input is a signal that can be either analog or digital.
▪The difference between servos and the previous DC motors is
that these are closed-loop mechanisms that incorporate circuitry
and gearing.
8

9. App Design Process
 App Inventor is an EASY way to introduce programming to young
students. Google created this language, and M.I.T. improved it.
9

10. Continued…

11. Mobile Application
11

12. Programming Process
▪The IDE (Integrated Development Environment) is based on programming language
- “Processing”.
▪The code is written and uploaded to arduino using the IDE.
12

13. Block Diagram
13

14. Circuit Diagram
.
14

15. Work Flow of Android Application
15

16. Flow
Chart
16

17. Project Overview
17

18. Future Goals
 Range of connectivity can be increased by using Wi-Fi. As of now we are
using Bluetooth module which can be replaced by Wi-Fi module and can
extend range by installing routers on short distances.
 Movements and features of robot can be increased, by rotating it, and
providing it diagonal movements.
 Camera can be attached and robot can be utilized in order to be used
like a spy. More type of information and data can be transferred, head
count in a room can be established, face recognition can be made.
18

19. Conclusion
This project has the following features:
 The robot is controlled wirelessly by a mobile application.
 It has an autonomous function which can detect obstacles or edges.
 The robot can move in forward, backward, right and left directions and
also can carry objects from one place to another.
 The robot can be controlled by voice command.
This is a prototype project which can be very much useful for
handicapped people. Also, this project can have many more use cases.
19

20. 👤👦👧👨👩👪💃🏃💑😂😉😋😒😭👶
😸🐟🍒🍔💣📌📖🔨🎃🎈🎨🏈🏰🌏🔌
🔑Video
20

21. THANKS!
21