Smart Pen

SMART PEN

Department of Computer Engineering

College of EngineeringAn-Najah National University

Prepared by :Saif Marwan & Osama Nabulsi

 Supervisor Name:

Dr. Luai Malhis 

Academic Year:2011 – 2012

Contents

Introduction Why This Project ??? Abstract Features Problems Implementation Recommendation Demo

Introduction

Has there ever been a more amazing invention than the pen an incredibly convenient way of recording

information that dates back thousands of years ??!!!

Why this project ??

Pens and paper are not very compatible with the technology .

Managing information in handwritten forms and hard-copy documents remains an essential task for many businesses, but is often a slow, inefficient process.

We will try to develop this idea to be compatible with more futures and multiple using with low cost.

Abstract

A smart pen is an input device which captures the handwriting or brush strokes of a user.

Converts handwritten analog information created using “IR Pen" into digital data, enabling the data to be utilized in various applications.

The data can then be interpreted by handwriting software and used in different applications or just as graphics.

Abstract Cont’d

Extended Easily to interactive smart board by converting any surface into touch screen.

Features

Smart pens are portable and reliable .

Easy to use - low training and support costs. Efficient handheld data capture that is secure and

traceable.

Multiple use , that we can use smart pen as smart digital pen or smart board.

Features Cont’d

Support high capacity storage data memory .

Reduced data entry - handwritten data is converted to text ready for processing in back office systems .

As a result, our application with its features came to provide a core for other software applications depend on handwriting or controlling project using IR position .

Problems

Detect the smart pen position .

IR sensor doesn’t exist as standalone device .

Mismatch voltage compatibility between microcontroller and IR Camera.

IR Camera give us messy data that wasn’t satisfying since the sampling rate was too slow to cope with the IR stimulus.

Problems Cont’d

Stops sending data (freezes) after working for 2-3 minutes.

File system in SD Card problem .

Convert from IR Camera coordinates to screen coordinates and calibration issues.

PIC Vs. Arduino

Implementation

Implementation IR sensor :o Extract the Wii IR camera.

Implementation Cont’d

o Interface Circuitry .

Implementation Cont’d

o built a bi-directional level shifter N-Channel MOSFET circuit converter.

Implementation Cont’d

Implementation of SD card circuit.

Implementation Cont’d

Configuration of XBee Wireless device .

Implementation Cont’d

Building IR Pen .

Implementation Cont’d

Software coding …

Microcontroller code :o Initialize I²C Bus .o Initialize SPI Bus .o SD card initialization commands .o XBee initialization commands .

Implementation Cont’d

o Reading IR camera sensor .o Storing in SD card or sending by XBee wireless.

C# application software :o SmartBoard Form.o SD card reader Form .

Recommendations

There are a huge number of applications can be implemented depending in our project such as : handwriting detecting , Signature capture supports proof of delivery or attendance, Customer, salesman, contractor … etc.

Improve detecting speed with more accuracy .

Demo