International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 05 | May -2017
p-ISSN: 2395-0072
www.irjet.net
Smart writing board Amruta B. Sawle1, Nikita D. Ghanghav2, Nikita T. Bhoir3, Sarika N. Patil4 1Amruta
B. Sawle, student, B.E. (E&TC), NMIET-Talegaon, Pune D. Ghanghav, student, B.E. (E&TC), NMIET-Talegaon, Pune 3Nikita T. Bhoir, student, B.E. (E&TC), NMIET-Talegoan, Pune 4Sarika N. Patil, Asst. Professor, E&TC, NMIET-Talegoan, Pune
2Nikita
---------------------------------------------------------------------***--------------------------------------------------------------------2.1 Handheld unit Abstract – Technology is changing the way our life functions and if it’s good for us, then why not go for it! Use of multimedia devices is very common in these days for classroom teaching. The traditional way of teaching uses chalk board system that produces chalk dust which causes air pollution. Some students and teachers caught by allergic reaction due to chalk dust. Whereas, due to use of technology in classroom for education built more interaction between teacher and students. The smart board saves you from distress and won’t let you develop any health issues later. This project is mainly concerned to the effective use of technology for teaching purpose. It includes two units. The handheld transmitting unit is portable and controlled by user. The remote receiving unit consists of Raspberry-Pi board. When teacher writes on handheld touch screen using stylus, the signals get converted into electrical signal and transmitted to ARM 11 board via Bluetooth. The remote unit receives, processes and displays it on screen using projector. Key Words: Atmega-16, Raspberry-Pi, Wireless, Bluetooth, Python.
1. INTRODUCTION
Though the technology has been everywhere, In India teachers are still using chalk board system for teaching purpose. Every time when teacher wants to write or draw something, he has to approach to the board. We all are familiar with the allergies due to chalk dust. Also there are many electronic types of equipment like computer which are dust sensitive. Companies like Hitachi and Panasonic manufactures smart boards but these boards are very costly. The proposed system make possible to write on board remotely. In this AVR Atmega-16 and Raspberry-Pi are used in two units. Anything which is written or drawn on the resistive touch screen gets converted to the electrical signal. It is then transmitted by the Bluetooth module connected to Atmega-16. The signal received by Raspberry-Pi is then displayed on the screen through projector which is connected to the HDMI port of Raspberry-Pi module.
The resistive touch screen senses the touch and the electrical signal equivalent to the resistive signal are processed by Atmega-16 controller. This signal is transmitted by Bluetooth wirelessly.
Fig-1: Block diagram of handheld unit
2.2 Remote unit The remote unit consists of Bluetooth connected to Raspberry-pi which receives the transmitted electrical signal and process it. The projector is connected to Raspberry-pi board via HDMI port. The projector displays the processed data on the large screen.
2. SYSTEM OVERVIEW The proposed system consists of two subunits. The handheld transmitting unit consists of Atmega-16, touch screen and Bluetooth for wireless transmission of signal. Remote receiving unit is consisting of Raspberry-Pi module 3, projector connected to the HDMI port and screen. © 2017, IRJET
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Fig-2: Block diagram of remote unit
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