Design of wireless electric board for writing and sketching using ARM based embedded system

Abstract

Nowadays using multimedia applications is common in classroom teaching. As we know that use of chalk produces dust which pollutes air and also it is found that chalk dust causes hazardous effects on health of students and parents. In the other hand, use of multimedia helps in better teaching and learning process. Companies like Hitachi, Panasonic, are manufacturing smart equipments which can efficiently replace the traditional blackboard. This design includes two modules viz. ARM9 board processor for unit which will be controlled by user i.e. teacher called handheld Unit hardware and Embedded Linux operating system for its software. Another module is remote unit which consist of Raspberry-Pi ARM 11 Board. Teacher has to write on a notebook sized touch screen which is interfaced with ARM9 handheld unit board. Written signals are converted into electrical signals and given to ARM11 board by using wireless RF module (Zigbee). Then Arm11 board controls and processes these signals and displays the written contents by the projector in large view by interfacing projector to HDMI port provided with Raspberry-Pi. This complete module makes classroom teaching more efficient and easy for the sake of students and teachers.