Abstract:
This paper presents a new tool for
teaching the alphabets and numbers of different
languages to children. This device is made with a
large 32X32 Matrix Display, with the ability to
show alphabets of different languages and
numbers with feedback sounds, it can be
controlled using voice commands, TV remote
control, and an android application in a
smartphone. Moreover, the device is designed in
such a manner, to display a real-time clock at the
first run. To obtain data such as time and
calendar, an RTC (Real-Time Clock) module is
interfaced with Arduino Mega 2560. To display
each character on 32X32 Matrix display, the
monochrome bitmap format of each character was
taken and converted into the required format
using the software called “LED Matrix Studio”.
Based on the UART communication protocol,
mobile and voice command controls are executed
through HC 05 Bluetooth Module. Further, the TV
remote sends a code to the IR receiver in NEC
format for each button that is pressed. Since the
power consumption of the device is quite low, it
can be used in places where the famine of
electricity has empowered. The device can be
added with some additional features, such as
music, animation, mathematical search. A noisy
environment will affect the operation of the device
for voice commands. Although, the device will
make learning procedures easy for children and teaching procedures easy for teachers.
