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ISSN No:-2456-2165
Types of Disability;
Enable/Key Pin
The only pin that distinguishes the HC-05 from the
others is the enable/key pin. It is useful to use an external
signal to switch the device between data and command
mode.
Button Pin
The command and data mode states can be changed
using a button on the module.
LED Pin
The LED will aid in visualizing the various states of
the HC-05 module [4].
Fig 7 HC 05 Bluetooth Module
C. IR Sensors:
This module includes a complete radio transceiver A sensor that produces infrared light to sense certain
and baseband, making Bluetooth connectivity simple to features of its environment is an electrical gadget. Both the
implement in a wide range of embedded systems and heat and motion of an item can be measured by an IR sensor.
devices. The module is powered by a 3.3- to 5-volt power These kinds of sensors, also known as passive IR sensors,
supply and works with a variety of microcontrollers and don't emit infrared radiation; instead, they merelymeasure it.
other embedded systems. A popular Bluetooth module Typically, all objects in the infrared range emit some kind of
known as the HC-05 can provide two-way (full-duplex) thermal radiation.
wireless connectivity to your projects.
E. Voice Module
The Voice Recognition Module is a small, easy-to-use
speaking recognition board. This speaker-dependent module
supports up to 80 voice commands. Any sound can be
trained to function as a command. Before the module can
recognize any voice command, users must first train it.
Voice commands are grouped in a large group, much like
books in a library.
Fig 9 Power supply circuit diagram In this case, the APR33A3 speech module is used. The
APR33A series IC, a powerful audio processor, is coupled
Fig 9 Shows the Power Supply Circuit Diagram and with high-performance analog-to-digital converters (ADCs)
the Components as Follows: and digital-to-analog converters (DACs) on the 8-Channel
Voice Record and Audio Playback Board8.5
Transformer
This component converts high-voltage alternating
current (115 VACS, 60 Hz) to a lower-voltage alternating
current level (typically 12-24 VAC). The transformer is
made up of a primary coil that is connected to the input
voltage and a secondary coil that delivers the lower voltage
alternating current output.
F. Raspberry Pi OS
All Raspberry Pi models can run the official operating
system, Raspbian. The OS was copied to the SD card using
Win32DiskImager, and the installation was checked using
VNC viewer Operating the Raspberry Pi OS in Windows
OS required the use of the VNC viewer editor.
VCC
This pin is responsible for powering the module. It
should be powered by a 5V supply.
GND
This pin is used to connect the module to the ground. It
should be connected to the circuit's ground.
Fig 12 Electronic speaking device Fig 14 Result for input command ‘1110’
Table 1 shows the gesture recounted output in the In Fig 14 bending the thumb is shown as a hand
sentences corresponding to the given input handgesture in gesture, and "come fast" is the output message.
the form of binary code.
VI. ADVANTAGES
Table 1 Result Table
Sl.Hand
No. Gesture (Binary Code)
Gesture RecountedOutput The communication between a normal person and a
0 0000 Good morning speech-impaired person becomes easier.
1 0001 Good day As we are using the display to show the user command
2 0010 Good afternoon so one speech-impaired person can also communicate
3 0011 Good evening with a deaf person.
4 0100 Good night There is an option for user input.
5 0101 May I Come In This device is portable and compact; the user can bring
6 0110 May I Drink someWater it anywhere he/she wants
7 0111 I want water
8 1000 I will come later VII. CONCLUSION AND FUTURE WORK
9 1001 I will do it later
10 1010 Well done The hardware protocol for speech-impaired individuals
11 1011 Let’s go utilizing hand gestures will be a useful tool and aid in
12 1100 Goodbye communication in workplaces and the public sector. By
13 1101 What is that? making it simple for people to communicate with them, the
14 1110 Come fast system will be able to successfully convert hand signals.
This project seeks to close the communication gap between
the quiet society and the rest of society. The gesture
symbol's potential to be an associated autonomous system
that applies to shared living areas is this project's most
noteworthy characteristic. Only a few commands can be
used with this system. The following is expandable in the
future to include more commands. The use of two gloves in
place of one is also possible with 16 modules.