Project Based Learning Report
on
“CLAP SWITCH”
In partial fulfillment of requirements for the degree of
Course Code: EC19.111
Course Title: ELECTRONICS
Submitted by
Vasudha Jain
Yahi Jindal
Yashika Harlalka
Leeha lalwani
Pragya Tomar
Department of Computer Science and Engineering
SCHOOL OF ENGINEERING AND TECHNOLOGy
Mody University of Science and Technology
Lakshmangarh, Distt. Sikar-332311
June ,2023
CERTIFICATE
It is certified that Vasudha Jain,Yashi Jindal ,Yashika Harlalka ,Leesha Lalwani ,Pragya
Tomar .B.Tech.(2nd semester) student from SET, Mody University, Lakshmangarh, has under
gone project based learning (PBL) on “Clap Switch” for the partial fulfillment towards the
degree of Bachelor of Technology (B.Tech) in Computer Science and Engineering. She has
successfully completed the PBL work for the current semester under my/our supervision.
Mrs. Jeetu Sharma
Mr.Rajeev Pourush
1
Acknowledgement
I sincerely express my gratitude to my guide/trainer for her benevolent guidance in
completing the report on Clap Switch . Her kindness and help have been the source of
encouragement for me.
I am grateful to her for the guidance, inspiration and constructive suggestions that helpful us
in the preparation of this project.
Vasudha Jain
Yashi Jindal
Yashika Harlalka
Leesha Lalwani
Pragya Tomar
2
LIST OF FIGURES
ABSTRACT
This paper presents the design of a clap activated switch device
that will serve well in different phono-controlled applications,
providing inexpensive key and at the same time flee from false
triggering.This involves the design of various sages consisting of
the pickup transducer, low frequency, audio low power and low
noise amplifier, timer, bistable and switches.
Table of Contents
S. No. Topics Page No.
Certificate
Acknowledgement
Table of content
List of Figures
Abstract
1. Introduction
1.1
2. Components description (Hardware and Software
Details/Standards etc.
2.1
2.2
3. Design/ Methodology
3.1
4. Steps Performed
4.1
4.2
5. Result and Discussion
Conclusionand future scope
Reference
Introduction
This is a project on CLAP SWITCH which can switch on/off any electrical
circuit by the sound of a clap. The operation of the circuit is simple. If we
clap the lamp turns on and to switch it off clap again . The condenser
microphone picks up the sound of your claps, coughs, and the sound of that
book knocked off the table. It produces a small electrical signal which is
amplified by the succeeding transistor stage. Two transistors cross
connected as a bi-stable multi vibrator change state at each signal. One of
these transistors drives a heavier transistor which controls a lamp. This
circuit can switch on and off a light, a fan or a radio etc by the sound of a
clap.
This circuit is constructed using basic electronic components like resistors,
transistors, relay, transformer, capacitors. This circuit turns 8ON9 light for
the first clap. The light turns ON till the next clap. For the next clap the
light turns OFF. This circuit works with 12V voltage .Therefore a
step-down transformer 12V/300mA is employed. This working of this
circuit is based on amplifying nature of the transistor, switching nature
of transistor, relay as an electronic switch .Basically, this is a Sound
operated switch.
PRESENT SYSTEM: A Clap Switch circuit uses a microphone within the
circuit to detect noises to
turn the LED on. A clap switch circuit can be used in homes and businesses
to turn on
things such as: lights, TVs, or whatever it is set up to the clap switch. In
many cases
you can snap your fingers, clap your hands, or even speak to it. In fact, with
modern
technology, you can use commands to activate a piece/pieces of technology
to allow
it to turn on/off from anywhere within the room of the Clap Switch.
Propose system:
Clap activated switch device will serve well in different phono-controlled
applications. Clap switch is generally used for a light, television, radio or
similar electronic device that the person will want to turn on/off from bed.
This circuit functions on using the sound energy provided by the clap which
is converted into electrical energy by condenser microphone. Using this
converted electrical energy the led glows out.
COMPONENTS:
a. Parts:
i. 555 timer IC
ii. Two BC547 Transistor
iii. Resistor
iv.22uF Capacitor ,100nf capacitor
v. Light-emitting Diode
vi.buzzer
vii.power supply
viii. Breadboard
ix. Wires
Purpose of Parts
i. 555 timer IC is used to timing function, such as turning the LED on for a
short period of time.
ii. The BC547 transistor is used for amplification.
iii. Anode/ Collector of the transistor in pin 1.
iv. Base of the transistor is pin 2.
v. Cathode/Emitter of the transistor is pin 3.
vi. The 270 Ω resistor determines the order at the output and the sensitivity.
vii. The 22uF capacitor allows the LED to stay on for approximatively 2.5
second.
Procedure
i. Connect the power supply and breadboard together to set the voltage to 5
volts.
ii. Connect the ground to the breadboard
iii. Connect one terminal of the 3.3kΩ resistor.
iv. Connect the positive end of the condenser microphone to the voltage
source and place the negative end of the condenser microphone to the
resistor.
v. Connect the base of the BC547 transistor to the condenser microphone.
vi. Connect the emitter of the transistor to the ground.
vii. Connect the resistor to the voltage source and the collector of the
transistor.
viii. Place the second BC547 transistor onto the breadboard.
ix. Connect the collector of the first BC547 transistor to the base of the
second BC547 transistor.
x. Connect the emitter of the second BC547 transistor to the ground.
xi. Place the 555 timer IC onto the breadboard.
xii. Connect pin 6 with pin 7 of the 555 timer IC.
xiii. Connect pin 4 with pin 8 of the 555 timer IC.
xiv. Connect the 100k-ohm resistor to pin 7 and pin 8.
xv. Connect the anode of the 20uF capacitor to pin 6 of the 555 timer IC.
xvi. Connect the cathode of the 20uF capacitor to the ground.
xvii. Connect a LED to pin 3 of the 555-timer.
xviii. Connect a 270-ohm resistor to the cathode of the LED and to the ground.
xix. Connect pin 1 of the 555-timer to the ground.
xx. Connect pin 4 of the 555-timer to the voltage source.
xxi. Connect a 1k-ohm resistor to the anode and the voltage source.
xxii. Connect a 100nF Capacitor to the anode of the second transistor and into
pin 2 of the 555-timer IC.
APPLICATION AND FUTURE
SCOPE
Clap activated switch device will
serve well in different phono-controlled
applications. Clap switch is generally used
for a light, television, radio or similar
electronic device that the person will want
to turn on/off from bed. The primary application involves elderly or physically
disabled person. The major advantage of a
clap switch is that you can turn something
(e.g., a lamp) on and off from any location
in the room (e.g., while lying in bed) simply
by clapping your hands.
Here we Have done a simple home-based
simple clap switch with commonly used
electrical components.
This circuit can be made further as more
accurate and more sensible. By increasing
the sensitivity, the amplification from the
circuit may be increased and used in some
modified circuits.
RESULTS :
We constructed the circuit as per circuit diagram and we verified the clap
switch circuit. i.e when sound occurs near by the circuit the led in the circuit .
CONCLUSION:
The clap activated switching device function properly by responding to both
hand claps at about three to four meter away and finger tap sound at very close
range, since both are low frequency sounds and produce the same pulse wave
features. The resulting device is realizable, has good reliability and it’s
relatively inexpensive. By using some modification it area of application can
be extended in various fields. It can be used to raised alarm in security system
with a noise ,and also used at the place where silence needed.
glows and then it turns OFF after some time.
REFERENCES
http://www.electricaltechnology.org/2014/10/clap-switch-circuit-electronic-pro
ject.html
http://www.circuitsgallery.com/2011/10/clap-switch-circuit-using-555.html
http://circuitdigest.com/electronic-circuits/clap-switch-project
http://www.buildcircuit.com/clap-switch2/
