The clapping sound is converted into electrical energy by the microphone and amplified by transistor t1. Simple clap switch circuit diagram using relay clap on clap. I will present two circuits for clap switches, both of these circuits will be based on 555 ic and 4017 ic. High sensitive clap operated switch circuit without microcontroller. Clap operated switch circuit sound operated switch. When capacitor value is changed from 100mf to 10mf the led ontime is. It is relatively easy to make a hardware only clap onoff circuit, but i wanted to create a circuit that required two claps to switch on, and two claps to switch off. The clap sound sensed by condenser microphone is amplified by transistor t1. It produces a small electrical signal which is amplified by the succeeding transistor stage. The main component of the circuit is the electric condenser mic.
Analysing efficiency and effectiveness of clap switch mechanism. Clapcontrolled switch this circuit can switch two or more devices on and off in response to a series of rapid handclaps. The microphone changes sound wave in to electrical. This is a sound sensitive circuit, when sound is produced it is changed into electric energy through condenser mic and led turns on. Olokede, seyi stephen 49 circuit is expected to respond to two claps only when it is received within three seconds to energize a relay which will make connection with an external circuit.
Clap switch is an interesting hobby circuit which turns on the lights with a clap sound. While there are numerous means of generating the latching function, the latching relay greatly simplifies the circuit and provides a relay contact interface for driving a 115 or 230vac load such as a light bulb. In this tutorial, we will show you how to make clap switch using a 555 timer ic. The microphone changes sound wave in to electrical wave, which is further amplified by q1. The circuit changes its output state only when you clap twice within the set time period. The figure below shows a project schematic of a clap switch circuit. Share on tumblr this clap switch circuit using ic 555 is a hobby circuit, makes led to glow while you clap or make louder noise. Simple clap switch circuit diagram using relay clap on. Although its name is clap switch, but it can be turned on by any sound of about same pitch of clap sound. Ne555 timer ic which is configured in monostable mode 2.
The negative or gnd pin of the electret microphone is the pin that connects to the body of the microphone. How to make a clapclap on clapclap off switch circuit. Inside a flipflop circuit, at any given time just one transistor triggers while the other remains cutoff and once it receives a trigger pulse coming from external source subsequently 1st transistor gets switched off and 2nd transistor is activated, therefore output of. Before you make a circuit glowing 220v bulb, learn about relay, otherwise, it can be dangerous. It is known as clap switch because the condenser mic.
We have already seen the circuit diagram, working and applications of 9 way clap switch circuit. The electret microphone picks up the sound of your claps, coughs, and the sound of that book knocked off the table. Dec 20, 2015 this clap switch circuit using ic 555 is a hobby circuit, makes led to glow while you clap or make louder noise. Apr 06, 2016 clap switch breadboard layout and circuit diagram. Browse through a total of 32 ic 741 projects circuits.
The clapoperated circuit is a circuit which operates by clapping from a remote point. Clap switch circuit diagram using ic 555 circuit digest. In this project we are going to make clapper circuit using the concept of adc analog to digital conversion in arduino uno. While there are numerous means of generating the latching function, the latching relay greatly simplifies the circuit and provides a relay contact interface for driving a. S were proposed clap activated switch device that will serve well in different phonocontrolled applications, providing inexpensive key and at the same time flee from false triggering 1. Mar 11, 2017 in this clap switch, circuit clap is acting as a pulse for the flipflop circuit. Led turns on sound signal and turns off automatically after few seconds, the led ontime can be varied by changing the value of 100mf capacitor. Clap switch a mini project report submitted in the partial fulfillment of degree of bachelor of technology.
Pdf this paper presents the design of a clap activated switch device that will serve. All you need is to just clap or you can puff in front of the microphone and after that, the device attached to the microphone becomes on or off. The fundamental concept of the clap switch is microphone received the sound of the clap or any other sound, the circuit will be activated this kind of system has been helpful of the day to day. Working principle of clap switch circuit is based on the above discussion. Clap switch is a basic electronics miniproject, made with the help of the basic components. If you want to design a switch circuit to turn on and turn off without reach a physical switch then try this simple clap switch circuit with relay, this circuit is designed with timer ic 555, dual d flip flop ic 7474 and a electromagnetic relay. Clap switch circuit for devices circuit working and. Clap switch has the ability to turn onoff any electrical component or circuit by the clap sound.
Here is the circuit of simple, interesting and inexpensive electronics clapper which produces clap sound, and can be used to control the devices which used clap sound to operate. It works as a switch which makes devices on and off by making a clap sound. The clap switch circuit shown can on and off electronic appliances with. The time for which the output stays high can be controlled by a suitable rc values. If you wish to on and off the device without a penny shifting from your space then this circuit is helpful for you. We are going to use a mic and uno to sense the sound and trigger a response.
When you clap for the second time, the relay is deactivated and the light is turned off. The clap activated switching device can basically be described as a low frequency. This circuit can be used to control ac loads such as lights, fans, etc through clapping. The claps are picked up by an electret microphone and amplified by a 741 op amp ic1.
Ic 555 timer is a one of the far and wide used ic in the field of electronics and is employed in different varieties of electronic circuits for its properties like. The circuit is divided in two stages the first stage is built with two 2n4401 transistors and second is built with 555 timer ic. This construction will give mono pulse when trigger received from mic, the duration of pulse time varies respect to r2 and c2 connected with ic555. Shadow sensors are widely used to detect the movement of a person. Clap switch circuit on breadboard sound triggered led. Clap on clap off switch circuit diagram using 555 timer ic. Regarding your second question, i have already given the schematic on the same page, see below the clap switch page, there is another schematic with the name, clap switch glowing 220v bulb. This is a project of a sensitive clap switch circuit.
Initially the transistor is in off state because there is. Clap switch circuit rookie electronics electronics. Clap switch using transistor electronic projects, power. In a flipflop circuit, at a time only one transistor conduct and other cutoff and when it gets a trigger pulse from outside source then first transistor is cutoff and 2nd transistor conducts, thus output of transistor is either logic0 or logic1 and it remains in one state 0 or 1.
Jan 05, 2019 if you want to design a switch circuit to turn on and turn off without reach a physical switch then try this simple clap switch circuit with relay, this circuit is designed with timer ic 555, dual d flip flop ic 7474 and a electromagnetic relay. This circuit can switch on and off light a fan or a radio etc. Clap switch circuit for devices summary of clap switch circuit. Simple clap switch circuit diagram 220v using relay. This clap on clap off switch basically turns on or off the device, by using the clap sound, as switch. A tutorial on how to make a clap switch circuit aka sound triggered led, along with detailed explanation on how the circuit works. Heat sensitive switch clap switch automatic switch for voltage converters auto power off on and off button clapcontrolled switch push off push on masterslave switch lowvoltage remote mains switch speakerheadphone switch for computers petrol gas switch for a pajero rc remote control switch mains slave switcher ii computer off switch mains. The sound of clap is received by a small microphone that is shown biased by resistor r1 in the circuit.
Design and construction of clap activated switch international. Dec 31, 2012 resultwe constructed the circuit as per circuit diagram. You can use this circuit concept in many ways to activate sound based project. This clap operated switch system works on detecting of sound of claps. This is a simple clap switch circuit diagram project. It can be used as divide by 9 counter by connecting q0 with clock input pin1 cp1 and providing clock pulse to cp0 that is on pin14. The only unusual component is the single coil latching relay. This circuit can onoff a 220v electronic device like fan, lamp by the sound of clap.
Build the circuit as shown in the breadboard layout and circuit diagram below. Simple clap switch circuit using transistors tested. A clap switch circuit is a sound sensitive circuit. On clapping there will be a peak signal at the mic which is much higher than normal, this signal is fed to the amplifier, though a high pass filter. Condenser mic basically converts sound energy into electrical energy. The complete circuit diagram of this simple clap switch project is shown below. Clap switch project report pdf ppt download abstract. You can operate 4 appliances using this single soundclap operated circuit. The basic idea of clap switch is that the electric microphone picks up the sound of your claps, coughs, and the sound of that book knocked off the table. The main component of this clap switch circuit is the electric condenser mic, which has been used as a sound sensor. Pdf design of a clap activated switch researchgate. It contains four master slave flop and also contain divide by two and divide by five counter. This is a simple clap switch circuit with high sensitivity.
One small request, could you please link me to the page of a particular clap switch circuit where, 1. You can connect any dc or ac appliance with the output of the relay to make it. Ic1 is configured as an inverting amplifier, with its gain. Although its name is clap switch, but it can be turned on by any sound of approximately same pitch of clap sound. The claps must be in quick succession, as seen in the video below, or else it does not work, which is the entire point of the circuit i will go into detail about the circuitry. One more plus point of this circuit is that there is no fear of the electrical shocks as you are not required to touch any of the mechanical switches physically. To turn onoff any appliance, you just have to clap twice. Resultwe constructed the circuit as per circuit diagram. This circuit has been designed to respond only to two hand claps which occur in relatively quick succession and to ignore one hand clap or even continuous clapping, as well as most other sounds which normally have lower frequency content than a hand clap. This is the circuit of a very sensitive clap switch. The circuit will switch on the relay and an led when a loud sound is detected by the microphone for example clap, whistle or any other loud sound. Ne 555 timer ic is an essential electronic component of the clap switch. The circuit presented here clap switch consists of silicon transistor and is divided in three main section i.
You can connect any dc or ac appliance with the output of the relay to make it switch on by sound. This circuit uses 2 ic one is 555 timer and second is 74ls93. To make the same circuit as mentioned above without ic 555 timer, we will have to use the following basic electronic components and devices. Pdf clap switch a mini project report submitted in the. A clap on clap off switch is an interesting concept that could be used in home automation. In this clap switch, circuit clap is acting as a pulse for the flipflop circuit. I hope you understood, i want a one way clap switch circuit which only will trigger the load on. Now, we are going to deal another circuit named clap switch circuit for devices. Dec 18, 2010 regarding your second question, i have already given the schematic on the same page, see below the clap switch page, there is another schematic with the name, clap switch glowing 220v bulb.
You can switch on and switch off the appliance at your room by simple clapping or by a sound. Clapcontrolled switch circuit diagram learning electronics. Two transistors cross connected as a bistable multivibrator change state at each signal. A resistor with value between 220 ohm and 470 ohm is used in series with the led r3 in the circuit diagram. Dec 27, 2017 a tutorial on how to make a clap switch circuit aka sound triggered led, along with detailed explanation on how the circuit works. Aug 30, 2018 we have already seen the circuit diagram, working and applications of 9 way clap switch circuit. While traveling recently, my family had trouble powering the 5 smartphones, 2 tablets, and 2 laptops while driving. We have previously built clap switch and clap on clap off switch, using 555 timer ic. The output will goes to high 1 for a certain time and it will come back to the low state. Complete list of electronics projects circuit diagram. Apr 28, 2017 this clap on clap off switch basically turns on or off the device, by using the clap sound, as switch. A clap switch circuit is always come in the category of very interesting electronic circuits, it is also a good learning project for electronic beginners.
We will use two basic clap switch circuit diagrams i. By default the output of this circuit will be low 0. Along with some of the other components, this circuit is mainly based on the two ics i. Condenser mic basically converts sound energy into electrical energy, that in turns used to trigger 555 timer ic, through a transistor. You can see the circuits and connections in the above schematic diagram of clap switch. Working and schematic diagram of clap swith circuit. Sensitive clap switch circuit d mohankumar 04242010. Whenever you clap near the microphone, clap sound will trigger 555 timer and your output will be turned on either you are using led or relay. Since, the positive input is connected to the internal reference voltage source, gp1 pin can be used as a. Mar 21, 2018 simple clap switch circuit diagram 220v using relay. Clap operated switch a small condenser microphone is connected at the base of transistor t1, which is biased from resistor r1 10 kiloohms.
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