Two Transient Clap Switch Circuits

Introduction: Two Transient Clap Switch Circuits

Transient Clap Switch Circuit is the circuit which turns ON with a clap sound. The output remains ON for some time and then turns OFF automatically.

The time of activity can be controlled by varying the value of capacitance of Capacitor. More the capacitance, more is the time for which the output remains ON.

A condenser microphone is used as a sensor. The trigger can be clap/snap or any other sound capable of activating the circuit.

Here, I will show you two different ways to make transient clap automated circuit :

  • Using 555 Timer IC
  • Using Transistors

Step 1: Circuit Diagram

These are the circuit diagrams for making circuit using :

  • 555 Timer IC
  • Transistors

Step 2: Components

These are the Components Required for making circuit :

1. Using 555 Timer IC

• 555 Timer IC

• Condenser Microphone

• Transistor: BC547

• Resistors: 100K, 47K, 1K, 330Ω

• Capacitor: 10 μF

• LED

2. Using Transistors

• Transistors: BC547 (2)

• Condenser Microphone

• Resistors: 1M, 10K (2), 330 Ω

• Capacitor: 47 μF

• LED

Other Requirements:

• Battery: 9V and battery clip

• Breadboard

• Breadboard Connectors

Step 3: Step-by-step Tutorial

1 Person Made This Project!

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7 Comments

0
helep
helep

5 months ago on Step 3

is there any pcb layout for this?

0
waraderahul530
waraderahul530

Question 3 years ago

How to increase the led time

0
JamesA191
JamesA191

Answer 9 months ago

Increase the capacitor size.

0
JamesA191
JamesA191

Question 9 months ago on Introduction

How can we make the microphone more sensitive? I have made the circuit, and it works just fine, except that I have to clap hard. If you have any ideas,I will try them. Once again, many thanks.
James

0
IvanBog
IvanBog

Question 1 year ago on Introduction

I should like to make a counter to place it on plastic "tennis"-racket (toy), to count the bouncings of a little rubber ball. I should like to make it just like your clap-counter, but not with calculator but with modified pedometer.
Could you help me with another circuit diagram, applied to this pedometer?

pedometer.jpg
0
pknithi12
pknithi12

3 years ago

Sir ,pls send working notes

Hello sir, if the lead has to be kept for 1 hour, then the capacitance of capacitor will have to be kept at