DIY Club

  Project 6: DIY Hand Clap Switch Objective: To create a hand clap switch circuit that turns an LED ON/OFF using sound (claps). Components Required: Electret Microphone NPN Transistor (BC547) Resistors – 1KΩ, 10KΩ, 100KΩ Capacitor – 10µF 555 Timer IC Relay Module (5V) LED (or any small appliance like a fan) 9V Battery Breadboard & Connecting Wires Circuit Diagram: (A schematic can be designed in Fritzing or Tinkercad.) Step-by-Step Instructions: Step 1: Connect the Microphone Connect the electret microphone with a 10KΩ resistor in parallel. One leg connects to GND , the other connects to the base of BC547 via a 1KΩ resistor . Step 2: Amplify the Sound Signal The collector of BC547 connects to +9V via a 10KΩ resistor . The emitter goes to GND . The amplified signal is passed to a 555 Timer IC to create a pulse. Step 3: Control the Relay The output of the 555 Timer triggers a 5V relay module . The relay controls the LED or any other AC/DC device . Step 4: Power the Circ...