Sound sensor schematics

Build a responsive hand clap relay circuit powered by a 3V battery and unlock the potential of sound to control your projects. This innovative design uses a cleverly timed circuit and a discrete components build to activate and deactivate a relay with a single, powerful clap.... [read more]

Build a dynamic noise detection system with this circuit and transform your environment! This project utilizes two op-amps to amplify room noise, triggering a flashing LED to alert you to excessive sound levels – up to 85 dB. Perfect for pinpointing uncomfortable noise levels in your bedroom, living room, or identifying potentially hazardous environments.... [read more]

Build a fascinating, miniature beeper that responds to a whistle, perfect for sparking creativity and demonstrating electronics principles. This project, utilizing a CMos IC and readily available components, creates a responsive device—a testament to ingenuity and a rewarding build for any electronics enthusiast.... [read more]

Build a responsive, beep-activated gadget inspired by a classic design, perfect for innovative projects and surprising creations. This miniature circuit, utilizing a hex inverter IC and readily available components, delivers a delightful response to your whistle—a foundation for endless experimentation and captivating device development.... [read more]

Transform your audio experience with this innovative VOX circuit utilizing an MC2830. Achieve precise voice activation by discerning between sound and noise, boosting sensitivity from 3.0dB to 8.0dB with a simple R6 adjustment.... [read more]

Build a smart key finder circuit with a powerful 400dB amplifier and a unique fizzle-activated trigger. This innovative design, featuring a 3-4 KHz piezoelectric buzzer and a precisely engineered circuit, will ensure you never lose your keys again. Unleash your creativity and bring this exciting project to life!... [read more]

Build a noise-sensitive LED system to protect your environment. This circuit detects room noise levels – 50, 70, or 85 dB – flashing an LED to alert you to potentially disruptive sound.... [read more]

Build a responsive sound-activated circuit using a relay and LED, achieving a peak-sensitive response with a 2.2k to 10kohm resistor for optimal gain and stability.... [read more]

Build a responsive relay system controlled by your voice! This project extends a CMOS toggle flip-flop with bandpass filters and a Radio Shack #270-090C condenser microphone, enabling you to switch relays simply by whistling. Discover how to tune the 1700 Hz filters and achieve a remarkable 65x gain for precise control, perfect for innovative audio-triggered circuits.... [read more]