Sound Sensor Special: Clap-to-Light · Voice Switch · Audio Visualizer

🔊 Sound Sensor Experiments

📡 How It Works

Mic + amplifier: sound waves vibrate the diaphragm, changing capacitance and producing a weak voltage → amplified to a measurable range.

🧪 Three Classic Experiments

1️⃣ Clap-to-Light

Detect sound → LED on for 3s then off. Tune the sensitivity pot for the threshold. Extension: light only on double clap (count logic).

2️⃣ Voice Smart Switch

Clap-clap double pattern avoids false triggers. Relay controls a lamp / fan. LED status + 30-min auto-off.

3️⃣ Audio Spectrum Light

Read sound intensity analog and map to LED count / color. Lights pulse to the music. Desktop decor or party vibe light.