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Medium⏱ time2 hr$ cost18

Voice-Activated Lights

Clap or speak a command and a microphone-driven robot toggles its lights or motors.

Start building ↓
fig — working model Result first

The build

Step 01

Wire the mic

Connect a sound sensor to an analog input.

Step 02

Set a trigger

Read the sound level and detect a sharp peak (a clap).

Step 03

Count claps

Toggle lights on one clap, motor on two.

Step 04

Test

Clap and watch it respond.

Working Principle

The microphone turns sound into a voltage; the code watches for sudden spikes and counts them to decide which action to fire.

The science behind it

A closer look

It's simple sound-event detection — thresholding and timing claps — a gentle first step toward real voice control.

Take it further

Variables to test

  • 1 Tune the threshold for noisy rooms.
  • 2 Add a third action for three claps.
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