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arduino-tick-tock-metronome-a49188-en.md

Perfect Timing: Arduino Metronome

For musicians, holding a steady beat is crucial. The Tick-Tock Metronome project uses the precise internal clock of the Arduino to create a steady, adjustable click-track accompanied by a sweeping row of LEDs.

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Calculating BPM

The core math of this project revolves around Beats Per Minute (BPM).

  • If you want a tempo of 120 BPM, that equals 2 beats per second.
  • The Arduino must trigger a click exactly every 500 milliseconds.
  • A potentiometer allows the user to adjust the BPM (e.g., mapped from 60 to 200 BPM). The Arduino instantly recalculates the delay between clicks.

Hardware Components

  • Arduino Uno/Nano: The timing core.
  • Potentiometer: To adjust the tempo dial.
  • Piezo Buzzer or Mini Speaker: To produce the sharp "tick" and "tock" sounds.
  • LEDs (x5 or x7): Arranged in a row, they light up back and forth like a mechanical pendulum sweeping across the metronome face.

The "Sweep" Effect

By using an array of LED pins, you can write a for loop that sequences the LEDs left-to-right on the "Tick", and right-to-left on the "Tock," giving a highly satisfying visual representation of the rhythm.

ข้อมูล Frontmatter ดั้งเดิม 

title: "Arduino Tick-Tock Metronome"
description: "Keep the beat! Build an electronic metronome with a visual LED pendulum and a clicking speaker to help musicians stay in tempo."
category: "Audio & Sound"
difficulty: "Easy"