№ 10 · you build it

Make it click

One press of the button, one click out of the speaker.

1. 1Tap the battery, then the button, then the resistor, then the speaker.
2. 2Tap the speaker, then the battery.
3. 3Press the Sound on button, then tap the red dome.

What to look for: A click when you press and another when you let go. A speaker only makes a sound when the current changes.

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