Speaker

Overview

Use the piezoelectric loudspeaker in the SP&PIR Leaf to make the melody sound.

Leaf to use

Use the following leaves.

Type	Name	Q’ty
AI02	SP&PIR	1
AP01	AVR MCU	1
AV01	CR2032	1
AZ01	USB	1
AZ62	Connector Cover	1
	CR2032 coin cell battery	1
	M2*15mm screw	2

Assembly

Let’s assemble leaves as shown in the figure below.

Source code

Open the Arduino, go to File → Sketch Examples → 02.Digital → toneMelody.

In this sample code, the speaker is supposed to be connected to pin number 8.
But as the loudspeaker is connected to pin 5 in Leafony, you should fix the following part to make it correct.

• Change the 8 to 5 in line 37.

tone(5, melody[thisNote], noteDuration);

• Change 8 to 5 in line 44.

noTone(5);

Execution Results

The melody sounds only once from the speakers.