AI02 SP&PIR

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Read this official Leafony page and explain its key points in English. For hardware help, first ask for a photo or the installed leaf models, assembly and power sources, then the goal and tools. Clarify which LED or display changed and whether a cable or leaf was replaced. Do not equate an unseen reset button with an absent one, or I2C acknowledgement with a working display. Verify specifications against sources; distinguish observations from hypotheses. Follow a redirect to its destination; if unreadable, ask for the relevant text instead of guessing.

Page: AI02 SP&PIR

URL: https://docs.leafony.com/en/leaf/io/ai02/

Description / headings (excerpt): Features / Specification / Dimension / Piezoelectric Speaker

Table of contents

Features

Combined with an MCU (microcontroller) leaf, this leaf lets you detect an approaching person and play sounds or melodies. A sample demonstrates playing a melody when someone approaches.

It has a piezoelectric speaker connected to the MCU leaf through PWM and an IR sensor connected over I2C. The sensor has a built-in proximity detection algorithm and can be configured to output an interrupt signal when it detects an approach.

Specification

Dimension

Item	Description
Dimension	W23×D20.5×H5.3mm

Piezoelectric Speaker

Item	Description
Part number	CMT-1203-SMT
dimensions	12 x 12 x 3mm
rated frequency	4kHz(typ)
sound pressure level	81dB(min) at 10 cm, 5 Vp-p, 4,000 Hz square wave
Current consumption	5mA(max) at 5 Vp-p, 4,000 Hz square wave

IR Sensor

Item	Description
Part number	AK9754
Sensor	Quantum-type IR Sensor
Interfaces	I2C(Address: 0x65 or 0x64)

AI02 SP&PIR

Features

Specification

Dimension

Piezoelectric Speaker

IR Sensor

Block diagram

Pinassign

Sample App

AVR MCU Examples

ESP32 MCU Examples

Document

Revision history