AI03 MIC&VR&LED

Features

The MEMS microphone and volume are connected to the MCU leaf via analog input pins and the LED is connected to the digital output pins. To achieve low power consumption, the power can be turned off using a load switch controlled by the I2C Expander.

Specification

Dimension

Item Description
Dimension   W23×D20.5×H4.7mm

Microphone

Item Description
Part number SPW2430HR5H-B
Type MEMS
Direction Omnidirectional
Frequency range 100Hz ~ 10kHz
Gain 0dB
Interfaces Analog

Volume

Item Description
Part number ST-4ETA10kΩ
Nominal resistance 10kΩ
Resistance law Linear law (B)
Effective electrical angle 210° (1 turn)

LED

Item Description
Part number SML-A12Y8TT86
Package type Side-view
Emitting color Yellow

I2C I/O Expander

Item Description
Part number PCA9557RGVR
Interface I2C (Address: 0x1B)

Block diagram

Pinassign

Tips

About Microphone, Volume and LED

Item
Microphone MK500
Volume VR500
LED

Sample App

AVR MCU Examples

ESP32 MCU Examples

Document

Revision history 

  • Rev A1.0: First edition, August 2019

Last modified 07.01.2021