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 09.03.2021