Module Audio
SKU:M144
Description
Module Audio is an audio-interaction expansion module for M5Stack, built on the ES8388 audio codec solution. It offers dual 3.5 mm jacks (one TRS jack for microphone input only, one TRRS jack for both microphone input and headphone output) to fulfill various recording and stereo playback needs. An onboard STM32G030F6P6 microcontroller handles TRRS jack insertion detection and drives WS2812C RGB LEDs. Register configuration enables automatic switching between CTIA (American) and OMTP (International) wiring standards, ensuring compatibility with most headsets featuring integrated microphones. This module is ideal for smart voice, interactive art, educational entertainment, portable recording, and other audio applications.
Features
- STM32G030F6P6 MCU control
- High-fidelity audio codec
- Dual-channel microphone input
- TRS + TRRS dual 3.5 mm jacks
- CTIA/OMTP wiring standard switching
- WS2812C RGB status LEDs
- Supported development platforms
- UiFlow1
- UiFlow2
- Arduino IDE
Includes
- 1 × Module Audio
Applications
- Smart speakers
- Voice recognition
- Educational entertainment
- Interactive art installations
Specifications
| Specification | Parameter |
|---|---|
| MCU | STM32G030F6P6 @ I2C Address: 0x33 |
| Audio Codec | ES8388 @ I2C Address: 0x10 |
| Audio I/O | 2-channel mic input, 1-channel stereo headphone output |
| Jack Types | 1 × TRS (mic-only), 1 × TRRS (mic + headphone) |
| Status LEDs | 3 × WS2812C_2020 |
| Headset Standard | CTIA / OMTP |
| Operating Current | DC 3.3 V @ 23.53 mA |
| Standby Current | DC 3.3 V @ 8.58 mA |
| Operating Temperature | 0 ~ 40 °C |
| Product Size | 54.0 × 54.0 × 13.1 mm |
| Product Weight | 12.8 g |
| Package Size | 132.0 × 95.0 × 16.0 mm |
| Gross Weight | 26.3 g |
Learn
Headphone Jack Types & Wiring Standards
In audio interfaces, common plug formats include TRS and TRRS:
- TRS (Tip-Ring-Sleeve) three-contact plugs support only mono microphone input or stereo output; on this module it is mic-only;
- TRRS (Tip-Ring-Ring-Sleeve) four-contact plugs provide left/right stereo output plus a microphone channel for combined mic input and playback.
For TRRS plugs there are two wiring standards:
- CTIA (American): L (Tip) = Left, R (Ring1) = Right, MIC (Ring2) = Microphone, GND (Sleeve) = Ground;
- OMTP (International): L (Tip) = Left, R (Ring1) = Right, GND (Ring2) = Ground, MIC (Sleeve) = Microphone.
- TRS (Tip-Ring-Sleeve) three-contact plugs support only mono microphone input or stereo output; on this module it is mic-only;
- TRRS (Tip-Ring-Ring-Sleeve) four-contact plugs provide left/right stereo output plus a microphone channel for combined mic input and playback.
For TRRS plugs there are two wiring standards:
- CTIA (American): L (Tip) = Left, R (Ring1) = Right, MIC (Ring2) = Microphone, GND (Sleeve) = Ground;
- OMTP (International): L (Tip) = Left, R (Ring1) = Right, GND (Ring2) = Ground, MIC (Sleeve) = Microphone.
Schematics
1/1
PinMap
RGB & FSUSB42MUX & I2C
| STM32G030F6P6 | PA7 | PA2 | PA1 | PA12 | PA11 |
|---|---|---|---|---|---|
| WS2812C | LED_DAT | ||||
| FSUSB42MUX | HP_MODE_SET | HP_DET | |||
| I2C | SDA | SCL |
Pin Details
Module Audio reserves A/B Pin Configuration for I2S pin switching to match host defaults:
- Configuration A matches Basic/Core2 default I2S pins
- Configuration B matches CoreS3 default I2S pins, since CoreS3’s onboard ES7210 occupies the original I2S pins and requires switching to avoid conflict
- Configuration A matches Basic/Core2 default I2S pins
- Configuration B matches CoreS3 default I2S pins, since CoreS3’s onboard ES7210 occupies the original I2S pins and requires switching to avoid conflict
M5-Bus
| PIN | LEFT | RIGHT | PIN |
|---|---|---|---|
| GND | 1 | 2 | |
| GND | 3 | 4 | |
| GND | 5 | 6 | RST |
| 7 | 8 | ||
| 9 | 10 | ||
| 11 | 12 | 3V3 | |
| 13 | 14 | ||
| 15 | 16 | ||
| SDA | 17 | 18 | SCL |
| 19 | 20 | ||
| I2S_LRCK | 21 | 22 | I2S_MCLK/I2S_SCLK |
| I2S_DIN | 23 | 24 | I2S_MCLK/I2S_SCLK |
| 25 | 26 | I2S_DOUT | |
| 27 | 28 | 5V | |
| 29 | 30 |
Model Size
Datasheets
Softwares
Arduino
UiFlow1
- Coming Soon...
UiFlow2
Protocol
Internal Firmware
I2C Address
| Chip | I2C Address |
|---|---|
| STM32G030F6P6 | 0x33 |
| ES8388 | 0x10 |
Video
- Module Audio product introduction and demonstration