Base M5GO Bottom2 v1.3
SKU:A014-C-V13
Description
Base M5GO Bottom2 v1.3 is an expansion base designed for the M5Stack Core2 series.
It features a BMI270 6-axis IMU, an LMD4020 digital microphone, and a built-in 500 mAh lithium battery. Two HY2.0-4P expansion ports expose commonly used ADC, DAC, and UART pins for convenient connection to various sensors.
The base integrates 10 programmable SK6812 RGB LEDs on both sides. Combined with frosted light guides, they provide soft and even illumination. The bottom uses a Pogo Pin magnetic charging interface. When connected to a magnetic charging base, the onboard TP4057 charging management IC safely regulates charging for the built-in battery. The Pogo Pin interface also exposes the host controller's I2C bus, enabling magnetic attachment of external expansions. Built-in magnets and LEGO-compatible mounting holes on the back allow seamless integration with LEGO structures. It is suitable for IoT development, motion-sensing interaction, and creative audio-visual projects.
Features
- Compatible with the Core2 series
- Digital microphone
- Programmable LED light bar
- 500mAh lithium battery
- HY2.0-4P expansion ports
- Compatible with LEGO brick structures
- Compatible with magnetic charging base
Includes
- 1 x Base M5GO Bottom2 v1.3
- 2 x M3 * 16mm socket-head machine screws
- 2 x M3 * 18mm socket-head machine screws
- 1 x 2.5mm L-shaped hex key (for M3 screws)
Applications
- Core2 v1.3 expansion
- IoT development
- Motion-sensing interaction
- Creative audio-visual projects
Specifications
| Specification | Parameter |
|---|
| Microphone | PDM microphone (LMD4020T261-OAC23) |
| LEDs | 10 x SK6812 programmable RGB LEDs |
| Lithium Battery | 500mAh @ 3.7V |
| IMU | BMI270 |
| Product Size | xxx mm |
| Product Weight | xxx g |
| Package Size | xxx mm |
| Gross Weight | xxxg |
Schematics
Base M5GO Bottom2 v1.3 Schematics PDF
Pin Mapping
SK6812-LED Bar
| ESP32 Chip | G25 |
|---|
| SK6812 | DATA |
LMD4020 - Microphone
| ESP32 Chip | G34 | G0 |
|---|
| LMD4020 | DAT | CLK |
BMI270 & Pogo Pin
| ESP32 Chip | G21 | G22 |
|---|
| BMI270 | SDA | SCL |
| Pogo Pin | SDA | SCL |
HY2.0-4P
| HY2.0-4P | Black | Red | Yellow | White |
|---|
| PORT.B | GND | 5V | G26 | G36 |
| PORT.C | GND | 5V | UART_TX | UART_RX |
M5-Bus
| PIN | LEFT | RIGHT | PIN |
|---|
| GND | 1 | 2 | NC |
| GND | 3 | 4 | PORT.B |
| GND | 5 | 6 | NC |
| NC | 7 | 8 | RGB LED |
| NC | 9 | 10 | PORT.B |
| NC | 11 | 12 | 3V3 |
| NC | 13 | 14 | NC |
| UART_RX | 15 | 16 | UART_TX |
| IMU_SDA | 17 | 18 | IMU_SCL |
| NC | 19 | 20 | NC |
| NC | 21 | 22 | NC |
| NC | 23 | 24 | I2S_LRCK |
| NC | 25 | 26 | I2S_DIN |
| NC | 27 | 28 | 5V |
| NC | 29 | 30 | BAT |
Model Size
Datasheets
Software
Arduino
Product Comparison
