The M5Stack Base M5GO Bottom2 v1.3 expands the Core2 series with a 6-axis IMU, digital microphone, 500mAh battery and programmable RGB LEDs, alongside Grove and magnetic Pogo Pin connections for further expansion. The M5Stack Base M5GO Bottom2 v1.3 is an expansion base designed specifically for the M5Stack Core2 series. It features an onboard BMI270 6-axis IMU, LMD4020 digital microphone, and 500 mAh built-in lithium battery. Two HY2.0-4P expansion ports expose commonly used ADC, DAC, and UART peripheral pins for convenient connection to various sensor modules. 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 and steadily charges the built-in battery. The Pogo Pin interface also exposes the host controller's I2C bus, supporting magnetic external expansion. Built-in magnets and LEGO-compatible mounting holes on the back allow seamless integration with LEGO structures. Lithium Battery Shipping: Due to courier restrictions, this product can only be shipped within the United Kingdom. With this item in your cart, your shipping options will be limited and may cost more than our usual rates. Why? 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 * Magnetic attachment design on the back Specifications Microphone PDM microphone (LMD4020T261-OAC23) LEDs 10 x SK6812 programmable RGB LEDs Lithium battery 500mAh @ 3.7V Lithium battery charging IC TP4057 IMU BMI270 Product size 54.0 x 54.0 x 15.0mm Product weight 30.9g Product Comparison Product Comparison Base M5GO Bottom2 v1.3 Base M5GO Bottom Base M5GO Bottom2 Base M5GO Bottom3 Core Core2 Basic (Core) Core2 CoreS3 RGB 10*SK6812 10*SK6812 10*SK6812 10*WS2812 IMU BMI270 / MPU6886 / IR / IR / IR BATTERY 500mAh 500mAh 500mAh 500mAh MIC LMD4020 SPQ2410 LMD4737 / Resources * Documents Package Contents * 1x Base M5GO Bottom2 v1.3 * 2x M3 16mm socket-head machine screws * 2x M3 18mm socket-head machine screws * 1x 2.5mm L-shaped hex key (for M3 screws)