This product includes two AAA batteries you need in your experiment. The expansion board integrates 24 programmable RGB lights and microphones, and you can control the on-board RGB lights by the microphone. We also designed the corresponding acrylic plate and screw to hold the micro:bit and battery. The Arduino interface allows the aura expansion board to support the Arduino controller. In addition, the expansion board is designed with LEGO building blocks, which can also be used by building block fans.


1.24 high brightness programmable RGB lights, on-board microphone.

2. Beautiful and high-quality acrylic fixing plate.

3. Partial micro:bit and Arduino program are available.

4. Compatible with LEGO block.


Size: 88.1mm(Diameter)

Weight: 17.9g

Part List

1 x Halo expansion board

1 x Micro:bit fixed plate (acrylic)

4 x Battery and fixing plate (acrylic)

1 x Battery box

2 x AAA battery

1 x Micro USB cable

n x Fixing screw and nut *n

Questions and Answers


Micro:bit RGB LED halo expansion board (with battery)

SKU 6000300320