Keyestudio SK6812 4x8 LED matrix shield comes with 32 SK6812 LED lights, fully compatible with micro:bit control board. Onboard comes with two 3.3V regulator chips, one powers for the micro bit control board, the other powers for 32 SK6812 LED lights.
When using it, just input DC 5-9V to the shield. You can upload the control code to the micro:bit control board, then insert the micro:bit into the shield, and supply DC5-9V power voltage on the shield, this way you can control 32 SK6812 LED lights to display multiple colors.