Introduction: In life, sometimes there will be no electricity. At this time, if there is a small electric light, it will be much more convenient. Today, I will tell you how to make a simple small electric light.

Materials required:

BBC micro:bit V2 x 1

Sensor:bit expansion board x 1

ring of lights x 1

Battery box x 1

Male to female Dupont line x 1

AAA Battery x 2

Connection step diagram

Step 1: Insert the microbit into the sensor:bit extension first, remember not to insert it in the wrong direction

Step 2: Insert the male to bus bar into the light ring

Step 3: Insert the light ring into P2 on the sensor:bit expansion board, and insert the battery box into the microbit interface

program：https://makecode.microbit.org/_2WXFFsfyuLwH

After downloading the program, this simple small electric light is completed. When the power goes out, you can take out this electric light for simple lighting, and you can switch the two colors of the light through the AB button of the microbitd.