Control the lighting of two LEDs using the Micro:bit buttons

Purpose of this tutorial:

In this tutorial we will control the lighting of two LEDs (red and green) via the two buttons A and B of the micro: bit card:

1- When you press button A, the green LED turns on and the red LED turns off.

2- When you press button B, the red LED turns on and the green LED turns off.

Components required

• micro: bit card
• 1 red LED
• 1 resistance of 220Ω Micro: bit
• GPIO Expansion Board (for setups 2 and 3)
• connecting wires 

Mounting

To perform the assembly, you can connect the green LED to pin P0 and the red LED to pin P1 of the micro: bit card.

There are many mounting methods and here are some examples:

Mounting (1)

Mounting (2)

Mounting (3)

Makecode Program

Here is the makecode program which allows you to light 2 LEDs:

• Green LED connected to the P0 pin of the micro: bit.
• Red LED connected to pin P1 of the micro: bit.