CH5-B - Two Buttons Functions

We'll use Maker Tape to connect the two Buttons and the LED to the Bit Board on a LEGO baseplate.

We'll connect our LED to Pin 1 and one of our Buttons to Pin 4 and the other to Pin 5.

And of course we'll connect the Ground (GND) sides of each component to Ground on the Bit Board.

You'll notice the Ground on the Bit Board (as well as the LED and other Crazy Circuits components we'll use) is color coded White.

While the LED has Polarity our Button does not. If you connect it the other way around it will still work fine. Not all components have Polarity.

If you've never used a micro:bit before you'll want to check out this guide: Bit Board V2 Setup and Use

We're going to load the following code for our Two Buttons Functions program: https://makecode.microbit.org/_gJgf7Fi7w...

This code will blink the LED 6 times if you press the left button and 3 times if you press the right button.

This time we are using functions to control how many times the LED will blink. A function allows you to make your code modular, and as we'll see in future guides, can be quite powerful and help you organize your code.

For each button we've got a different function, one named blinkFast and one named blinkSlow, and it's easy to call the function when a button is pressed.

We've added a third function named dontBlink that will be called when neither button is being pressed.

Once the code is loaded it should start running immediately.

You can power the micro:bit via the USB cable you used to load the code or you can use a battery pack plugged into the Bit Board.

The LED should turn on and blink either 6 times or 3 times depending on which button you press.

Follow along with our recorded Live Stream!

You can watch the full video of us walking through this project, along with explaining and exploring the code: https://www.youtube.com/live/_QU-qXrxYr4...