CH8-D - LED Matrix Loop Loop

For this guide we won't need Maker Tape or any components. We're just going to put the micro:bit into the Bit Board.

We're only going to connect a USB cable and use the built-in LED Matrix found on the front of the micro:bit

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 LED Matrix Loop Loop program: https://makecode.microbit.org/_2UDL7LVsz...

We've now got a loop inside a loop! What this does is allow us to iterate through every single LED by plotting them out.

While the yValue is 0 the xValue will loop from 0 to 4, which is the top row. Then yValue will increase by one for the second row, again looping from 0 to 4 to light up each LED.

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 micro:bit's built-in LED Matrix will turn on the first LED, then clear the screen, and turn on the second, and so on...

The LEDs are not numbered 0 through 24 though, so we need to plot each one on an X/Y axes. (Which is easy to do with our nested loops!)

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://youtube.com/live/3A9rYMbcC04