LED Panel Challenges

The pannel consists of 25 red LEDs, which can be programmed independently.  It can display numbers, letters and images. 
The system is designed to scroll automatically if the characters to be displayed do not fit.

Challenge #1: Hello World

When you’re learning to programme, the first programme you create is called “Hello World”. This code displays the text “Hello World!” on a display device.

Objective.

When you connect the micro:BIT, the text “Hello World!!!” should be displayed on the board’s LED panel

Code description.

We suggest using the ‘On Start’ event, which is in the ‘Basic’ category. This block allows the code entered to be executed when the micro:BIT starts up.

Next, we will use the ‘Display String’ block, also found in the ‘Basic’ category, and enter the text “Hello World!!!”. This block displays the entered text character by character.

The code will look as follows.

The entered text string will immediately begin to be read on the LED panel. The text doesn't fit entirely, so it will scroll automatically.

Extra exercise

Modify the code, so that it shows the programmer's name. 

Challenge #2: Animations

Animation is a technique that creates the illusion of movement in static images. It is achieved through a sequence of ordered images which, when displayed consecutively, generate the visual illusion of motion.

Objective.

When the micro:BIT is connected, a beating heart will be displayed on the LED panel.

Code description.

The "forever" event, located in the Basic category, will be used.

Inside the previous block, place the instruction to show icon, using the heart icon.

Add the pause block (ms(100)) located in the Basic category.

Repeat the two previous blocks, but this time selecting the "small heart" icon.

Immediately, a heart that appears to be beating is displayed in the simulator.

Extra exercise

Modify the code, by using the block " show leds"so that it shows a scissor opening and closing.