Extension activities. Try changing the higher/lower limit of the random number in the timer program; Turn the micro:bit into a more predicable timer with different buttons for different time limits ...

Let's start with coding the micro:bit by opening the Mu application to begin. As always, ... from random import randint. Next, we create three variables, port , baud and mc .

The micro:bit can then interact with its in-built sensors and buttons to make its 25 LEDs flash in different patterns, letting it display - for example - letters and numbers.