Zombie Escape Sign

When running away from zombies, it’s easy to lose your friends. Create this direction sign to make sure that your friends know which way to go. We want to be able to set which arrow to display using the buttons on the micro:bit and the Circuit Playground Express. For the Raspberry Pi, we’re going to use the letters L and R on the keyboard for left and right.


Figure 2.1   micro:bit direction sign in place.





When you’ve finished coding, unplug the USB cable, and plug in a battery pack. Place ...

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