Bring me home

Larry thought he had used the best way of getting around in the forest – he had read it an old book written by two brothers. Using the remains of his breakfast sandwich, he left a trail of bread crumbs behind to mark his path. Naturally by mid-afternoon, he was hopelessly lost as the breadcrumbs he left behind mysteriously disappeared.

While he had enjoyed birdwatching that day (an unusually large number of birds gathered near him as he walked), there was no trail to be found! Those two “experts” were fakes. That’s the last time he’d trust anybody with a name like “Grim”.

“Right, or… Left?” Larry queried aloud. He needed to reach camp before dark. He had a map… but which way should he go?

What Will Happen

Press A to select the direction that you want to head and B to confirm. Following that, turn the compass to figure out where exactly you should go. As you turn towards the selected direction, the buzzer will beep repeatedly. The closer you are to the direction, the faster the speed of beeping. Once you have successfully figured out the direction, an arrow pointing towards the direction will appear.

Learning Points

  • Use in-built micro:bit temperature sensor as input
  • Send digital signal to fan module as output
  • Program the LED grid to display temperature value

Block Editor Code

Download the block editor code for this challenge. The hex file is contained in a zip folder.

Refer here for instructions on importing code into Micro:bit. 

This code can be imported into the micro:bit block editor.

Dr Bit Code

Click the button below to download the Dr Bit solutions for this challenge. The Dr Bit file is contained within a zip folder.

Download the Dr Bit PC software.

Download the Dr Bit app.

Additional Challenge

  • Add a servo motor that will mechanically point a physical arrow to the desired direction.

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Downside School
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Radstock
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