Category Archives: computers

Mastermind game for micro:bit

Posted on July 29, 2020 by blogmywiki

Following my calculator and communicator projects, I decided to recreate the classing 70s game Mastermind on the micro:bit. Mastermind was based on an older game, possibly called Bulls and Cows or Moo! There have been various computer versions of it … Continue reading →

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micro:bit wireless keypad communicator

Posted on July 25, 2020 by blogmywiki

Learn how computers scan keyboards and make your own wireless texting machine! Building on my micro:bit calculator project, which uses a 4×4 membrane keypad attached to a breakout board, I made a simple device so you can send and receive … Continue reading →

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micro:bit calculator with external keypad

Posted on July 21, 2020 by blogmywiki

I learned a lot about how matrix keyboards work in a recent micro:bit project where I made my own out of some buttons and wire. It’s much simpler, though, to use a ready made one and these 4×4 membrane keyboards … Continue reading →

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Learn how a keypad matrix works with a micro:bit

Posted on July 11, 2020 by blogmywiki

Use a micro:bit, some buttons, and wires to learn how a keyboard matrix works Back in 2018 I had a go at making a simple pocket calculator using some micro:bits, and one thing that’s been bugging me ever since was … Continue reading →

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An improved micro:bit CPU

Posted on June 28, 2020 by blogmywiki

In a previous project I made a simulation of a very simple microprocessor using a BBC micro:bit. It’s coded in MakeCode blocks and, although it only has 4 instructions in its very reduced instruction set, it behaves in many ways … Continue reading →

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