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Micro:bit – Morelands Code Club https://codeclub.aptanet.org Morelands Primary School Thu, 31 Jan 2019 14:41:58 +0000 en-GB hourly 1 https://wordpress.org/?v=6.9.11 59665447 Random Number Sender https://codeclub.aptanet.org/2019/01/random-number-sender/ https://codeclub.aptanet.org/2019/01/random-number-sender/#respond Thu, 31 Jan 2019 14:41:52 +0000 http://codeclub.aptanet.org/?p=200 Random Number Sender for the BBC Micro:bit
  • First, head to https://makecode.microbit.org/#editor
  • You will now have the code editor ready to use, so let’s get started. When we start we want to set a ‘radio group’ and show a tick so we know the Micro:bit is ready to go. In the ‘on start’ block add the blocks shown below:
Set Radio

Now we need a large block which does several things, and keeps doing them forever. You will put these blocks into the ‘forever’ block. This is what they do:

  • if button A is pressed (button A is the left one)
    • pick a random number between 0 and 9 and keep it safe in a variable
    • send the random number over the radio
    • show the number on the display (so we know what it was
    • pause for 2 seconds
    • set the display back to the tick so we are ready for the next one
Send Number

So each Micro:bit can receive the numbers as well as send we need a block for that. It uses an ‘on radio received’ block to show the number for 2 seconds and then wait for another.

Receive Number

Here are some things to try:

What happens if you change the number in the ‘radio set group’ block?

Can you send a message instead of a number?

]]> https://codeclub.aptanet.org/2019/01/random-number-sender/feed/ 0 200 Rock, Paper, Scissors for the Micro:bit https://codeclub.aptanet.org/2018/02/rock-paper-scissors-microbit/ https://codeclub.aptanet.org/2018/02/rock-paper-scissors-microbit/#respond Tue, 06 Feb 2018 14:42:10 +0000 http://codeclub.aptanet.org/?p=119 Rock, Paper, Scissors for the BBC Micro:bit
  • First, head to http://jumpto.cc/pxt-new
  • You will now have the code editor ready to use, so let’s set an image for the start of the game. Drag a show leds box across into the start block.

Start image
Start image
  • We are going to shake the Micro:bit to tell it to choose between Rock, Paper and Scissors, so find and on shake block. Inside that we need to set a variable to a random number between 0 and 2 (remember variables from our Scratch projects).

    • Random number on shake
    Random number on shake
  • Depending on which number was chosen we want to show a different image. A 0 is going to be a Rock, so we need an if-then-else block. Look in the logic section to find a way to compare the variable (item) with 0, and then draw a picture of a Rock in a show leds block.

    • Is it a Rock?
    Is it a Rock?
  • We are still left with two more options, Paper or Scissors, so we need to have another if-then-else block in the else part of the block we’ve just added. This time we will check to see if item is 1 and draw a picture of a piece of Paper.

    • Is it Paper?
    Is it Paper?
  • There are only 3 options, so for our simple project we can assume that if it isn’t Rock or Paper then it must be Scissors (with bigger projects be careful about making assumptions!), so put a show leds block in with an image of some scissors.

    • It must be Scissors
    It must be Scissors
  • To finish off we need to wait for a while to see which item has been chosen and then reset the image to the one we used at the start – why do you think that is a good idea?

    • Wait and reset
    Wait and reset
  • Once you’ve tested your project try clicking on the Javascript {} button at the top. This is the same project, but showing the Javascript code behind the blocks.
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