Classroom Keyboard

Traffic Light Distance Sensor Instructions

You will need

  • BBC Microbit
  • 2 Crocodile Clips
  • One Banana
  • One Orange

Step 1: Making the Keyboard

  • Take one crocodile clip and attach it to GND (Ground) on your Microbit.
  • Take the other crocodile clip and attach it to Pin 0 on the Microbit. ![](/images/MicroBits/.png “”)
  • With the crocodile clip that is currently attached to GND, take the other end and insert it into your orange.
  • With the crocodile clip that is currently attached to Pin 0, take the other end and insert that into your banana. ![](/images/MicroBits/.png “”)

Step 2: Writing the Code

  • You will be given a note on a keyboard and that’s what you will be sending to the speaker.
  • Make a new variable called ‘note’, and place a ‘set note to 0’ block inside the ‘on start’ block. "Keyboard 1"
  • Underneath Music, look for the ‘Middle C’ block and place that so note is set to ‘Middle C’. "Keyboard 2"
  • Click on ‘Middle C’ and a keyboard will appear, look for the note that you’ve been given on the speaker. "Keyboard 3"
  • Underneath add a ‘show string’ block, and make the microbit show your note variable. "Keyboard 4"
  • Finally, we need to make sure that all the microbits can talk to each other, so we will set the radio group. This value should be 5. "Keyboard 5"
  • The Microbit will send out note when we hold our orange and then touch on the banana. Look for the ‘on pin p0 pressed’ and drag that into code. "Keyboard 6"
  • Under ‘Radio’ look for the ‘radio send value name = 0’ block and drag that into your ‘on pin p0 pressed’
  • Change ‘name’ to say ‘note’ and drop your ‘note’ variable ontop of the zero. "Keyboard 7"
  • Congragulations! You have now created a key on the keyboard!