pxt-calliope/docs/lessons/banana-keyboard/activity.md

banana keyboard activity

build a banana keyboard

micro:bit banana keyboard

In this project, you will build your own music player micro:bit banana keyboard from household fruit. Project duration: 15 minutes.

Materials

• micro:bit, battery holder and 2 AAA batteries
• Bananas
• Orange
• Crocodile clips

Steps

Step 1

Using the 1st crocodile clip, connect the end of the crocodile clip onto GND pin on the micro:bit.

Step 2

Using the 2nd crocodile clip, connect the end of the crocodile clip onto the 0 pin on the micro:bit.

Step 3

Using the 1st crocodile clip, connect the second end of the crocodile clip onto based of the headphone jack.

Step 4

Using the 2nd crocodile clip, connect the second end of the crocodile clip onto tip of the headphone jack.

Step 5

Using the 3rd crocodile clip, connect the end of the crocodile clip onto the 1st crocodile clip already clipped onto GND.

Step 6

Using the 3rd crocodile clip, connect the unattached end of the crocodile clip onto the orange.

Step 7

Using the 4th crocodile clip, connect the end of the crocodile clip onto pin 1 on the micro:bit.

Step 8

Using the 4th crocodile clip, connect the unattached end of the crocodile clip onto the banana.

Step 9

Your banana keyboard is ready!

Step 10

Connect your micro:bit to your computer using your USB cable and run this script:

let sound = music.noteFrequency(Note.C);
input.onPinPressed(TouchPin.P1, () => {
    for (let i = 0; i < 5; i++) {
        sound = sound + 25;
        music.playTone(sound, music.beat(BeatFraction.Sixteenth));
    }
});

Tap your banana instrument to play sound against... the fruit!

~avatar boothing

Excellent, you're ready to continue with the challenges!

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