pxt-calliope/docs/projects/banana-keyboard/make.md

# Make

## Materials

* @boardname@, battery holder and 2 AAA batteries
* Banana
* Orange
* 4 Crocodile clips

## Steps

### ``|Step 1|`` - Connect the ground lead

![](/static/mb/lessons/banana-keyboard-1.png)

Using the **1st** crocodile clip, connect the end of the crocodile clip onto **GND** pin of the @boardname@.

### ``|Step 2|`` - Connect the sound lead

![](/static/mb/lessons/banana-keyboard-2.png)

![](/static/mb/lessons/banana-keyboard-3.png)

Using the **2nd** crocodile clip, connect the end of the crocodile clip onto pin **0** of the @boardname@.

### ``|Step 3|`` - Connect the headphone to ground

![](/static/mb/lessons/banana-keyboard-4.png)

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

### ``|Step 4|`` - Connect the headphone sound contact

![](/static/mb/lessons/banana-keyboard-5.png)

![](/static/mb/lessons/banana-keyboard-6.png)

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

### ``|Step 5|`` - Connect a fruit lead

![](/static/mb/lessons/banana-keyboard-7.png)

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

### ``|Step 6|`` - Connect the orange to ground

![](/static/mb/lessons/banana-keyboard-8.png)

![](/static/mb/lessons/banana-keyboard-9.png)

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

### ``|Step 7|`` - Connect a second fruit lead

![](/static/mb/lessons/banana-keyboard-10.png)

Using the **4th** crocodile clip, connect the end of the crocodile clip onto pin **1** on the @boardname@.

### ``|Step 8|`` - Connect the banana

![](/static/mb/lessons/banana-keyboard-11.png)

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

### ``|Step 9|`` - Complete banana keyboard

![](/static/mb/lessons/banana-keyboard-12.png)

Your banana keyboard is ready!

### ``|Step 10|`` - Test the keyboard

Connect your @boardname@ to your computer using your USB cable and run this script:
```blocks
input.onPinPressed(TouchPin.P1, () => {
    music.playTone(music.noteFrequency(Note.C), music.beat(BeatFraction.Quarter));
});
```

#### ~hint

How is touching a piece fruit detected by the @boardname@? Find out in this video:

https://www.youtube.com/watch?v=GEpZrvbsO7o

#### ~

Grab a the orange with one hand. With the fingers of your other hand, tap the banana to play sound. Your banana keyboard is ready!

## ~button /projects/banana-keyboard/code
NEXT: beat box
## ~