# Taking and Displaying Pictures

KOI can take pictures and display them like a digital camera.

### Install an SD Card

![](https://kittenbothk-eng.readthedocs.io/en/latest/_images/02-11.png)

```
The pictures are stored onto an SD card, without an SD card, these operations would fail.
```

### Taking and Displaying Pictures

![](https://kittenbothk-eng.readthedocs.io/en/latest/_images/mcbanner.png)

#### **Loading Extensions**

Search "KOI" in the search bar.

<figure><img src="https://kittenbothk.readthedocs.io/en/latest/_images/koi_search.png" alt=""><figcaption></figcaption></figure>

Or copy and paste the following link to the search bar.

**<https://github.com/KittenBot/pxt-koi>**

Blocks for taking pictures and displaying:

<figure><img src="https://kittenbothk-eng.readthedocs.io/en/latest/_images/06.png" alt=""><figcaption></figcaption></figure>

### Sample Program:

{% embed url="<https://makecode.microbit.org/_LAuVdULAbJD2>" %}

### Program Flow

Download the program to Micro:bit.

1. Press button A on the Micro:bit to take a picture.
2. Press button B on the Micro:bit to display the picture.

### Advanced Program

The above program can only save 1 picture because the file is overwritten when a picture is saved. By making use of numbers, we can create a camera program that stores many photos and show them all.

{% embed url="<https://makecode.microbit.org/_RY4VyqdWm7zT>" %}

### Sample Code

[1. Taking and Displaying Pictures (Extension0.5.7)](https://makecode.microbit.org/_ATq6rYToD0K0)

[2. Advanced Camera Program (Extension0.5.7)](https://makecode.microbit.org/_LqehKgCrmhbF)

### Extension Version and Updates

There may be updates to extensions periodically, please refer to the following link to update/downgrade your extension.

[Makecode Extension Update](https://kittenbothk-eng.readthedocs.io/en/latest/Makecode/makecode_extensionUpdate.html)

### FAQ

#### 1: There is no reaction after pressing the buttons on the Micro:bit.

· A: This is because KOI has a longer boot time than Micro:bit. When the power is turned on, Micro:bit has already ran the code for KOI initialization before KOI is ready.

· Solution: Reset your Micro:bit after KOI has been turned on. (The trick is to let KOI power on completely before initialization.)

#### 2: Does KOI work with 3V input?

· A: No, KOI only works with 5V.

#### 3: The picture appears noisy and there are black bars when I view the pictures on my computer.

· A: This is because KOI’s camera is not a phone camera, the quality and resolution is not as good. The black bars are caused by the difference in aspect ratio, since our computer monitors are typically 16:9 and KOI is 1:1, black bars would appear.