# Displaying Text

English strings can be displayed on the KOI screen.

### Displaying Text

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

#### **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 displaying text:

<figure><img src="https://kittenbothk-eng.readthedocs.io/en/latest/_images/07.png" alt=""><figcaption></figcaption></figure>

We can add a delay to specify the duration shown.

The coordinates refer to the top left corner of the text. See figure below for explaination of coordinates.

<figure><img src="https://kittenbothk.readthedocs.io/en/latest/_images/04-1.png" alt=""><figcaption></figcaption></figure>

#### Sample Program:

{% embed url="<https://makecode.microbit.org/_0jMehKiwH60v>" %}

### Program

Download the program to Micro:bit.

Pressing button A on the Micro:bit to display “Kittenbot” on the screen. Pressing button B to display “KOI” for 2 seconds.

### Sample Code

[Displaying Text (Extension0.5.7)](https://makecode.microbit.org/_haY9xhetabD6)

### 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: Why does the text disappear after a short while?

· A: Since the dislay of the KOI keeps refreshing, the text cannot persist on the screen for a long time. For displaying persisting text, considering connecting an I2C OLED screen.


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