Displaying Text

English strings can be displayed on the KOI screen.

Displaying Text

Loading Extensions

Search "KOI" in the search bar.

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

https://github.com/KittenBot/pxt-koi

Blocks for displaying text:

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.

Sample Program:

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)

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

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.