LCD Orientation

One advantage of the KOI is that camera is able to rotate from 0°~180°, however the image may be reversed on the LCD when the camera is rotated, thus we may need to change the LED orientation based on our use case.

Changing LCD Orientation

Load KOI Extension: https://github.com/KittenBot/pxt-koi

Loading Extensions

Block for Changing LCD Orientation:

From the drop down menu, there are 3 types of orientation to choose from.

Sample Program:

Program Flow

Download the program to Micro:bit.

1: When button A is pressed, the LCD is set to Front mode. The image looks correct when the camera is facing towards you.

2: When button B is pressed, the LCD is set to Back mode. The image looks correct when the camera is facing away from you.

Sample Code

LCD Orientation (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.