1.3. Case 01: Password Recognition#

1.3.1. Purpose#


To make the AI Lens be able to recognize the password on the card.

../../_images/05035_01.png

Materials Required and Connection Diagram#

  • Connect the AI Lens to the IIC port on the Nezha expansion board as the picture shows.

../../_images/05035_01_03.png

1.3.2. MakeCode Programming#


Step 1#

Click “Advanced” in the MakeCode drawer to see more choices.

../../_images/05001_041.png

We need to add a package for programming. Click “Extensions” in the bottom of the drawer and search with “PlanetX” in the dialogue box to download it.

../../_images/05001_051.png

Note: If you met a tip indicating that the codebase will be deleted due to incompatibility, you may continue as the tips say or build a new project in the menu.

Step 2#

Code as below:#

../../_images/05035_01_06.png

Result#

  • Place the cards named 0,4,9 accordingly in the front of the lens, a smile face should display on the micro:bit; or it displays a sad face.