20.3. The Angry Cutebot#

Purpose#

Display the expressions through an 8 x 16 dot matrix screen.

Materials#

1 × Cutebot smart car

1 × ELECFREAKS 8x16 Matrix Module

Hardware Connections#

Plug the 8*16 dot matrix screen into the IIC interface of cutebot car, you need to pay attention to whether the connection interface is correct.

../../../_images/cutebot-case-25-step-01.png

Software#

MicroSoft Makecode

Program#

Add extensions#

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

../../../_images/cutebot-case-24-01.png

For programming, we need to add a package. Click “Extensions” at the bottom of the drawer and then search Cutebot in the dialogue box to download it.

../../../_images/cutebot-case-24-02.png

In order to program the 8*16 dot matrix screen, we need to add a code library. Find “Extensions” at the bottom of the code drawer and click on it. This will bring up a dialog box. Search for https://github.com/elecfreaks/pxt-Matrix-8x16 and click to Download it.

../../../_images/cutebot-case-25-03.png

Note: If you get a warning indicating some packages will be removed because of incompatibility issues, you can follow the prompts or create a new project in the menu.

Program#

../../../_images/cutebot-case-25-04.png

Link: https://makecode.microbit.org/_8TiMd6VcEd6f

You can also download the program directly from the following webpage.

Result#

When the micro:bit V2 logo is touched, the 8×16 dot matrix screen displays expressions and the cutebot smart car moves forward.

Exploration#