29. 8x16 Matrix Module

29.1. Introduction

8 x 16 Matrix module is a kind of 8 x 16 matrix screen that can display numbers, commonly used letters and symbols with scrolling-displaying function.

../_images/05029_01.png

29.2. Characteristic


  • Designed in RJ11 connections, easy to plug.

29.3. Specification


Item Parameter
SKU EF05029
Connection RJ11
Type of Connection IIC
Working Voltage 3.3V

29.4. Outlook


../_images/05029_02.png

29.5. Quick to Start


Materials Required and Diagram


  • Connect the 8x16 Matrix module to the IIC port in the Nezha expansion board as the picture shows.

microbitplanetX\./images/05029_03.png

29.6. MakeCode Programming


Step 1

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

../_images/05001_04.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_05.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/05029_06.png

Result

  • The expresssions display on the 8x16 matrix module.

29.7. Python Programming


Step 1

Download the package and unzip it: PlanetX_MicroPython

Go to Python editor

../_images/05001_072.png

We need to add matrix.py for programming. Click “Load/Save” and then click “Show Files (1)” to see more choices, click “Add file” to add matrix.py from the unzipped package of PlanetX_MicroPython.

../_images/05001_081.png ../_images/05001_091.png ../_images/05029_10.png

Step 2

Reference

from microbit import *
from matrix import *
matrix = MATRIX()
x, y = 0, 0
while True:
    for y in range(8):
        for x in range(16):
            matrix.set_matrix_draw(x, y)
    matrix.set_matrix_clear()

Result

  • Each LED lights on from the sequence of left to right and up to down, then they light off after all the LEDs light up.

29.8. Relevant File


29.9. Technique File