29. 8x16 Matrix Module(EF05029)
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.
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
29.5. Quick to Start
29.5.1. Materials Required and Diagram
Connect the 8x16 Matrix module to the IIC port in the Nezha expansion board as the picture shows.
29.6. MakeCode Programming
29.6.1. Step 1
Click “Advanced” in the MakeCode drawer to see more choices.
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.
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.
29.6.2. Step 2
29.6.3. Code as below:
29.6.4. Link
Link: https://makecode.microbit.org/_H1Dec3A9iDDM
You may also download it directly below:
29.6.5. Result
The expresssions display on the 8x16 matrix module.
29.7. Python Programming
29.7.1. Step 1
Download the package and unzip it: PlanetX_MicroPython
Go to Python editor
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.
29.7.2. Step 2
29.7.3. 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()
29.7.4. 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.