A MicroPython library for the MAX7219 8x8 LED matrix driver, SPI interface, supports cascading and uses framebuf
import matrix
matrix = matrix.Matrix()
At the moment, only three methods (text, scroll and shape) added to the Matrix class whitch samples can be found in /examples directory, more will be added later. Fill free to make suggestions, pull requests are wellcome.
matrix.text(txt = 'F', x = 0, y = 0, c = 1)
which x is horizontal offset default is zero, y is vertical offset default is zero and c is color default is 1.
matrix.scroll(txt = 'Scrolling text example', s = 0.1, c = 1, loops = 2)
which x, y and c as above, s is speed of scrolling default is 0.1 second and loops is the number of times one text can be scrolled. Default is zero which means unlimited.
shape = [[0,0,0,0,0,0,0,0], [0,1,1,0,0,1,1,0], [1,0,0,1,1,0,0,1], [1,0,0,0,0,0,0,1], [1,0,0,0,0,0,0,1], [0,1,0,0,0,0,1,0], [0,0,1,0,0,1,0,0], [0,0,0,1,1,0,0,0]]
matrix.shape(patern = shape, delay = 0)
which shape is an array of values zero or one values for each pixel. the aboce shape, will display a heart.
The default value for delay (not the best name, but this was the best I found!) is zero. If zero, it just display the shape, but if is set to some values, led matrix will start to display the shape one pixel (In our case, one led) at a time by the interval amount set for delay variable.
You can find more examples under examples directory.
| Wemos D1 Mini | max7219 8x8 LED Matrix |
|---|---|
| 5V | VCC |
| GND | GND |
| D7 MOSI (GPIO13) | DIN |
| D8 CS (GPIO15) | CS |
| D5 SCK (GPIO14) | CLK |
| PyBoard | max7219 8x8 LED Matrix |
|---|---|
| VIN | VCC |
| GND | GND |
| X8 MOSI | DIN |
| X5 CS | CS |
| X6 SCK | CLK |
- Forked from mcauser/micropython-max7219
- Based on deshipu's max7219.py
- micropython.org
- Docs on framebuf