node-max7219-led-matrix

Node max7219 led matrix interfacing for raspberry pi

Install

npm install node-max7219-led-matrix

Prerequisites

You'll need the SPI device to be enabled. Check this guide if it's not

The devices are successfully installed in /dev:

$ ls -l /dev/spi*
crw-rw---- 1 root spi 153, 0 Sep 20 01:17 /dev/spidev0.0
crw-rw---- 1 root spi 153, 1 Sep 20 01:17 /dev/spidev0.1

Usage

var max7219LedMatrix = require('node-max7219-led-matrix');

var max7219 = new max7219LedMatrix.max7219("/dev/spidev0.0");
max7219.letter('A');

• Constructor max7219LedMatrix.max7219(device)

Initializes the instance. The device argument is a string specifying the SPI device on which the controller is wired. For example, "/dev/spidev0.0".

• setBrightness(intensity)

Set the brightness of the led. intensity is from 0 to 15.

• clear()

Clear the device display.

• letter(letter, font)

Display a letter on the display with the specific font (optional). Fonts are: CP437_FONT (default), SINCLAIR_FONT, LCD_FONT, UKR_FONT and TINY_FONT.

• showMessage(text, font)

Display the text on the device. One letter at a time.

Example

See in example folder.

Thanks

Thanks to rm-hull python project.