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https://github.com/sanko/rpi-unicornhathd
Perl wrapper for the Unicorn Hat HD by Pimoroni
https://github.com/sanko/rpi-unicornhathd
gpio led-matrix-displays perl pimoroni pimoroni-unicorn-hat-hd raspberry-pi rpi spi unicorn-hat-hd
Last synced: 12 days ago
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Perl wrapper for the Unicorn Hat HD by Pimoroni
- Host: GitHub
- URL: https://github.com/sanko/rpi-unicornhathd
- Owner: sanko
- License: other
- Created: 2017-09-25T19:36:58.000Z (about 7 years ago)
- Default Branch: master
- Last Pushed: 2020-01-02T00:00:44.000Z (almost 5 years ago)
- Last Synced: 2024-05-09T10:16:22.292Z (7 months ago)
- Topics: gpio, led-matrix-displays, perl, pimoroni, pimoroni-unicorn-hat-hd, raspberry-pi, rpi, spi, unicorn-hat-hd
- Language: Perl
- Homepage: https://metacpan.org/pod/RPi::UnicornHatHD
- Size: 30.3 KB
- Stars: 2
- Watchers: 3
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Changelog: Changes
- Funding: .github/FUNDING.yml
- License: LICENSE
Awesome Lists containing this project
README
[](https://travis-ci.org/sanko/RPi-UnicornHatHD) [](https://metacpan.org/release/RPi-UnicornHatHD)
# NAME
RPi::UnicornHatHD - Use Pimoroni's Awesome Unicorn HAT HD in Perl
# SYNOPSIS
```perl
use RPi::UnicornHatHD;
my $display = RPi::UnicornHatHD->new();
while (1) { # Mini rave!
$display->set_all(sprintf '#%06X', int rand(hex 'FFFFFF'));
for (0 .. 100, reverse 0 .. 100) {
$display->brightness($_ / 100);
$display->show();
}
}
```
# DESCRIPTION
Pimoroni's Unicorn HAT HD crams 256 RGB LEDs, in a 16x16 matrix, onto a single HAT for your Raspberry Pi. Use it for scrolling news or stock quotes. Mount it somewhere as a mood light. Build a binary clock. Uh. I don't know, you'll think of something.
# METHODS
Use these to make pretty pictures.
## `new()`
```
$display = RPi::UnicornHatHD->new();
```
Creates a new object representing your Unicorn Hat HD. Obviously.
## `brightness($b)`
```
$display->brightness(.25); # For tinkering at 1a
```
Set the display brightness between `0.0` and `1.0`. The default is `0.5`.
## `clear()`
```
$display->clear;
```
Clears the display matrix.
This does not clear the display; it simply resets the 'canvas' for you.
## `get_pixel($x, $y)`
```perl
my ($r, $g, $b) = $display->get_pixel(10, 15);
```
Returns the color this pixel will display.
## `off()`
```
$display->off;
```
Clears the display matrix and immediately updates the Unicorn Hat HD.
This turns off all the pixels.
## `rotation($r)`
```
$display->rotation(180);
```
Set the display rotation in degrees. Actual rotation will be snapped to the
nearest 90 degrees.
## `set_all($r, $g, $b)`
```
$display->set_all(0xFF, 0, 0);
$display->set_all('#FF0000');
```
Turns the entire display a single color.
Either...
```
$r = Amount of red from 0 to 255
$g = Amount of green from 0 to 255
$b = Amount of blue from 0 to 255
```
...or...
```
$h = Hex triplet from #000000 to #FFFFFF
```
## `set_pixel($x, $y, $r, $g, $b)`
```perl
for my $x (1..10) {
$display->set_pixel($x, 10, 1, 1, 1);
}
$display->set_pixel(0, 0, '#FFF000');
```
Set a single pixel to RGB color.
```
$x = Horizontal position from 0 to 15
$y = Vertical position from 0 to 15
```
...and either...
```
$r = Amount of red from 0 to 255
$g = Amount of green from 0 to 255
$b = Amount of blue from 0 to 255
```
...or...
```
$h = Hex triplet from #000000 to #FFFFFF
```
## `show()`
```
$display->show;
```
Outputs the contents of the matrix buffer to your Unicorn HAT HD.
# SEE ALSO
- Buy one: [http://shop.pimoroni.com/products/unicorn-hat-hd](http://shop.pimoroni.com/products/unicorn-hat-hd)
- GPIO Pinout: [http://pinout.xyz/pinout/unicorn\_hat\_hd](http://pinout.xyz/pinout/unicorn_hat_hd)
- Github: [https://github.com/sanko/RPi-UnicornHatHD](https://github.com/sanko/RPi-UnicornHatHD)
# LICENSE
Copyright (C) Sanko Robinson.
This library is free software; you can redistribute it and/or modify
it under the terms of the Artistic License 2.
# AUTHOR
Sanko Robinson