https://github.com/jjcarstens/scroll_hat

LED Driver for Pimoroni scroll hat mini and HD
https://github.com/jjcarstens/scroll_hat

hacktoberfest

Last synced: 2 months ago
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LED Driver for Pimoroni scroll hat mini and HD

• Host: GitHub
• URL: https://github.com/jjcarstens/scroll_hat
• Owner: jjcarstens
• License: apache-2.0
• Created: 2021-07-26T13:54:16.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2024-07-15T00:49:54.000Z (6 months ago)
• Last Synced: 2024-10-19T14:03:39.985Z (3 months ago)
• Topics: hacktoberfest
• Language: Elixir
• Homepage:
• Size: 956 KB
• Stars: 7
• Watchers: 3
• Forks: 3
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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README

        
# ScrollHat

Elixir driver for the Pimoroni Scroll Hat LED boards:

* [Scroll HAT mini](https://shop.pimoroni.com/products/scroll-hat-mini)

* [Scroll pHAT HD](https://shop.pimoroni.com/products/scroll-phat-hd)

See the [python library](https://github.com/pimoroni/scroll-phat-hd) also

## Usage

The main interface is via the `ScrollHat.Display` module which interacts

with the IS31FL3731 LED driver according to the pinout for the ScrollHat.

Ensure you start the display to initialize the driver manually or in

your supervision tree:

```elixir

{:ok, _pid} = ScrollHat.Display.start_link()

```

The `draw/1` and `marquee/2` accept a string of text or 2D 7x17 canvas matrix

where each value represents the LED at that location starting from top-left.

Values must be a positive integer, 0-255, where `0` disables the LED and any value

greater than 0 sets the brightness to that level.

When using `marquee/2`, a canvas larger than 7x17 can be supplied in which

the display will attempt to scroll through, left -> right, moving one LED

column at a time.

Use `set_font/1` to change the font of the display to one of the supporting

fonts. **Note**: _Fonts are still in development and may not support every

character which might fail trying to convert a text to a canvas_