Hey everyone!

ht16k33multi-7-segment-love-elixir1200×476 82.6 KB

I just published a small but handy Elixir library called Ht16k33Multi, designed to drive multiple 4-digit 7-segment displays powered by the HT16K33 LED driver chip via I²C.

What’s It For?

If you’re working with LED displays on Nerves, Raspberry Pi, or any I²C-capable hardware and want to display characters across multiple 7-segment devices, this library makes it super easy to:

• Manage multiple display devices using GenServer names
• Write characters and words to one or many 7-segment displays
• Control dimming and blinking

Features

• Display numbers on a 7-segment display
• Display words using a built-in 7-segment font
• Support for multiple displays (hence the “multi” in the name!)
  → Easily chain HT16K33 chips to show full sentences
• Use built-in blinking and dimming features of the HT16K33
• Well-documented with inline examples

Example

# Start the Ht16k33Multi GenServer
iex> Ht16k33Multi.start_link()

# Write to the display
iex> Ht16k33Multi.write("Hola")

# Enable blinking
iex> Ht16k33Multi.blinking_on()

Installation

Add the dependency in your mix.exs:

def deps do
  [
    {:ht16k33_multi, "~> 0.1.0"}
  ]
end

Then fetch it with:

mix deps.get

Learn More

• Hexdocs
• Hex
• GitHub