Inky pHAT Driver
Inky pHAT is a 212x104 pixel e-paper display, available in red/black/white, yellow/black/white and black/white. It’s great for nametags and displaying very low frequency information such as a daily calendar or weather overview.
Inky wHAT is a 400x300 pixel e-paper display available in red/black/white, yellow/black/white and black/white. It’s got tons of resolution for detailed daily todo lists, multi-day weather forecasts, bus timetables and more.
The Python pip package is named inky, install with:
sudo pip install inky
The Inky library contains modules for both the pHAT and wHAT, load the InkyPHAT one as follows:
from inky import InkyPHAT
You’ll then need to pick your colour, one of ‘red’, ‘yellow’ or ‘black’ and instantiate the class:
inkyphat = InkyPHAT('red')
If you’re using the wHAT you’ll need to load the InkyWHAT class from the Inky library like so:
from inky import InkyWHAT inkywhat = InkyWHAT('red')
Once you’ve initialised Inky, there are only three methods you need to be concerned with:
Set a PIL image, numpy array or list to Inky’s internal buffer. The image dimensions should match the dimensions of the pHAT or wHAT you’re using.
You should use PIL to create an image. PIL provides an ImageDraw module which allow you to draw text, lines and shapes over your image. See: https://pillow.readthedocs.io/en/stable/reference/ImageDraw.html
Set the border colour of you pHAT or wHAT.
colour should be one of inky.RED, inky.YELLOW, inky.WHITE or inky.BLACK with available colours depending on your diplay type.
Update The Display
Once you’ve prepared and set your image, and chosen a border colour, you can update your e-ink display with:
If you’re migrating code from the inkyphat library you’ll find that much of the drawing and image manipulation functions have been removed from Inky. These functions were always supplied by PIL, and the recommended approach is to use PIL to create and prepare your image before setting it to Inky with set_image().
- Enhancement: Added support for red/b/w high-temp Inky wHAT
- BugFix: Reverted normal red LUTs to correct values
- Enhancement: Added support for display variant detection
- Enhancement: Added DocStrings
- BugFix: Fixed set_border for all colours
- BugFix: Yellow Inky pHAT now yellow instead of brown/black
- Enhancement: Performance tweak for set_image
- Initial Release
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