Logical NeoPixel chains
Inspired by a discussion with jim_lee on the Adafruit forums.
This lets you layer logical groups of NeoPixels over a longer physical strip/ring. It lets you treat contiguous subsets of pixels as separate strips.
Setup requires 3 steps:
- create the physical NeoPixel object
- create a zone collection on top of that
- add zones to the collection
Each zone added (and returned) can be treated the same as a NeoPixel object.
strip = neopixel.NeoPixel(board.D5, 60, brightness=1, auto_write=False)
collection = ZoneCollection(strip)
zone_1 = collection.add_zone(0, 20)
zone_2 = collection.add_zone_with_size(20, 20)
zone_3 = collection.add_zone(40, 60)
They can be filled with a color:
zone_1.fill((randint(128, 255), randint(0, 255), randint(0, 255)))
Individual elements can be set:
zone_2[i] = (0x00, 0xFF, 0x00)
As can slices:
zone_3[start:end] = [(0x00, 0x00, 0xFF)] * size
If the NeoPixel is created with auto_write=False, it can be updated by calling its show() method, the ZoneCollection's or a Zone's. Calling show() on a Zone will cause show() to be called on its collection, updating all the zones.
See code.py for more usage examples