ramp_brightness.py

# Crickit library demo - NeoPixel terminal
# Note: On CPX Crickit, NeoPixel pin is normally connected to A1, not to seesaw,
# so this demo would not control the NeoPixel terminal.
# On the Crickit FeatherWing, the NeoPixel terminal is controlled by seesaw.

# pylint can't figure out "pixel" can be indexed.
# pylint: disable=unsupported-assignment-operation

import time
from adafruit_crickit import crickit

PIXELS = 30

crickit.init_neopixel(PIXELS)

crickit.neopixel.fill(0)

# Assign to a variable to get a short name and to save time.
pixel = crickit.neopixel

colors = [
    (100, 0, 0),
    (0, 100, 0),
    (0, 0, 100),
    (100, 100, 100)
]

offset = 0
color = (75, 0, 100)

pixel.fill(color)

while True:
    for i in range(100, -1, -1):
        brightness = i / 100
        pixel.brightness = brightness
        pixel.fill(color)
        # pixel.fill(tuple([int(i * brightness) for i in color]))
        # pixel.show()
        print(brightness)
        time.sleep(0.05)
    time.sleep(1)
    for i in range(101):
        brightness = i / 100
        pixel.brightness = brightness
        pixel.fill(color)
        #pixel.fill(tuple([int(i * brightness) for i in color]))
        # pixel.show()
        print(brightness)
        time.sleep(0.05)
    time.sleep(1)