# Trinket IO demo # Welcome to CircuitPython 3.1.1 :) import board from digitalio import DigitalInOut, Direction, Pull import adafruit_dotstar as dotstar import adafruit_fancyled.adafruit_fancyled as fancy import time import neopixel import random # One pixel connected internally! dot = dotstar.DotStar(board.APA102_SCK, board.APA102_MOSI, 1, brightness=0.2) # Built in red LED led = DigitalInOut(board.D13) led.direction = Direction.OUTPUT # NeoPixel strip (of 16 LEDs) connected on D4 GRIDLEN = 64 grid = neopixel.NeoPixel(board.D4, GRIDLEN, brightness=0.2, auto_write=False, pixel_order=neopixel.GRB) class GlitchPixel: def __init__(self): self.init() self.nsteps = 64 self.step = random.randrange(self.nsteps) def init(self): self.step = 0 self.pos = random.randrange(GRIDLEN) self.color = fancy.CHSV(random.random()).pack() def frame(self): bmask = (0xff * self.step // 32) & 0xff if self.step > self.nsteps/2: bmask = 0xff - bmask mask = (bmask << 16) | (bmask << 8) | (bmask << 0) color = self.color & mask grid[self.pos] = color self.step += 1 if self.step > self.nsteps: self.init() def fade(): reps = 300 + random.randrange(GRIDLEN) hue = random.randrange(256) colors = [fancy.CHSV(hue, 255, v).pack() for v in range(0, 256, 32)] rcolors = colors[:] rcolors.reverse() colors = colors + rcolors for count in range(reps): pos = count % GRIDLEN for color in colors: grid[pos] = color pos -= 1 grid.show() def singleCursor(): red = fancy.CHSV(0, 210, 127).pack() pos = 20 for i in range(80): grid[pos] = red * (i % 2) grid.show() time.sleep(0.08) def sparkle(): white = fancy.CHSV(0, 0, 127).pack() pos = [0,0,0] for i in range(50): for j in range(len(pos)): pos[j] = random.randrange(GRIDLEN) grid[pos[j]] = white grid.show() for p in pos: grid[p] = 0 grid.show() def glitchPulse(): grid.fill(0) pixels = [] for i in range(4): p = GlitchPixel() pixels.append(p) for f in range(1000): for p in pixels: p.frame() grid.show() time.sleep(0.1) def loop(): fade() singleCursor() sparkle() glitchPulse() while True: loop()