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Content """ Knight Rider Written by: PetePriority (basically just a modified non-blocking version of ledfx.kitt) """ import leds import ledfx import utime import math import buttons class KnightRider: def __init__(self, enabled=False, delay=80, power=10, minimum=0.3, rgb=[255,0,0], spectrum=[], halo=False ): self.delay = delay self.power = power self.minimum = minimum self.rgb = rgb self.spectrum = spectrum self.halo = halo self.kitt_table = [((-math.cos(math.pi * (x / 10.0))) + 1) / 2.0 for x in range(21)] self.kitt_table = [math.pow(x, power) * (1 - minimum) + minimum for x in self.kitt_table] self.cycle = 0 self.enabled = enabled leds.clear() leds.set_rocket(0, 0) leds.set_rocket(1, 0) leds.set_rocket(2, 0) def toggle_enabled(self): self.enabled = not self.enabled leds.clear() def toggle_halo(self): if self.halo: self.halo = False leds.clear() else: self.halo = ledfx.halo def cycle_speeds(self): self.delay = (self.delay + 20) % 120 def work(self): if not self.enabled: return j = self.cycle if self.cycle > 10: j = 20 - self.cycle if self.spectrum == []: used_leds = 11 # set the color values to the LEDs by multiplying the given color # value with the corresponding brightness value in the kitt table output = [[int(x * y) for y in self.rgb] for x in self.kitt_table[j : (j + used_leds)]] else: used_leds = len(spectrum) # multiply the color values in the corresponding spectrum tuple # with the brightness value in the kitt table output = [ [int(y * self.kitt_table[j + x]) for y in spectrum[x]] for x in range(used_leds) ] if self.halo: self.halo(output) leds.set_all(output) utime.sleep_ms(self.delay) self.cycle = (self.cycle + 1) % 20