MCH2022 badge?
go to mch2022.badge.team

Content import badge, binascii, hashlib, time class PoliceScanner(): police_colors = ("FF000000", "FF000000", "FF000000", "0000FF00", "0000FF00", "0000FF00") def __init__(self, colors=police_colors): self.colors = colors self.side = -1 self.brightness = 1.0 self.cycle = 0 # keep track of blinking state: 0: on; 1,2,3: just decay; 4: on; 5,6,7: just decay, then change side self.decay = 0.8 self.speed = 0.05 # duration for sleeps in seconds, as for time.sleep() self.leds_intensity = [1, 1, 1, 0, 0, 0] def change_brightness(self, value): self.brightness += float(value) self.brightness = round(self.brightness, 2) self.brightness = max(self.brightness, 0.0) # ensure >= 0.0 self.brightness = min(self.brightness, 1.0) # ensure <= 1.0 def change_decay(self, value): self.decay += float(value) self.decay = round(self.decay, 2) self.decay = max(self.decay, 0.0) # ensure >= 0.0 self.decay = min(self.decay, 1.0) # ensure <= 1.0 def get_GRBW(self, led_pos, brightness): color = self.colors[led_pos] led_colors = [int(brightness * x) for x in binascii.unhexlify(color)] return (led_colors[1], led_colors[0], led_colors[2], led_colors[3]) # grbw def draw(self): # First calc intensity on each led pass for x, intensity in enumerate(self.leds_intensity): new_intensity = intensity * self.decay self.leds_intensity[x] = round(new_intensity, 3) # But side leds gets full intensity every second cycle. (brightness is later) if self.cycle == 3: self.side *= -1 if self.side > 0: self.leds_intensity[3:6] = [1.0, 1.0, 1.0] else: self.leds_intensity[0:3] = [1.0, 1.0, 1.0] self.cycle = (self.cycle + 1) % 4 # print(self.leds_intensity) # Second apply brightness leds = [] for x, intensity in enumerate(self.leds_intensity): leds.append(intensity * self.brightness) # print(leds) # Now we have intensify & brightness, let's apply colors. leds_as_grbw = [] for index, value in enumerate(leds): leds_as_grbw.extend(self.get_GRBW(index, value)) badge.leds_send_data(bytes(leds_as_grbw), 24) def user_colors(name): name_digest = binascii.hexlify(hashlib.sha256(name).digest()) name_colors = (name_digest[0:6], name_digest[6:12], name_digest[12:18], name_digest[18:24], name_digest[24:30], name_digest[30:36]) return list(c.decode() for c in name_colors) def wait(self): time.sleep(self.speed) def test_demo(): scanner = PoliceScanner() while True: scanner.draw() if __name__ == '__main__': test_demo()