93 lines
3.2 KiB
Python
93 lines
3.2 KiB
Python
# Magic Light Bulb remote color mixer
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# Sends RGB color values, read from three faders on CPB to the bulb
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# https://www.magiclightbulbs.com/collections/bluetooth-bulbs
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import adafruit_ble
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from adafruit_ble.advertising.standard import ProvideServicesAdvertisement
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from adafruit_ble_magic_light import MagicLightService
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import _bleio
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import board
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from analogio import AnalogIn
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from adafruit_circuitplayground import cp
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def find_connection():
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for connection in radio.connections:
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if MagicLightService not in connection: # Filter services
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continue
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return connection, connection[MagicLightService]
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return None, None
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radio = adafruit_ble.BLERadio()
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def scale(value):
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# Scale a value from 0-65535 (AnalogIn range) to 0-255 (RGB range)
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return int(value / 65535 * 255)
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a4 = AnalogIn(board.A4) # red slider
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a5 = AnalogIn(board.A5) # green slider
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a6 = AnalogIn(board.A6) # blue slider
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cp.pixels.brightness = 0.1
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dimmer = 1.0
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active_connection, bulb = find_connection() # In case already connected
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while True:
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if not active_connection: # There's no connection, so let's scan for one
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cp.pixels[0] = (60, 40, 0) # set CPB NeoPixel 0 to yellow while searching
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print("Scanning for Magic Light...")
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# Scan and filter for advertisements with ProvideServicesAdvertiesment type
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for advertisement in radio.start_scan(ProvideServicesAdvertisement):
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# Filter further for advertisements with MagicLightService
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if MagicLightService in advertisement.services:
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active_connection = radio.connect(advertisement)
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print("Connected to Magic Light")
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cp.pixels[0] = (0, 0, 255) # Set NeoPixel 0 to blue when connected
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# Play a happy tone
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cp.play_tone(440, 0.1)
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cp.play_tone(880, 0.1)
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print("Adjust slide potentiometers to mix RGB colors")
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try:
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bulb = active_connection[MagicLightService]
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except _bleio.ConnectionError:
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print("disconnected")
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continue
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break
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radio.stop_scan() # Now that we're connected, stop scanning
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while active_connection.connected: # Connected, now we can set attrs to change colors
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# Toggle slide switch to go to half or full brightness
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if cp.switch:
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cp.red_led = True
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dimmer = 0.5
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else:
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cp.red_led = False
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dimmer = 1.0
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# Press the 'A' button to momentarily black the bulb
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if cp.button_a:
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dimmer = 0.0
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r = scale(a4.value * dimmer)
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g = scale(a5.value * dimmer)
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b = scale(a6.value * dimmer)
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# Press the 'B' button to momentarily white the bulb
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if cp.button_b:
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r, g, b = (255, 255, 255)
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color = (r, g, b)
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try:
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bulb[0] = color # Send color to bulb's color characteristic
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except _bleio.ConnectionError:
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print("disconnected")
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continue
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cp.pixels[2] = (r, 0, 0)
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cp.pixels[3] = (0, g, 0)
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cp.pixels[4] = (0, 0, b)
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cp.pixels[7] = (color)
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active_connection = None # Not connected, start scanning again
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cp.pixels[0] = (60, 40, 0)
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