4-mic Array LED Control Lessons

Products & Technology ReSpeaker
4

Hi Stephen,


  1. Install the git client: sudo apt install -y git
  2. Prepare GIT: git config --global user.name “John Doe” && git config --global user.email [email protected]
  3. Create a development directory and change into it: mkdir ~/Development && cd ~/Development
  4. Get the APA102 Library and sample light programs: git clone https://github.com/tinue/apa102-pi.git && cd apa102-pi
  5. cd apa102-pi && nano sample.py; Update as below, Ctrl-X and “Yes” to save. you can change any led and any color at strip.set_pixel_rgb(5, 0xFF0000).



    #!/usr/bin/env python3

    “”“Ultra simple sample on how to use the library”""

    from driver import apa102

    import time

    from gpiozero import LED

    power = LED(5)

    power.on()

Initialize the library and the strip

strip = apa102.APA102(num_led=12, global_brightness=100, mosi = 10, sclk = 11,

order=‘rbg’)


Turn off all pixels (sometimes a few light up when the strip gets power)

strip.clear_strip()


Prepare a few individual pixels

strip.set_pixel_rgb(5, 0xFF0000) # Red

strip.set_pixel_rgb(6, 0xFFFFFF) # White

strip.set_pixel_rgb(8, 0x00FF00) # Green

print(“cc”)

Copy the buffer to the Strip (i.e. show the prepared pixels)

strip.show()


Wait a few Seconds, to check the result

time.sleep(1)



6.Run the sample lightshow: ./sample.py.