2023.3.21

Upload the week 8 assignment
Week 8 's topic is about setting up and using neopixel from adafruit

I also integrate the neopixel to week7's lab., making neopixel as a volume visualizer/VU meter.
So as the volume pot turn from 0 to 1.0, the light will change from white - blue- green - red.

note: the original wekk7 lab has no visualizer, I was trying to have fun with leds I have. But I do not have neopixel at that time.
So there is different version of week7 lab.