### Microbit + Micro:pixel reacting to music

This post discusses a simple way to get the Micropixel-Micro:Bit combination to change the Neopixels based on the music. Using the accelerometer on the Micro:Bit to provide x,y,z values to provide colour values for the neopixels; the micropixel sits over the speaker and vibrations are picked up.

Simple but it roughly works (see the video at the end of the post).

Code
from microbit import *
import neopixel, random

# Setup the Neopixel strip on pin0 with a length of 2 pixels
np = neopixel.NeoPixel(pin0, 32)

while True:
pxl=11
rd=int(abs(accelerometer.get_x())/20)
gr=int(abs(accelerometer.get_y())/20)
bl=int(abs(accelerometer.get_z())/20)
t1=10
np[pxl] = (0, 0, bl)
np[pxl-1] = (rd, gr, 0)
np[pxl+1] = (0, gr, rd)
np[pxl-2] = (rd, 0, 0)
np[pxl+2] = (0, gr,0)
np.show()
sleep(t1)
np[pxl] = (0, 0, 0)
np[pxl+1] = (0, 0, 0)
np[pxl-1] = (0, 0, 0)
np[pxl+2] = (0, 0, 0)
np[pxl-2] = (0, 0, 0)

Video of it action using Revolve by cinematrix available under Creative Commons Licence (http://ccmixter.org/files/hisboyelroy/430 ).

Always obey the safety advice provided by Micro:bit https://microbit0.blob.core.windows.net/pub/jedfednb/Parent-and-Teacher-micro-bit-safety-guide.pdf

All opinions in this blog are the Author's and should not in any way be seen as reflecting the views of any organisation the Author has any association with. Twitter @scottturneruon

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