Make: Volume 86

PROJECTS: LED Moon/Period Calendar

import board

import neopixel

Then define the pixel pin on the board to control

all 250 LEDs. If you’re not using the 2040 Stamp

Round Carrier, ensure that you have the right

pixel pin for your board. Define the number of

NeoPixels:

pixel_pin = board.GP11

num_pixels = 250

Next, write an array for a total of 30 star units

(moons) of 10 LEDs each. Make sure to get the

numbers right — remember, some LEDs overlap!

moons = [

[0, 1, 2, 3, 4, 5, 6, 7,

8, 9],

[10, 6, 7, 11, 12, 13, 14,

15, 16, 17],

[18, 14, 15, 19, 20, 21, 22,

23, 24, 25],

[26, 22, 23, 27, 28, 29, 30,

31, 32, 33],

[34, 30, 31, 35, 36, 37, 38,

39, 40, 41], ...