led-test.py

import time
import board
import busio
import random
from adafruit_ht16k33 import matrix

i2c = busio.I2C(board.SCL, board.SDA)

matrix = matrix.Matrix8x8(i2c, auto_write=False)

matrix.fill(0)

col_max = 8
row_max = 8
blinkIndex = [1, 2, 3, 4, 3, 2, 1]

frames = [
	 [[0, 0, 1, 1, 1, 1, 0, 0],
          [0, 1, 1, 1, 1, 1, 1, 0],
	  [1, 1, 1, 1, 1, 1, 1, 1],
	  [1, 1, 1, 1, 1, 1, 1, 1],
	  [1, 1, 1, 1, 1, 1, 1, 1],
	  [1, 1, 1, 1, 1, 1, 1, 1],
	  [0, 1, 1, 1, 1, 1, 1, 0],
	  [0, 0, 1, 1, 1, 1, 0, 0]],

	 [[0, 0, 0, 0, 0, 0, 0, 0],
	  [0, 1, 1, 1, 1, 1, 1, 0],
	  [1, 1, 1, 1, 1, 1, 1, 1],
	  [1, 1, 1, 1, 1, 1, 1, 1],
	  [1, 1, 1, 1, 1, 1, 1, 1],
	  [1, 1, 1, 1, 1, 1, 1, 1],
	  [0, 1, 1, 1, 1, 1, 1, 0],
	  [0, 0, 1, 1, 1, 1, 0, 0]],

	 [[0, 0, 0, 0, 0, 0, 0, 0],
	  [0, 0, 0, 0, 0, 0, 0, 0],
	  [0, 0, 1, 1, 1, 1, 0, 0],
	  [1, 1, 1, 1, 1, 1, 1, 1],
	  [1, 1, 1, 1, 1, 1, 1, 1],
	  [1, 1, 1, 1, 1, 1, 1, 1],
	  [0, 0, 1, 1, 1, 1, 0, 0],
	  [0, 0, 0, 0, 0, 0, 0, 0]],

	 [[0, 0, 0, 0, 0, 0, 0, 0],
	  [0, 0, 0, 0, 0, 0, 0, 0],
	  [0, 0, 0, 0, 0, 0, 0, 0],
	  [0, 0, 1, 1, 1, 1, 0, 0],
	  [1, 1, 1, 1, 1, 1, 1, 1],
	  [0, 1, 1, 1, 1, 1, 1, 0],
	  [0, 0, 0, 1, 1, 0, 0, 0],
	  [0, 0, 0, 0, 0, 0, 0, 0]],

	 [[0, 0, 0, 0, 0, 0, 0, 0],
	  [0, 0, 0, 0, 0, 0, 0, 0],
	  [0, 0, 0, 0, 0, 0, 0, 0],
	  [0, 0, 0, 0, 0, 0, 0, 0],
	  [1, 0, 0, 0, 0, 0, 0, 1],
	  [0, 1, 1, 1, 1, 1, 1, 0],
	  [0, 0, 0, 0, 0, 0, 0, 0],
	  [0, 0, 0, 0, 0, 0, 0, 0]]
]

def draw_image(matrix, image):
	for col in range(col_max):
		for row in range(row_max):
			matrix[row, col] = image[row][col]

def draw_pupil(matrix, x, y):
	x = int(x)
	y = int(y)
	matrix[x, y] = 0
	matrix[x + 1, y] = 0
	matrix[x, y + 1] = 0
	matrix[x + 1, y + 1] = 0


blinkCountdown = 100
gazeCountdown = 75
gazeFrames = 50
pupilSpeed = 0.5
eyeX = 3
eyeY = 3
newX = 3
newY = 3
while True:
	matrix.fill(0)

	if blinkCountdown < len(blinkIndex):
		currentImageIndex = blinkIndex[blinkCountdown]
	else:
		currentImageIndex = 0

	draw_image(matrix, frames[currentImageIndex])
	draw_pupil(matrix, eyeX, eyeY)
	matrix.show()

	blinkCountdown -= 1
	if blinkCountdown <= 0:
		blinkCountdown = random.randrange(5, 180)

	gazeCountdown -= 1
	if eyeX < newX :
		eyeX += pupilSpeed
	elif eyeX > newX :
		eyeX -= pupilSpeed
	if eyeY < newY :
		eyeY += pupilSpeed
	elif eyeY > newY :
		eyeY -= pupilSpeed
	if gazeCountdown <= 0 :
		newX = random.randrange(2, 5)
		newY = random.randrange(2, 5)
		gazeCountdown = random.randrange(50, 120)


	time.sleep(.03)

led.service

[Unit]
Description=Led service

[Service]
ExecStart=/usr/bin/python3 /home/pi/led-test/led-test.py
User=pi

[Install]
WantedBy=multi-user.target