When I connect the board the LED is lighting up green and yellow (or might be orange), turns off for half a second and flashes cyan four times. Line 4 in the code is import neopixel. When I enter a blank line before that line, the LED flashes 5 times. So I guess, the problem has something to do with the neopixel library?
Things I already tried:
- updating CircuitPython to 6.3 again
- updating the UF2 Bootloader from 2.0 to 3.13.0
- re-downloading neopixel.mpy in lib and deleting it altogether (no difference if present or not)
- putting an older version of neopixel.mpy in lib (resulted in green/purple error indicator)
I ran out of things to try and hope that you guys might have an idea what I could do here.
Here is the code for reference:
Code: Select all
"""CircuitPython Essentials NeoPixel example"""
import time
import board
import neopixel
pixel_pin = board.A1
num_pixels = 8
pixels = neopixel.NeoPixel(pixel_pin, num_pixels, brightness=0.3, auto_write=False)
def wheel(pos):
# Input a value 0 to 255 to get a color value.
# The colours are a transition r - g - b - back to r.
if pos < 0 or pos > 255:
return (0, 0, 0)
if pos < 85:
return (255 - pos * 3, pos * 3, 0)
if pos < 170:
pos -= 85
return (0, 255 - pos * 3, pos * 3)
pos -= 170
return (pos * 3, 0, 255 - pos * 3)
def color_chase(color, wait):
for i in range(num_pixels):
pixels[i] = color
time.sleep(wait)
pixels.show()
time.sleep(0.5)
def rainbow_cycle(wait):
for j in range(255):
for i in range(num_pixels):
rc_index = (i * 256 // num_pixels) + j
pixels[i] = wheel(rc_index & 255)
pixels.show()
time.sleep(wait)
RED = (255, 0, 0)
YELLOW = (255, 150, 0)
GREEN = (0, 255, 0)
CYAN = (0, 255, 255)
BLUE = (0, 0, 255)
PURPLE = (180, 0, 255)
while True:
pixels.fill(RED)
pixels.show()
# Increase or decrease to change the speed of the solid color change.
time.sleep(1)
pixels.fill(GREEN)
pixels.show()
time.sleep(1)
pixels.fill(BLUE)
pixels.show()
time.sleep(1)
color_chase(RED, 0.1) # Increase the number to slow down the color chase
color_chase(YELLOW, 0.1)
color_chase(GREEN, 0.1)
color_chase(CYAN, 0.1)
color_chase(BLUE, 0.1)
color_chase(PURPLE, 0.1)
rainbow_cycle(0) # Increase the number to slow down the rainbow
