'''
Shower Timer with a fixed time of 16 minutes
http://lucstechblog.blogspot.com
'''

import machine
import neopixel
import utime

# Set up the neopixels
numpixels = 12
pixelpin = machine.Pin(5)
neopixels = neopixel.NeoPixel(pixelpin, numpixels)

# Set up the timer
minutes = .2
seconds = minutes * 60

print("Starting timer")
for i in range(numpixels):
    neopixels[i] = (0, 255, 0)  # Set all neopixels to green
neopixels.write()

while seconds > 0:
    # Update the neopixels
    remaining = seconds / (minutes * 60)
    num_lit = int(numpixels * remaining)
    for i in range(numpixels):
        if i < num_lit:
            neopixels[i] = (0, 255, 0)  # Set lit neopixels to green
        else:
            neopixels[i] = (0, 0, 0)  # Set unlit neopixels to black
    neopixels.write()
    # Decrement the timer
    seconds -= 1
    utime.sleep(1)
    
print("Timer finished")
for i in range(numpixels):
    neopixels[i] = (255, 0, 0)  # Set all neopixels to red
neopixels.write()