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neopixel-xmas-tree.py
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### Sample python code for NeoPixels on Raspberry Pi
### this code is random suggestion for my christmas tree from my family, friends, and other examples on the web
### orginal code: https://github.com/DanStach/rpi-ws2811
import time
import board
import neopixel
import random
import math
import serial
import ctypes
# Choose an open pin connected to the Data In of the NeoPixel strip, i.e. board.D18
# NeoPixels must be connected to D10, D12, D18 or D21 to work.
pixel_pin = board.D18
# The number of NeoPixels
num_pixels = 350
# The order of the pixel colors - RGB or GRB. Some NeoPixels have red and green reversed!
# For RGBW NeoPixels, simply change the ORDER to RGBW or GRBW.
ORDER = neopixel.RGB
pixels = neopixel.NeoPixel(pixel_pin, num_pixels, brightness=0.2, auto_write=False, pixel_order=ORDER)
wait_time = 1
wait_animate = .1
levelobj = (43, 73, 103, 135, 160, 188, 213, 236, 255, 272, 286, 295, 300)
levelgroups = (43, 39, 35, 32, 30, 28, 25, 23, 19, 17, 14, 9, 5)
levelobjcount = len(levelobj)
### colorAll2Color allows two alternating colors to be shown
#
def colorAll2Color(c1, c2):
for i in range(num_pixels):
if(i % 2 == 0): # even
pixels[i] = c1
else: # odd
pixels[i] = c2
pixels.show()
# colorAllColorGroup(colorObject) allows colors to be
# - colorObject: list of color objects. example ((255, 0, 0), (0, 255, 0))
def colorAllColorGroup(colorObject):
colorCount = len(colorObject)
for i in range(num_pixels):
colorIndex = i % colorCount
pixels[i] = colorObject[colorIndex]
pixels.show()
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:
r = g = b = 0
elif pos < 85:
r = int(pos * 3)
g = int(255 - pos*3)
b = 0
elif pos < 170:
pos -= 85
r = int(255 - pos*3)
g = 0
b = int(pos*3)
else:
pos -= 170
r = 0
g = int(pos*3)
b = int(255 - pos*3)
return (r, g, b) if ORDER == neopixel.RGB or ORDER == neopixel.GRB else (r, g, b, 0)
def rainbow_cycle(delay, cycles):
for j in range(255 * cycles):
for i in range(num_pixels):
# " // " this divides and returns the integer value of the quotient.
# It dumps the digits after the decimal
pixel_index = (i * 256 // num_pixels) + j
pixels[i] = wheel(pixel_index & 255)
pixels.show()
time.sleep(delay)
def RGBLoop(delay):
for j in range(3):
# Fade IN
for k in range(256):
if j == 0:
pixels.fill((k, 0, 0))
elif j == 1:
pixels.fill((0, k, 0))
elif j == 2:
pixels.fill((0, 0, k))
pixels.show()
time.sleep(delay)
# Fade OUT
for k in range(256):
if j == 2:
pixels.fill((k, 0, 0))
elif j == 1:
pixels.fill((0, k, 0))
elif j == 0:
pixels.fill((0, 0, k))
pixels.show()
time.sleep(delay)
def FadeInOut(red, green, blue, delay):
r = 0
g = 0
b = 0
for k in range(256):
r = (k/256.0)*red
g = (k/256.0)*green
b = (k/256.0)*blue
pixels.fill((int(r), int(g), int(b)))
pixels.show()
time.sleep(delay)
for k in range(256, -1, -1):
r = (k/256.0)*red
g = (k/256.0)*green
b = (k/256.0)*blue
pixels.fill((int(r), int(g), int(b)))
pixels.show()
time.sleep(delay)
def Twinkle(red, green, blue, Count, SpeedDelay, OnlyOne):
pixels.fill((0,0,0))
for i in range(Count):
pixels[random.randint(0, num_pixels-1)] = (red, green, blue)
pixels.show()
time.sleep(SpeedDelay)
if OnlyOne:
pixels.fill((0,0,0))
time.sleep(SpeedDelay)
def TwinkleRandom(Count, SpeedDelay, OnlyOne):
pixels.fill((0,0,0))
for i in range(Count):
pixels[random.randint(0, num_pixels-1)] = (random.randint(0,255), random.randint(0,255), random.randint(0,255))
pixels.show()
time.sleep(SpeedDelay)
if OnlyOne:
pixels.fill((0,0,0))
time.sleep(SpeedDelay)
def Sparkle(red, green, blue, Count, SpeedDelay):
for i in range(Count):
Pixel = random.randint(0,num_pixels-1)
pixels[Pixel] = (red,green,blue)
pixels.show()
time.sleep(SpeedDelay)
pixels[Pixel] = (0,0,0)
def SnowSparkle(red, green, blue, Count, SparkleDelay, SpeedDelay):
pixels.fill((red,green,blue))
for i in range(Count):
Pixel = random.randint(0,num_pixels-1)
pixels[Pixel] = (255,255,255)
pixels.show()
time.sleep(SparkleDelay)
pixels[Pixel] = (red,green,blue)
pixels.show()
time.sleep(SpeedDelay)
def RunningLights(red, green, blue, WaveDelay):
Position = 0
for j in range(num_pixels*2):
Position = Position + 1
for i in range(num_pixels):
# sine wave, 3 offset waves make a rainbow!
# float level = sin(i+Position) * 127 + 128;
# setPixel(i,level,0,0);
# float level = sin(i+Position) * 127 + 128;
level = math.sin(i + Position) * 127 + 128
r = int((level/255)*red)
g = int((level/255)*green)
b = int((level/255)*blue)
pixels[i] = (r,g,b)
pixels.show()
time.sleep(WaveDelay)
def colorWipe(red, green, blue, SpeedDelay):
for i in range(num_pixels):
pixels[i] = (red, green, blue)
pixels.show()
time.sleep(SpeedDelay)
def theaterChase(red, green, blue, cycles, SpeedDelay):
for j in range(cycles):
for q in range(3):
for i in range(0, num_pixels, 3):
if i+q < num_pixels:
# turn every third pixel on
pixels[i+q] = (red, green, blue)
pixels.show()
time.sleep(SpeedDelay)
for i in range(0, num_pixels, 3):
if i+q < num_pixels:
# turn every third pixel off
pixels[i+q] = (0,0,0)
def theaterChaseRainbow(SpeedDelay):
# cycle all 256 colors in the wheel
for j in range(256):
for q in range(3):
for i in range(0, num_pixels, 3):
# check that pixel index is not greater than number of pixels
if i+q < num_pixels:
# turn every third pixel on
# c = Wheel( (i+j) % 255);
# setPixel(i+q, *c, *(c+1), *(c+2));
pixels[i+q] = wheel((i+j) % 255)
#print("i", i , "j", j "num_pixels", num_pixels, "pixel_index", (i * 256 // num_pixels) + j)
#pixel_index = (i * 256 // num_pixels) + j
#pixels[i+q] = wheel(pixel_index & 255)
pixels.show()
time.sleep(SpeedDelay)
for i in range(0, num_pixels, 3):
# check that pixel index is not greater than number of pixels
if i+q < num_pixels:
# turn every third pixel off
pixels[i+q] = (0,0,0)
### Fix Me - something is broken with the logic. the color doesn't change. and the fire effect seems small
### orginal code; https://www.tweaking4all.com/hardware/arduino/adruino-led-strip-effects/#LEDStripEffectFire
def Fire(Cooling, Sparking, SpeedDelay, LoopCount):
heat = []
for i in range(num_pixels):
heat.append(0)
for l in range(LoopCount):
cooldown = 0
# Step 1. Cool down every cell a little
for i in range(num_pixels):
#print()
#print()
#print("rand interal" + str(((Cooling * 10) / num_pixels) + 2))
cooldown = random.randint(0, int(((Cooling * 10) / num_pixels) + 2))
#print("cooldown " + str(cooldown))
#print("heat " + str(heat[i]))
if cooldown > heat[i]:
heat[i]=0
else:
heat[i]=heat[i]-cooldown
# Step 2. Heat from each cell drifts 'up' and diffuses a little
for k in range(num_pixels - 1, 2, -1):
heat[k] = (heat[k - 1] + heat[k - 2] + heat[k - 2]) / 3
# Step 3. Randomly ignite new 'sparks' near the bottom
if random.randint(0,255) < Sparking:
y = random.randint(0,7)
#heat[y] = heat[y] + random.randint(160,255)
heat[y] = random.randint(160,255)
# Step 4. Convert heat to LED colors
#print(heat)
for j in range(num_pixels):
#print(heat[j] )
setPixelHeatColor(j, int(heat[j]) )
pixels.show()
time.sleep(SpeedDelay)
def setPixelHeatColor (Pixel, temperature):
# Scale 'heat' down from 0-255 to 0-191
t192 = round((temperature/255.0)*191)
# calculate ramp up from
heatramp = t192 & 63 # 0..63 0x3f=63
heatramp <<= 2 # scale up to 0..252
#print("t192=" + str(t192) + " heatramp=" + str(heatramp))
# figure out which third of the spectrum we're in:
if t192 > 0x80: # hottest 128 = 0x80
pixels[Pixel] = (255, 255, int(heatramp))
elif t192 > 0x40: # middle 64 = 0x40
pixels[Pixel] = (255, int(heatramp), 0)
else: # coolest
pixels[Pixel] = (int(heatramp), 0, 0)
def meteorRain(red, green, blue, meteorSize, meteorTrailDecay, meteorRandomDecay, LoopCount, SpeedDelay):
for loop in range(LoopCount):
pixels.fill((0,0,0))
for i in range(num_pixels*2):
# fade brightness all LEDs one step
for j in range(num_pixels):
if (not meteorRandomDecay) or (random.randint(0,10) > 5):
fadeToBlack(j, meteorTrailDecay )
# draw meteor
for j in range(meteorSize):
if ( i-j < num_pixels) and (i-j >= 0):
pixels[i-j] = (red, green, blue)
pixels.show()
time.sleep(SpeedDelay)
def fadeToBlack(ledNo, fadeValue):
#ctypes.c_uint32 oldColor = 0x00000000UL
#ctypes.c_uint8 r = 0
#ctypes.c_uint8 g = 0
#ctypes.c_uint8 b = 0
oldColor = pixels[ledNo]
# r = (oldColor & 0x00ff0000) >> 16
# g = (oldColor & 0x0000ff00) >> 8
# b = (oldColor & 0x000000ff)
#print(oldColor)
# r = oldColor >> 16
# g = (oldColor >> 8) & 0xff
# b = oldColor & 0xff
r = oldColor[0]
g = oldColor[1]
b = oldColor[2]
if (r<=10):
r = 0
else:
r = r - ( r * fadeValue / 256 )
if (g<=10):
g = 0
else:
g = g - ( g * fadeValue / 256 )
if (b<=10):
b = 0
else:
b = b - ( b * fadeValue / 256 )
pixels[ledNo] = ( int(r), int(g), int(b) )
def BouncingBalls(red, green, blue, BallCount, LoopCount):
## setup
Gravity = -9.81
StartHeight = 1
Height = []
for i in range(BallCount):
Height.append(0)
ImpactVelocityStart = math.sqrt( -2 * Gravity * StartHeight )
ImpactVelocity = []
for i in range(BallCount):
ImpactVelocity.append(0)
TimeSinceLastBounce = []
for i in range(BallCount):
TimeSinceLastBounce.append(0)
Position = []
for i in range(BallCount):
Position.append(0)
ClockTimeSinceLastBounce = []
for i in range(BallCount):
ClockTimeSinceLastBounce.append(0)
Dampening = []
for i in range(BallCount):
Dampening.append(0)
for i in range(BallCount):
ClockTimeSinceLastBounce[i] = int(round(time.time() * 1000))
Height[i] = StartHeight
Position[i] = 0
ImpactVelocity[i] = ImpactVelocityStart
TimeSinceLastBounce[i] = 0
Dampening[i] = 0.90 - float(i)/pow(BallCount,2)
## loop
for loop in range(LoopCount):
for i in range(BallCount):
TimeSinceLastBounce[i] = int(round(time.time() * 1000)) - ClockTimeSinceLastBounce[i]
Height[i] = 0.5 * Gravity * pow( TimeSinceLastBounce[i]/1000 , 2.0 ) + ImpactVelocity[i] * TimeSinceLastBounce[i]/1000
if Height[i] < 0:
Height[i] = 0
ImpactVelocity[i] = Dampening[i] * ImpactVelocity[i]
ClockTimeSinceLastBounce[i] = int(round(time.time() * 1000))
if ImpactVelocity[i] < 0.01:
ImpactVelocity[i] = ImpactVelocityStart
Position[i] = round( Height[i] * (num_pixels - 1) / StartHeight)
for i in range(BallCount):
pixels[Position[i]] = (red,green,blue)
pixels.show()
pixels.fill((0, 0, 0))
def BouncingColoredBalls(BallCount, colors, LoopCount):
## setup
Gravity = -9.81
StartHeight = 1
Height = []
for i in range(BallCount):
Height.append(0)
ImpactVelocityStart = math.sqrt( -2 * Gravity * StartHeight )
ImpactVelocity = []
for i in range(BallCount):
ImpactVelocity.append(0)
TimeSinceLastBounce = []
for i in range(BallCount):
TimeSinceLastBounce.append(0)
Position = []
for i in range(BallCount):
Position.append(0)
ClockTimeSinceLastBounce = []
for i in range(BallCount):
ClockTimeSinceLastBounce.append(0)
Dampening = []
for i in range(BallCount):
Dampening.append(0)
for i in range(BallCount):
ClockTimeSinceLastBounce[i] = int(round(time.time() * 1000))
Height[i] = StartHeight
Position[i] = 0
ImpactVelocity[i] = ImpactVelocityStart
TimeSinceLastBounce[i] = 0
Dampening[i] = 0.90 - float(i)/pow(BallCount,2)
## loop
for loop in range(LoopCount):
for i in range(BallCount):
TimeSinceLastBounce[i] = int(round(time.time() * 1000)) - ClockTimeSinceLastBounce[i]
Height[i] = 0.5 * Gravity * pow( TimeSinceLastBounce[i]/1000 , 2.0 ) + ImpactVelocity[i] * TimeSinceLastBounce[i]/1000
if Height[i] < 0:
Height[i] = 0
ImpactVelocity[i] = Dampening[i] * ImpactVelocity[i]
ClockTimeSinceLastBounce[i] = int(round(time.time() * 1000))
if ImpactVelocity[i] < 0.01:
ImpactVelocity[i] = ImpactVelocityStart
Position[i] = round( Height[i] * (num_pixels - 1) / StartHeight)
for i in range(BallCount):
pixels[Position[i]] = (colors[i][0],colors[i][1],colors[i][2])
pixels.show()
pixels.fill((0, 0, 0))
def wheelBrightLevel(pos, bright):
# 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:
r = g = b = 0
elif pos < 85:
r = int(pos * 3)
g = int(255 - pos*3)
b = 0
elif pos < 170:
pos -= 85
r = int(255 - pos*3)
g = 0
b = int(pos*3)
else:
pos -= 170
r = 0
g = int(pos*3)
b = int(255 - pos*3)
# bight level logic
color = brightnessRGB(r, g, b, bright)
r = color[0]
g = color[1]
b = color[2]
return color if ORDER == neopixel.RGB or ORDER == neopixel.GRB else (r, g, b, 0)
def brightnessRGB(red, green, blue, bright):
r = (bright/256.0)*red
g = (bright/256.0)*green
b = (bright/256.0)*blue
return (int(r), int(g), int(b))
def hsv_to_rgb(h, s, v):
if s == 0.0:
v*=255
return (v, v, v)
i = int(h*6.) # XXX assume int() truncates!
f = (h*6.)-i
p,q,t = int(255*(v*(1.-s))), int(255*(v*(1.-s*f))), int(255*(v*(1.-s*(1.-f))))
v*=255
i%=6
if i == 0:
return (v, t, p)
if i == 1:
return (q, v, p)
if i == 2:
return (p, v, t)
if i == 3:
return (p, q, v)
if i == 4:
return (t, p, v)
if i == 5:
return (v, p, q)
def random_burst(delayStart, delayEnd , LoopCount):
thisbright = 255
for loop in range(LoopCount):
randomIndex= random.randint(0, num_pixels-1)
randomhue = random.randint(0, 255)
randombright = random.randint(10, thisbright)
# CHSV(rndhue, thissat, rndbright)
#print(str(randomIndex) + " " + str(rndhue) + " " + str(rndbright))
pixels[randomIndex] = wheelBrightLevel(randomhue, randombright)
pixels.show()
delay = random.randint(delayStart*1000, delayEnd*1000)/1000
time.sleep(delay)
def rgbPropellerCustom(hue1, LoopCount):
hue1 = 0
index= 0
hue2 = (hue1 + 80) % 255
hue3 = (hue1 + 160) % 255
N3 = int(num_pixels/3)
N6 = int(num_pixels/6)
N12 = int(num_pixels/12)
for loop in range(LoopCount):
index = index + 1
cSwap = hue1
hue1 = hue2
hue2 = hue3
hue3 = cSwap
for i in range(N3):
j0 = (index + i + num_pixels - N12) % num_pixels
j1 = (j0+N3) % num_pixels
j2 = (j1+N3) % num_pixels
pixels[j0] = wheel(hue1)
pixels[j1] = wheel(hue2)
pixels[j2] = wheel(hue3)
pixels.show()
def rainbow(delay, step, cycles):
for j in range(255 * cycles):
for i in range(num_pixels):
# " // " this divides and returns the integer value of the quotient.
# It dumps the digits after the decimal
pixel_index = (step *i * 256 // num_pixels) + j
pixels[i] = wheel(pixel_index & 255)
pixels.show()
time.sleep(delay)
def rainbow_loop(delay, step, cycles):
index = 0
thishue = 0
for loop in range(cycles):
index = index + 1
thishue = thishue + step
if index >= num_pixels:
index = 0
if thishue > 255:
thishue = 0
pixels[index] = wheel(thishue)
pixels.show()
time.sleep(delay)
def rainbow_fade(delay, cycles):
thishue = 0
for loop in range(cycles):
thishue = thishue + 1
if thishue > 255:
thishue = 0
# an other option would be to
pixels.fill(wheel(thishue))
pixels.show()
time.sleep(delay)
# for i in range(num_pixels):
# print(wheel(thishue))
# pixels[i] = wheel(thishue)
# pixels.show()
# time.sleep(delay)
def matrix(random_percent, delay, cycles):
for loop in range(cycles):
rand = random.randint(0, 100)
# set first pixel
if rand <= random_percent:
pixels[0] = wheelBrightLevel(random.randint(0, 255), 255)
else:
pixels[0] = (0,0,0)
# show pixels
pixels.show()
time.sleep(delay)
# rotate pixel positon
for i in range(num_pixels - 1, 0, -1):
pixels[i] = pixels[i-1]
# there is an issue with first 2 pixels are same color
#pixels[0] = (0,0,0)
#pixels.show()
#time.sleep(delay)
def random_march(delay, cycles):
for loop in range(cycles):
for idex in range(num_pixels-1):
### previous logic that was not used...
#if idex > 0: #if not last pixel
# r = idex - 1
#else: # if last pixel
# r = num_pixels - 1
# shift pixel value to previous pixel (pixel1 = value of pixel2,... and so on)
pixels[idex] = pixels[idex+1]
# change color of the last pixel
pixels[num_pixels-1] = wheelBrightLevel(random.randint(0, 255), 255)
# show pixel values
pixels.show()
time.sleep(delay)
def twinkle2(delay, cycles ):
for loop in range(cycles):
huebase = 0
#slowly rotate huebase
if (random.randint(0, 4) == 0): #randomly, if 0 (0-3)
huebase = huebase -1
for whichPixel in range(num_pixels):
hue = random.randint(0, 32) + huebase
#saturation = 255; #richest color
brightness = random.randint(0, 255)
pixels[whichPixel] = wheelBrightLevel(hue, brightness)
# show pixel values
pixels.show()
time.sleep(delay)
def random_levels( NUM_LEVELS, delay, cycles ):
for loop in range(cycles):
level = random.randint(0, NUM_LEVELS)
if (NUM_LEVELS == level):
level = 0
light_level_random(level, 1)
pixels.show()
time.sleep(delay)
def light_level_random( level, clearall ):
levels = levelobj
if (clearall):
pixels.fill((0, 0, 0)) # clear all
pixels.show()
startPxl = 0
if (level == 0):
startPxl = 0
else:
startPxl = levels[level-1]
for i in range(startPxl, levels[level]):
pixels[i] = wheelBrightLevel(random.randint(0, 255), random.randint(50, 255))
def drain(level, delay):
interrupt = False
for pancakeLevel in range(level):
# only needed if you ouput to a small display
# updateControlVars()
if (interrupt):
return
for level in range(pancakeLevel, -1, -1):
# only needed if you ouput to a small display
# updateControlVars()
if (interrupt) :
return
clear_level(level)
if (level >= 1) :
light_level_random(level-1, 0)
# show pixel values
pixels.show()
time.sleep(delay)
def pancake(NUM_LEVELS, delay):
interrupt = False
for pancakeLevel in range(NUM_LEVELS):
# only needed if you ouput to a small display
# updateControlVars()
if (interrupt):
return
for level in range(NUM_LEVELS-1, pancakeLevel-1, -1):
# only needed if you ouput to a small display
# updateControlVars()
if (interrupt):
return
if (level < NUM_LEVELS-1):
clear_level(level+1)
light_level_random(level, 0)
# show pixel values
pixels.show()
time.sleep(delay)
def clear_level( level):
#levels = (58, 108, 149, 187, 224, 264, 292, 309, 321, 327, 336, 348) #this only works if you have 350 lights
#levels = (11, 20, 27, 34, 39, 43, 47, 50) #this works for 50 lights
#levels = (20, 34, 43, 50) #this works for 50 lights
levels = levelobj
startPxl = 0
if (level == 0):
startPxl = 0
else:
startPxl = levels[level-1]
for i in range(startPxl, levels[level]):
pixels[i] = (0,0,0) #CRGB::Black;
def FireCustom(CoolingRangeStart, CoolingRangeEnd, Sparking, SparkingRangeStart, SparkingRangeEnd, SpeedDelay, cycles):
# CoolingRangeStart: (0-255) cooling random value, start range
# CoolingRangeEnd: (0-255) cooling random value, end range
# Sparking: (0-100) chance of sparkes are added randomly controld througn a % value, 100= 100% and 0 = 0%
# SparkingRangeStart: (0- number of pixels) spark position random value, start range
# SparkingRangeEnd: (0- number of pixels) spark position random value, end range
# SpeedDelay: (0-...) slow down the effect by injecting a delay in Sec. 0=no delay, .05=50msec, 2=2sec
#
# FireCustom: makes the strand of pixels show an effect that looks flame. This effect also
# adds more detail control of "sparks" that inject "heat" to the effect, thus changing color
# and flame length. The spark position can also be controled via start and end range.
# Color options include red, green, and blue.
#
# Improvements:
# - add choice for 3 diffrent fire effect logic.
# - add choice to control heat values "random.randint(160,255)"
# - add choice for flame color options include red, green, and blue.
# intialize heat array, same size of as the strip of pixels
heat = []
for i in range(num_pixels):
heat.append(0)
#
for loop in range(cycles):
cooldown = 0
# Step 1. Cool down every cell a little
for i in range(num_pixels):
cooldown = random.randint(CoolingRangeStart, CoolingRangeEnd)
if cooldown > heat[i]:
heat[i]=0
else:
heat[i]=heat[i]-cooldown
# Step 2. Heat from each cell drifts 'up' and diffuses a little
for k in range(num_pixels - 1, 2, -1):
heat[k] = (heat[k - 1] + heat[k - 2] + heat[k - 2]) / 3
# Step 3. Randomly ignite new 'sparks' near the bottom
if random.randint(0,100) < Sparking:
# randomly pick the position of the spark
y = random.randint(SparkingRangeStart,SparkingRangeEnd)
# different fire effects
heat[y] = random.randint(160,255)
# Step 4. Convert heat to LED colors
for j in range(num_pixels):
t192 = round((int(heat[j])/255.0)*191)
# calculate ramp up from
heatramp = t192 & 63 # 0..63 0x3f=63
heatramp <<= 2 # scale up to 0..252
# figure out which third of the spectrum we're in:
if t192 > 0x80: # hottest 128 = 0x80
pixels[j] = (255, 255, int(heatramp))
elif t192 > 0x40: # middle 64 = 0x40
pixels[j] = (255, int(heatramp), 0)
else: # coolest
pixels[j] = (int(heatramp), 0, 0)
pixels.show()
time.sleep(SpeedDelay)
def candycane_custom(c1, c2, thisbright, delay, cycles):
N6 = int(num_pixels/6)
N12 = int(num_pixels/12)
for loop in range(cycles):
cSwap = c1
c1 = c2
c2 = cSwap
for i in range(N6):
j0 = int(( i + num_pixels - N12) % num_pixels)
j1 = int((j0+N6) % num_pixels)
j2 = int((j1+N6) % num_pixels)
j3 = int((j2+N6) % num_pixels)
j4 = int((j3+N6) % num_pixels)
j5 = int((j4+N6) % num_pixels)
pixels[j0] = brightnessRGB(c1[0], c1[1], c1[2], int(thisbright*.75))
pixels[j1] = brightnessRGB(c2[0], c2[1], c2[2], thisbright)
pixels[j2] = brightnessRGB(c1[0], c1[1], c1[2], int(thisbright*.75))
pixels[j3] = brightnessRGB(c2[0], c2[1], c2[2], thisbright)
pixels[j4] = brightnessRGB(c1[0], c1[1], c1[2], int(thisbright*.75))
pixels[j5] = brightnessRGB(c2[0], c2[1], c2[2], thisbright)
# show pixel values
pixels.show()
time.sleep(delay)
def RunningLightsPreExisting(WaveDelay, cycles):
# gather existing colors in strip of pixel
stripExisting = []
for i in range(num_pixels):
stripExisting.append(pixels[i])
for loop in range(cycles):
# change the color level on the existing colors
for i in range(num_pixels):
# calculate level
level = math.sin(i + loop) * 127 + 128
# change color level on for red, green, and blue
r = (level/255)*stripExisting[i][0]
g = (level/255)*stripExisting[i][1]
b = (level/255)*stripExisting[i][2]
pixels[i] = (int(r), int(g),int(b))
pixels.show()
time.sleep(WaveDelay)
def SnowSparkleExisting(Count, SparkleDelay, SpeedDelay):
# gather existing colors in strip of pixel
stripExisting = []
for i in range(num_pixels):
stripExisting.append(pixels[i])
for i in range(Count):
index = random.randint(0,num_pixels-1)
pixels[index] = (255,255,255)
pixels.show()
time.sleep(SparkleDelay)
pixels[index] = stripExisting[index]
pixels.show()
time.sleep(SpeedDelay)
def HalloweenEyesExisting(red, green, blue, EyeWidth, EyeSpace, Fade, Steps, FadeDelay, EndPause):
# gather existing colors in strip of pixel
stripExisting = []
for i in range(num_pixels):
stripExisting.append(pixels[i])
# define eye1 and eye2 location
StartPoint = random.randint( 0, num_pixels - (2*EyeWidth) - EyeSpace )
Start2ndEye = StartPoint + EyeWidth + EyeSpace
# set color of eyes for given location
for i in range(EyeWidth):
pixels[StartPoint + i] = (red, green, blue)
pixels[Start2ndEye + i] = (red, green, blue)
pixels.show()
# if user wants fading, then fadeout pixel color
if Fade == True:
for j in range(Steps, -1, -1):
r = (j/Steps)*red
g = (j/Steps)*green
b = (j/Steps)*blue
for i in range(EyeWidth):
pixels[StartPoint + i] = ((int(r), int(g), int(b)))
pixels[Start2ndEye + i] = ((int(r), int(g), int(b)))
pixels.show()
time.sleep(FadeDelay)
# Set all pixels to back
# set color of eyes for given location
for i in range(EyeWidth):
pixels[StartPoint + i] = stripExisting[StartPoint + i]
pixels[Start2ndEye + i] = stripExisting[Start2ndEye + i]
pixels.show()
# pause before changing eye location
time.sleep(EndPause)
# HeartBeatExisiting - mimics a heart beat pulse, with 2 beats at different speeds. The existing colors
# on the pixel strip are preserved, rather than a single color.
#
# HeartBeatExisiting(beat1Step, beat1FadeInDelay, beat1FadeOutDelay, beat1Delay,
# beat2Step, beat2FadeInDelay, beat2FadeOutDelay, beat1Delay, cycles):
# HeartBeatExisiting(3, .005, .003, 0.001, 6, .002, .003, 0.05, 10)
#
# beat1Step: (1-255) first beat color transition step
# beat1FadeInDelay: (0-2147483647) first beat fade in trasition speed, in seconds
# beat1FadeOutDelay: (0-2147483647) first beat fade out trasition speed, in seconds
# beat1Delay: (0-2147483647) beat time delay bewteen frist and sencond beat, in seconds
# beat2Step: (1-255) second beat color transition step
# beat2FadeInDelay: (0-2147483647) second beat fade in trasition speed, in seconds
# beat2FadeOutDelay: (0-2147483647) second beat fade out trasition speed, in seconds
# beat1Delay: (0-2147483647) beat time delay bewteen sencond and first beat, in seconds
# cycles: (1-2147483647) number of times this effect will run
def HeartBeatExisiting(beat1Step, beat1FadeInDelay, beat1FadeOutDelay, beat1Delay, beat2Step, beat2FadeInDelay, beat2FadeOutDelay, beat2Delay, cycles):
#HeartBeatExisiting(beat1Step, beat1FadeInDelay, beat1FadeOutDelay, beat1Delay,
# beat2Step, beat2FadeInDelay, beat2FadeOutDelay, beat2Delay, cycles):
# gather existing colors in strip of pixel
stripExisting = []
for i in range(num_pixels):
stripExisting.append(pixels[i])
for loop in range(cycles):