jepler/Adafruit_Learning_System_Guides
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

pylint runs clean

Browse source
This commit is contained in:
Mikey Sklar 2018-08-16 18:43:09 -06:00
parent cea9f4bf37
commit 35b350fbb8
2 changed files with 39 additions and 37 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

BIN
3D_Printed_LED_Fire_Horns/.3D_Printed_LED_Fire_Horns.ino.swp
View file

Binary file not shown.

52
3D_Printed_LED_Fire_Horns/3D_Printed_LED_Fire_Horns.py
View file

@ -13,17 +13,16 @@ try:
except ImportError:
import random
# /\ -> Fire-like effect is the sum of multiple triangle
# /\ -> Fire-like effect is the sum_total of multiple triangle
# ____/ \____ waves in motion, with a 'warm' color map applied.
n_horns = 1 # number of horns
led_pin = board.D0 # which pin your pixels are connected to
n_leds = 30 # number of LEDs per horn
frames_per_second = 50 # animation frames per second
brightness = 0 # current wave height
fade = 0 # Decreases brightness as wave moves
pixels = neopixel.NeoPixel(led_pin, n_leds, brightness=1, auto_write=False)
offset = 0
#fade = 235 # decreases brightness as wave moves
# Coordinate space for waves is 16x the pixel spacing,
# allowing fixed-point math to be used instead of floats.
@ -67,13 +66,13 @@ gamma = [
]
def random_wave(h, w):
wave[h][w][upper] = -1 # Always start just below head of strip
wave[h][w][lower] = -16 * (3 + random.randint(0,4)) # Lower end starts ~3-7 pixels back
wave[h][w][mid] = (wave[h][w][lower]+ wave[h][w][upper]) / 2
wave[h][w][vlower] = 3 + random.randint(0,4) # Lower end moves at ~1/8 to 1/pixels
wave[h][w][vupper] = wave[h][w][vlower]+ random.randint(0,4) # Upper end moves a bit faster
wave[h][w][intensity] = 300 + random.randint(0,600)
def random_wave(he, wi):
wave[he][wi][upper] = -1 # Always start below head of strip
wave[he][wi][lower] = -16 * (3 + random.randint(0,4)) # Lower end starts ~3-7 pixels back
wave[he][wi][mid] = (wave[he][wi][lower]+ wave[he][wi][upper]) / 2
wave[he][wi][vlower] = 3 + random.randint(0,4) # Lower end moves at ~1/8 to 1/pixels
wave[he][wi][vupper] = wave[he][wi][vlower]+ random.randint(0,4) # Upper end moves a bit faster
wave[he][wi][intensity] = 300 + random.randint(0,600)
def setup():
global fade
@ -85,9 +84,9 @@ def setup():
random.seed(pin.value)
pin.deinit()
for h in range(n_horns):
for w in range(n_waves):
random_wave(h, w)
for he in range(n_horns):
for wi in range(n_waves):
random_wave(he, wi)
fade = 233 + n_leds / 2
@ -100,35 +99,38 @@ while True:
h = w = i = r = g = b = 0
x = 0
sum = 0
for h in range(n_horns): # For each horn...
x = 7
sum = 0
sum_total = 0
for i in range(n_leds): # For each LED along horn...
x += 16
for w in range(n_waves): # For each wave of horn...
if (x < wave[h][w][lower]) or (x > wave[h][w][upper]):
continue # Out of range
if x <= wave[h][w][mid]: # Lower half of wave (ramping up peak brightness)
sum += wave[h][w][intensity] * (x - wave[h][w][lower]) / (wave[h][w][mid] - wave[h][w][lower])
sum_top = wave[h][w][intensity] * (x - wave[h][w][lower])
sum_bottom = (wave[h][w][mid] - wave[h][w][lower])
sum_total += sum_top / sum_bottom
else: # Upper half of wave (ramping down from peak)
sum += wave[h][w][intensity] * (wave[h][w][upper] - x) / (wave[h][w][upper] - wave[h][w][mid])
sum_top = wave[h][w][intensity] * (wave[h][w][upper] - x)
sum_bottom = (wave[h][w][upper] - wave[h][w][mid])
sum_total += sum_top / sum_bottom
sum = int(sum) # convert from decimal to whole number
sum_total = int(sum_total) # convert from decimal to whole number
# Now the magnitude (sum) is remapped to color for the LEDs.
# Now the magnitude (sum_total) is remapped to color for the LEDs.
# A blackbody palette is used - fades white-yellow-red-black.
if sum < 255: # 0-254 = black to red-1
r = gamma[sum]
if sum_total < 255: # 0-254 = black to red-1
r = gamma[sum_total]
g = b = 0
elif sum < 510: # 255-509 = red to yellow-1
elif sum_total < 510: # 255-509 = red to yellow-1
r = 255
g = gamma[sum - 255]
g = gamma[sum_total - 255]
b = 0
elif sum < 765: # 510-764 = yellow to white-1
elif sum_total < 765: # 510-764 = yellow to white-1
r = g = 255
b = gamma[sum - 510]
b = gamma[sum_total - 510]
else: # 765+ = white
r = g = b = 255
pixels[i] = (r, g, b)