SunFounder ESP32 - Page 433

SunFounder ESP32 Starter Kit
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potentiometer.atten(ADC.ATTN_11DB)
# Initialize the NeoPixel LED strip
np = neopixel.NeoPixel(Pin(PIN_NUM), NUM_LEDS)
# Function to convert HSL color space to RGB color space
def hsl_to_rgb(h, s, l):
# Helper function to convert hue to RGB
def hue_to_rgb(p, q, t):
if t < 0:
t += 1
if t > 1:
t -= 1
if t < 1/6:
return p + (q - p) * 6 * t
if t < 1/2:
return q
if t < 2/3:
return p + (q - p) * (2/3 - t) * 6
return p
if s == 0:
r = g = b = l
else:
q = l * (1 + s) if l < 0.5 else l + s - l * s
p = 2 * l - q
r = hue_to_rgb(p, q, h + 1/3)
g = hue_to_rgb(p, q, h)
b = hue_to_rgb(p, q, h - 1/3)
return (int(r * 255), int(g * 255), int(b * 255))
# Function to set the color of all LEDs in the strip
def set_color(np, color):
for i in range(NUM_LEDS):
np[i] = color
np.write()
# Main loop
while True:
# Read the potentiometer value and normalize it to the range [0, 1]
pot_value = potentiometer.read() / 4095.0
hue = pot_value # Set hue value based on the potentiometer's position
saturation = 1 # Set saturation to 1 (fully saturated)
lightness = 0.5 # Set lightness to 0.5 (halfway between black and white)
# Convert the HSL color to RGB
current_color = hsl_to_rgb(hue, saturation, lightness)
# Set the LED strip color based on the converted RGB value
set_color(np, current_color)
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3.37. 6.5 Color Gradient 427