pimoroni-pico/micropython/examples/breakout_potentiometer/demo.py

51 wiersze
1.1 KiB
Python

import time
from pimoroni_i2c import PimoroniI2C
from breakout_potentiometer import BreakoutPotentiometer
PINS_BREAKOUT_GARDEN = {"sda": 4, "scl": 5}
PINS_PICO_EXPLORER = {"sda": 20, "scl": 21}
i2c = PimoroniI2C(**PINS_BREAKOUT_GARDEN)
pot = BreakoutPotentiometer(i2c)
pot.set_brightness(1.0)
# pot.set_direction(BreakoutPotentiometer.DIRECTION_CCW) # Uncomment this to flip the direction
# From CPython Lib/colorsys.py
def hsv_to_rgb(h, s, v):
if s == 0.0:
return v, v, v
i = int(h * 6.0)
f = (h * 6.0) - i
p = v * (1.0 - s)
q = v * (1.0 - s * f)
t = v * (1.0 - s * (1.0 - f))
i = 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
val = 0
while True:
val = pot.read()
h = val * 240.0 # Colour range from red to blue
r, g, b = [int(255 * c) for c in hsv_to_rgb(h / 360.0, 1.0, 1.0)] # rainbow magic
print("Percent: ", int(val * 100), "%", sep="")
pot.set_led(r, g, b)
time.sleep(0.02)