import machine
import time, math
led = machine.PWM(machine.Pin(2), freq=1000)
def pulse(l, t):
for i in range(20):
l.duty(int(math.sin(i / 10 * math.pi) * 500 + 500))
time.sleep_ms(t)
pulse(led, 10)
import machine
import time, math
led = machine.PWM(machine.Pin(2), freq=1000)
def pulse(l, t):
for i in range(20):
l.duty(int(math.sin(i / 10 * math.pi) * 500 + 500))
time.sleep_ms(t)
pulse(led, 10)