Bright and dim

pwm() can be any number from 0 to 100. pwm(100) is full power, pwm(50) is half, pwm(10) is a tiny glow.

setup:

loop:
    o1 = pwm(100)
    wait(1000)
    o1 = pwm(50)
    wait(1000)
    o1 = pwm(10)
    wait(1000)

A smooth fade

output_increment_till(o1, 0, 100, 5, 50) climbs from 0 to 100 in steps of 5, waiting 50 ms between steps. output_decrement_till goes back down.

setup:

loop:
    output_increment_till(o1, 0, 100, 5, 50)
    output_decrement_till(o1, 100, 0, 5, 50)