# PWM
{% tabs %}
{% tab title="1" %}
{% endtab %}
{% tab title="2" %}
{% endtab %}
{% tab title="3" %}
{% endtab %}
{% tab title="4" %}
{% endtab %}
{% tab title="5" %}
{% endtab %}
{% tab title="6" %}
{% endtab %}
{% tab title="7" %}
{% endtab %}
{% endtabs %}
## Code
```python
"""
PWM Demo Code
Breadstick Innovations
April 26, 2024
https://learn.breadstick.ca/breadstick/breadsticks/raspberry-breadstick/code-examples/pwm
duty_cycle is a 16-bit integer
2^16 = 65536 values
0 is one of those values,
so the range is 0-65535.
range(start,stop,step)
range(0,10,1) = 0,1,2,3,4,5,6,7,8,9
range(10,0,-1) = 10,9,8,7,6,5,4,3,2,1
"""
from board import *
from pwmio import PWMOut
from time import sleep
led_5 = PWMOut(D5, frequency=500, duty_cycle=0)
while True:
for i in range(0,65535,100):
led_5.duty_cycle = i
sleep(0.001)
for i in range(65535,0,-100):
led_5.duty_cycle = i
sleep(0.001)
```