Pizero2.vent

Boot

# /boot/firmware/config.txt

dtoverlay=pwm-2chan

pwm.py

# apt install pigpio

#
# KEMO M240
#  PWM Spannung: 3 V bis 24 V
#  PWM Frequenz: 100 Hz bis 10 kHz
#
# Raspberry Pi Zero
#  PWM0 Pin 18 xor 12, 3,3 V 1 kHz
#  PWM1 Pin 13 xor 19, 3,3 V 1 kHz
#

import pigpio
import time
import random

PWM_GPIO = 18
PWM_FREQUENCY = 1000

random.seed()
pi = pigpio.pi()

#
# Start Motor Full Speed for 4 Seconds
#
ret_code = pi.hardware_PWM(PWM_GPIO, PWM_FREQUENCY, 1000000)
print(ret_code)
time.sleep(4)

# print(pi.get_PWM_range(PWM_GPIO))
# print(pi.get_PWM_real_range(PWM_GPIO)) 

while True:

 #pi.set_PWM_dutycycle(PWM_GPIO, 0)
 percent = random.randint(0,100)
 print("set motor to ", percent, " %")
 pi.hardware_PWM(PWM_GPIO, PWM_FREQUENCY, percent * 10000)
 time.sleep(15)