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Caldeiro
Asked: 2022-08-20 16:24:54 +0800 CST 2022-08-20 16:24:54 +0800 CST

Why does the connection to the engine fail with gpiozero?

  • 772

In the following piece of code I make a connection to my raspberry from pycharm. ledon makes the connection correctly and allows me to turn the led on/off by running the program from windows.

from tkinter import *
from tkinter import ttk


from gpiozero import LED, Motor
from gpiozero.pins.pigpio import PiGPIOFactory


factory = PiGPIOFactory(host='192.168.31.150')
ledon = LED(17, pin_factory=factory)
ledon.on()
motor1 = Motor(23, 24, pwm=True, pin_factory=factory)
motor1.forward()

In the case of motor1 it gives the following error I don't quite understand what is missing, I have tried to install the RPi.GPIO package in pycharm but it gives an error there is no way

C:\Users\calde\AppData\Local\Programs\Python\Python39\lib\site-packages\gpiozero\devices.py:288: PinFactoryFallback: Falling back from rpigpio: No module named 'RPi'
  warnings.warn(
C:\Users\calde\AppData\Local\Programs\Python\Python39\lib\site-packages\gpiozero\devices.py:288: PinFactoryFallback: Falling back from lgpio: No module named 'lgpio'
  warnings.warn(
C:\Users\calde\AppData\Local\Programs\Python\Python39\lib\site-packages\gpiozero\devices.py:288: PinFactoryFallback: Falling back from rpio: No module named 'RPIO'
  warnings.warn(
C:\Users\calde\AppData\Local\Programs\Python\Python39\lib\site-packages\gpiozero\devices.py:288: PinFactoryFallback: Falling back from pigpio: failed to connect to localhost:8888
  warnings.warn(
C:\Users\calde\AppData\Local\Programs\Python\Python39\lib\site-packages\gpiozero\devices.py:288: PinFactoryFallback: Falling back from native: [Errno 2] No such file or directory: '/proc/cpuinfo'
  warnings.warn(
Traceback (most recent call last):
  File "P:\PROYECTOS\RCC\main.py", line 29, in <module>
    motor1 = Motor(23, 24, pwm=True, pin_factory=factory)
  File "C:\Users\calde\AppData\Local\Programs\Python\Python39\lib\site-packages\gpiozero\devices.py", line 108, in __call__
    self = super(GPIOMeta, cls).__call__(*args, **kwargs)
  File "C:\Users\calde\AppData\Local\Programs\Python\Python39\lib\site-packages\gpiozero\output_devices.py", line 1223, in __init__
    super(Motor, self).__init__(_order=devices.keys(), **devices)
  File "C:\Users\calde\AppData\Local\Programs\Python\Python39\lib\site-packages\gpiozero\mixins.py", line 85, in __init__
    super(SourceMixin, self).__init__(*args, **kwargs)
  File "C:\Users\calde\AppData\Local\Programs\Python\Python39\lib\site-packages\gpiozero\devices.py", line 432, in __init__
    super(CompositeDevice, self).__init__(pin_factory=pin_factory)
  File "C:\Users\calde\AppData\Local\Programs\Python\Python39\lib\site-packages\gpiozero\devices.py", line 250, in __init__
    Device.pin_factory = Device._default_pin_factory()
  File "C:\Users\calde\AppData\Local\Programs\Python\Python39\lib\site-packages\gpiozero\devices.py", line 291, in _default_pin_factory
    raise BadPinFactory('Unable to load any default pin factory!')
gpiozero.exc.BadPinFactory: Unable to load any default pin factory!

The error when installing the module: enter image description here

python

1 Answers

  1. Best Answer

    In the end I solved it this way:

    import os
from time import sleep
os.environ["PIGPIO_ADDR"] = "192.168.31.150"
os.environ["GPIOZERO_PIN_FACTORY"] = "pigpio"

ledon = LED(17)
motor1 = Motor(23,24)

    You have to set the system variables that refer to pigpio because otherwise it will take localhost by default. And what we want is to connect to the ip of the raspberry pi from a remote pc, running the program on the remote, not on the raspberry.

    • 0