Audi RS Q e-tron (42160) with the Xbox Controller + lights

[vasilegh]

Hello,

I managed to program the hub with the demo on pybricks. All works great, but if i try to add lights to PORT.C (since is unused) the controller connects for a second then halts. Any idea how to do this?
This is the program adapted:

from pybricks.iodevices import XboxController
from pybricks.parameters import Direction, Port, Button
from pybricks.pupdevices import Motor, Light
from pybricks.robotics import Car
from pybricks.tools import wait

# Set up all devices
steering = Motor(Port.D, Direction.CLOCKWISE)
front = Motor(Port.B, Direction.CLOCKWISE)
rear = Motor(Port.A, Direction.CLOCKWISE)
car = Car(steering, [front, rear])
xbox = XboxController()
light = Light(Port.C)

# Main program
while True:
    car.steer(xbox.joystick_left()[0])
    car.drive_power(xbox.triggers()[1] - xbox.triggers()[0])

    if xbox.button(Button.A):
        if light.brightness() == 0: 
            light.on(100)
        else:
            light.off()
    
    wait(50)

[BertLindeman]

Hello,

Did you look at the messages on the bottom of the code.pybricks.com screen?
That shows most of the time what is happening.
Maybe you made the source-part so large that the messages can not be seen.

Maybe

     if xbox.button(Button.A):

should be

    if xbox.button.pressed(Button.A):

Bert

[vasilegh]

I only have this at the bottom:
The hub may disconnect from the computer for better connectivity with the controller.

Is the same with the modification suggested, controller goes off after 1sec.

[BertLindeman]

Ah, so you use a Technic hub and can not see the messages because that hub needs to disconnect from the PC due to its limitations.

The controller disconnects as soon as the xbox gets connected.

There are more problems with your code.
The light module does not have a method bricghtness

It is not so easy to debug a program on the technic hub while using the xbox controller.

Best to do is make your program simpler and while debugging keep the xbox things commented out.

Maybe like this:
Simplified to test:

from pybricks.iodevices import XboxController
from pybricks.parameters import Direction, Port, Button
from pybricks.pupdevices import Motor, Light
from pybricks.robotics import Car
from pybricks.tools import wait

# xbox = XboxController()
light = Light(Port.C)

# Main program
while True:
    # if xbox.button.pressed(Button.A):
    if True: 
        if light.brightness() == 0: 
            light.on(100)
        else:
            light.off()
    
    wait(50)

My result here:
AttributeError: 'Light' object has no attribute 'brightness'

Bert

[vasilegh]

Simplified, with this code i get them to light up at start.
Xbox controller stays connected now, the only thing missing is a way to turn them off/on via a button.

from pybricks.iodevices import XboxController
from pybricks.parameters import Direction, Port, Button
from pybricks.pupdevices import Light
from pybricks.pupdevices import Motor
from pybricks.robotics import Car
from pybricks.tools import wait


# Initialize the light.
light = Light(Port.C)

# Set up all devices
steering = Motor(Port.D, Direction.CLOCKWISE)
front = Motor(Port.B, Direction.CLOCKWISE)
rear = Motor(Port.A, Direction.CLOCKWISE)
car = Car(steering, [front, rear])
xbox = XboxController()

# Main program
while True:
    car.steer(xbox.joystick_left()[0])
    car.drive_power(xbox.triggers()[1] - xbox.triggers()[0])
    light.on(100)
    wait(50)

[vasilegh]

Yes, it was used, if i put normal program, it works. Pairing as in the manual.

[BertLindeman]

Could you show your current program that shows the problem?
Please put your source between ```python and ``` with 3 backticks so the source is wel shown.

[vasilegh]

This is what i have now, and the lights are on when xbox controller is paired:

from pybricks.iodevices import XboxController
from pybricks.parameters import Direction, Port, Button
from pybricks.pupdevices import Light
from pybricks.pupdevices import Motor
from pybricks.robotics import Car
from pybricks.tools import wait


# Initialize the light.
light = Light(Port.C)

# Set up all devices
steering = Motor(Port.D, Direction.CLOCKWISE)
front = Motor(Port.B, Direction.CLOCKWISE)
rear = Motor(Port.A, Direction.CLOCKWISE)
car = Car(steering, [front, rear])
xbox = XboxController()

# Main program
while True:
    car.steer(xbox.joystick_left()[0])
    car.drive_power(xbox.triggers()[1] - xbox.triggers()[0])
    light.on(100)
    wait(50)

[BertLindeman]

So: progress!

You might add (more or less copied from you original source I had a typo: xbox.button should be xbox.buttons)

        if Button.A in xbox.buttons.pressed():
            light.on(100)
        if Button.Y in xbox.buttons.pressed():
            light.off()  )

Keep the indentation in mind.

[vasilegh]

perfect now, thank you., my little one is very happy now.

[BertLindeman]

my little one is very happy now.

Me too.

Thanks for the report back.

Bert