Using object oriented programming to write better GUIs

1 class ButtonsWindow(object):
2     def __init__(self):
3         self.setup_buttons()
4 
5     def run(self):
6         self.window.mainloop()

…

The code above contains an object oriented approach to GUI programming

but it also contains a few errors and unimplemented functionality

fix the program so that whenever a button is pressed the corrseponding text is print()ed on the terminal

 1 class PrintingButton(object):
 2     def __init__(self, window, label):
 3         self.label= label
 4         self.button= tk.Button(
 5             window, text=label,
 6             command= self.on_pressed
 7         )
 8         self.button.pack()
 9 
10     def on_pressed(self):
11         print(self.label)

…

Download and flash the atuino Arduino sketch introduced in tutorial 16

Copy the content of the atuino python code into a file called atuino.py

Open a terminal, cd into the directory where you saved the atuino.py file and type

python (on Windows) / python3 (everywhere else) to start an interactive python session

1 >>> import atuino
2 >>> arduino= atuino.Arduino('/dev/ttyACM0')
3 >>> led= atuino.OutputPin(arduino, 13)
4 >>> led.turn_on()
5 >>> led.turn_off()

Enter the python statements above into the interactive session, remember to replace /dev/ttyACM0 with the actual name of your serial port

The led.turn_on/led.turn_off statements should turn the on-board LED on/off

Hint: You can use the Arduino IDE to find the name of your serial port

This program should provide a drop-down menu to select a serial port but some parts are missing, fix them

Once the program is fixed and you select the correct port, the LEDs on your Arduino should flash

This program contains a working drop-down list and displays buttons to control the LEDs attached to the Arduino

The LED controlling part does not work, find out why and fix the problem

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