Enhancing my Python Serial Monitoring Program by Adding a Screen

Remember my post "Create a Wifi Captive Portal using a NodeMCU"? It has a python program that retrieves the user input from the wifi captive portal over serial port. This tiny program does not have a screen so I need to enhance it a little bit just to demo the threading features of python which I also mentioned in this post: PyQt6 Progress Bar Enhancement. The program is still very simple and very straightforward. The tricky part is the threading, it is what makes this program feasible. I also added 2 buttons(Start and Stop) and the function is quite obvious. 

Here is the screenshot of the screen:

Here is the code:

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import sys from PyQt6 import QtGui import serial #import asyncio import time from PyQt6.QtWidgets import QTextEdit, QApplication, QMainWindow, QPushButton, QToolTip, QMessageBox, QLabel from PyQt6.QtCore import QTimer, QThread, pyqtSignal, Qt import multiprocessing as mp arduinodata = '' breaker = 0 class Window2(QMainWindow): def __init__(self): super().__init__() self.setWindowTitle("Serial MOnitoring") self.top = 200 self.left = 200 self.width = 300 self.height = 350 self.setGeometry(self.top, self.left, self.width, self.height) lbl1a = QLabel('Credentials', self) lbl1a.setGeometry(5, 10, 290, 35) lbl1a.setStyleSheet('QLabel {background-color: #0E95A6; color: #d4d4d4;}') lbl1a.setAlignment(Qt.AlignmentFlag.AlignCenter) self.le = QTextEdit(self) #self.le.setEnabled(False) self.le.setGeometry(5, 50, 290, 250) self.pushButton = QPushButton("Start", self) self.pushButton.move(40, 313) self.stopButton = QPushButton("Stop", self) self.stopButton.move(160, 313) self.stopButton.setEnabled(False) self.stopButton.clicked.connect(self.stop_bot) timer = QTimer(self) timer.timeout.connect(self.showtext) timer.start(1000) self.thread() self.pushButton.clicked.connect(self.window3) self.show() def showtext(self): global arduinodata if arduinodata != '': print(arduinodata) self.le.append(arduinodata) arduinodata = '' def stop_bot(self): global breaker self.pushButton.setEnabled(True) self.stopButton.setEnabled(False) breaker = 1 def window3(self): self.pushButton.setEnabled(False) self.stopButton.setEnabled(True) self.worker = WorkerThread() self.worker.start() #self.worker.update_progress.connect(self.showtext) class WorkerThread(QThread): #update_progress = pyqtSignal(str) def run(self): global arduinodata, breaker ser = serial.Serial('com4', baudrate=9600, timeout=1) ser.open while True: if breaker == 1: breaker = 0 ser.close break arduinodata1 = ser.readline().decode('ascii') if arduinodata1 != '': arduinodata += arduinodata1 print(arduinodata) arduinodata1 = '' if __name__ == "__main__": app = QApplication(sys.argv) window = Window2() sys.exit(app.exec())