Controller.py

# -*- coding: utf-8 -*-
import serial, sys, dashboard, PyQt5, RPi.GPIO as GPIO
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import QApplication, QWidget, QLabel
from time import sleep

def CelciusToFahrenheit(celcius):
    return round(celcius * (9.0 / 5.0) + 32, 2)

class WorkerSignals(QObject):
    temp1 = pyqtSignal(str)
    temp2 = pyqtSignal(str)
    
class TempWorker(QRunnable): 
    def __init__(self, parent=None):
        super().__init__()
        self.__abort = False
        self.SerialConn = serial.Serial('/dev/ttyACM0', 115200)
        self.Signals = WorkerSignals()

    def run(self):  
        while True:
            try:
                line = (((self.SerialConn.readline()).decode('ASCII')).strip()).split("|")
                thermo1 = CelciusToFahrenheit(float(line[0]))
                thermo2 = CelciusToFahrenheit(float(line[1]))
                self.Signals.temp1.emit(str(int(thermo1)) + "°F")
                self.Signals.temp2.emit(str(int(thermo2)) + "°F")
            except:
                print("Error")
            
            if self.__abort:
                break
            
            sleep(1)
        
    def abort(self):
        self.__abort = True

class MainWindow(QMainWindow, dashboard.Ui_StillDashboard):
    def __init__(self, parent=None):
        super(self.__class__, self).__init__(parent)
        self.setupUi(self)
        self.GPIO_1 = 18
        self.GPIO_2 = 23
        self.SetupGPIO
        self.IsRunning = False
        self.RunningStyleSheet = "QPushButton {border-radius: 7px;background: #41CD52;height: 40px;}"
        self.StoppedStyleSheet = "QPushButton {border-radius: 7px;background: #ec7063;height: 40px;}"
        self.horizontalSlider_2.valueChanged.connect(self.TemperatureChanged)
        self.pushButton.clicked.connect(self.RunDistillation)
        self.ThreadPool = QThreadPool()
        self.TempThread = TempWorker()
        self.TempThread.Signals.temp1.connect(self.label_4.setText)
        self.TempThread.Signals.temp2.connect(self.label_6.setText)
        self.TempThread.Signals.temp1.connect(self.TemperatureChanged)
        self.TempThread.Signals.temp2.connect(self.TemperatureChanged)
        self.ThreadPool.start(self.TempThread)

    def TemperatureChanged(self):
        newTemp = CelciusToFahrenheit(self.horizontalSlider_2.value())
        thermo1 = int(self.label_4.text()[:-2])
        thermo2 = int(self.label_6.text()[:-2])
        remain1 = (thermo1 / newTemp) * 100
        remain2 = (thermo2 / newTemp) * 100
        self.progressBar.setValue(remain1)
        self.progressBar_2.setValue(remain2)
        self.label_2.setText(str(newTemp) + "°F")
        if self.IsRunning:
            if thermo1 >= newTemp and thermo2 >= newTemp:
                self.RunDistillation
        QApplication.processEvents()
        
    def RunDistillation(self):
        if self.IsRunning:
            self.pushButton.setStyleSheet(self.RunningStyleSheet)
            self.pushButton.setText("Start Run")
            self.IsRunning = False
            GPIO.output(self.GPIO_1,GPIO.LOW)
            GPIO.output(self.GPIO_2,GPIO.LOW)
        else:
            self.pushButton.setStyleSheet(self.StoppedStyleSheet)
            self.pushButton.setText("Stop Run")
            self.IsRunning = True
            GPIO.output(self.GPIO_1,GPIO.HIGH)
            GPIO.output(self.GPIO_2,GPIO.HIGH)
            
    def closeEvent(self, event):
        self.TempThread.stop()
        QWidget.closeEvent(self, event)
    
    def SetupGPIO(self):
        GPIO.setmode(GPIO.BCM)
        GPIO.setup(self.GPIO_1,GPIO.OUT)
        GPIO.setup(self.GPIO_2,GPIO.OUT)
 
def main():
    app = QApplication.instance()
    if app is None:
        app = QApplication([])
    form = MainWindow()
    form.setWindowFlags(PyQt5.QtCore.Qt.FramelessWindowHint)
    form.setWindowIcon(PyQt5.QtGui.QIcon("icon.ico"))
    form.show()
    sys.exit(app.exec_())
 
if __name__ == "__main__":
    main()