import sys from PyQt5.QtWidgets import QApplication, QMainWindow, QWidget, QVBoxLayout, QHBoxLayout, QLabel, QPushButton, QLineEdit, QTextEdit from PyQt5.QtCore import Qt, QTimer from PyQt5.QtGui import QFont import serial import serial.tools.list_ports class RemoteControl(QMainWindow): def __init__(self): super().__init__() self.serial_connection = None self.current_command = "STOP" self.init_ui() def init_ui(self): self.setWindowTitle("Remote Controller") self.setGeometry(100, 100, 600, 500) # Central widget central_widget = QWidget() self.setCentralWidget(central_widget) main_layout = QVBoxLayout(central_widget) # Title title = QLabel("Remote Controller") title.setFont(QFont("Arial", 18, QFont.Bold)) title.setAlignment(Qt.AlignCenter) main_layout.addWidget(title) # Serial connection section connection_layout = QHBoxLayout() connection_layout.addWidget(QLabel("Port:")) self.port_input = QLineEdit() connection_layout.addWidget(self.port_input) self.connect_btn = QPushButton("Connect") self.connect_btn.clicked.connect(self.toggle_connection) self.connect_btn.setStyleSheet("background-color: #2ba2fc; color: white; font-weight: bold; padding: 8px; border-radius: 4px;") connection_layout.addWidget(self.connect_btn) self.scan_btn = QPushButton("Scan Ports") self.scan_btn.clicked.connect(self.scan_ports) self.scan_btn.setStyleSheet("background-color: #54d158; color: white; font-weight: bold; padding: 8px; border-radius: 4px;") connection_layout.addWidget(self.scan_btn) main_layout.addLayout(connection_layout) # Status display self.status_label = QLabel("Status: Disconnected") self.status_label.setFont(QFont("Arial", 12)) self.status_label.setStyleSheet("padding: 10px; background-color: #ffcccc; border-radius: 5px;") main_layout.addWidget(self.status_label) # Command display self.command_label = QLabel("Current Command: STOP") self.command_label.setFont(QFont("Arial", 14, QFont.Bold)) self.command_label.setAlignment(Qt.AlignCenter) self.command_label.setStyleSheet("padding: 20px; background-color: #ffcccc; border-radius: 5px; margin: 10px;") main_layout.addWidget(self.command_label) # Control instructions instructions = QLabel( "Controls:\n" "W / ↑ : Forward\n" "S / ↓ : Backward\n" "A / ← : Left\n" "D / → : Right\n" "Space : Stop" ) instructions.setFont(QFont("Arial", 11)) instructions.setAlignment(Qt.AlignCenter) instructions.setStyleSheet("padding: 15px; background-color: #ffcccc; border-radius: 5px; margin: 10px;") main_layout.addWidget(instructions) # Log area main_layout.addWidget(QLabel("Command Log:")) self.log_area = QTextEdit() self.log_area.setReadOnly(True) self.log_area.setMaximumHeight(120) main_layout.addWidget(self.log_area) self.log("Application started. Connect to ESP32 to begin.") def scan_ports(self): """Scan and display available serial ports""" ports = serial.tools.list_ports.comports() if ports: port_list = "\n".join([f"{p.device} - {p.description}" for p in ports]) self.log(f"Available ports:\n{port_list}") else: self.log("No ports found") def toggle_connection(self): """Connect or disconnect from ESP32""" if self.serial_connection and self.serial_connection.is_open: self.disconnect() else: self.connect() def connect(self): """Establish serial connection to ESP32""" port = self.port_input.text().strip() if not port: self.log("Error: Please enter a serial port") return try: # Connect with ESP32 self.serial_connection = serial.Serial(port, 115200, timeout=1) self.status_label.setText(f"Status: Connected to {port}") self.status_label.setStyleSheet("padding: 10px; background-color: #9dcf9d; border-radius: 5px;") self.connect_btn.setText("Disconnect") self.log(f"Connected to {port}") except Exception as e: self.log(f"Connection error: {str(e)}") self.status_label.setText("Status: Connection Failed") self.status_label.setStyleSheet("padding: 10px; background-color: #ffcccc; border-radius: 5px;") def disconnect(self): """Close serial connection""" if self.serial_connection: self.serial_connection.close() self.serial_connection = None self.status_label.setText("Status: Disconnected") self.status_label.setStyleSheet("padding: 10px; background-color: #ffcccc; border-radius: 5px;") self.connect_btn.setText("Connect") self.log("Disconnected from ESP32") def send_command(self, command): """Send command to ESP32 via serial""" if self.serial_connection and self.serial_connection.is_open: try: self.serial_connection.write(f"{command}\n".encode()) self.current_command = command self.command_label.setText(f"Current Command: {command}") self.log(f"Sent: {command}") except Exception as e: self.log(f"Send error: {str(e)}") else: self.log("Not connected to ESP32") def log(self, message): """Add message to log""" self.log_area.append(message) # Auto-scrolls to bottom scrollbar = self.log_area.verticalScrollBar() scrollbar.setValue(scrollbar.maximum()) def keyPressEvent(self, event): """Handle keyboard input""" key = event.key() # WASD and Arrow key controls if key in (Qt.Key_W, Qt.Key_Up): self.send_command("FORWARD") elif key in (Qt.Key_S, Qt.Key_Down): self.send_command("BACKWARD") elif key in (Qt.Key_A, Qt.Key_Left): self.send_command("LEFT") elif key in (Qt.Key_D, Qt.Key_Right): self.send_command("RIGHT") elif key == Qt.Key_Space: self.send_command("STOP") def keyReleaseEvent(self, event): """Handle key release - stop the car when key is released""" if event.isAutoRepeat(): return key = event.key() if key in (Qt.Key_W, Qt.Key_Up, Qt.Key_S, Qt.Key_Down, Qt.Key_A, Qt.Key_Left, Qt.Key_D, Qt.Key_Right): self.send_command("STOP") def closeEvent(self, event): """Clean up when closing the application""" self.disconnect() event.accept() def main(): app = QApplication(sys.argv) controller = RemoteControl() controller.show() sys.exit(app.exec_()) if __name__ == "__main__": main()