| 
						
						
							
								
							
						
						
					 | 
				
				 | 
				
					@ -101,18 +101,23 @@ and must probably you will requiere pip3 python package manager: | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					sudo pacman -Sy python-pip | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					``` | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					## `Permission denied: '/dev/ttyUSB0'` | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					If you try to upload the code to the ESP32 board and receives the next error: | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					
 | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					``` | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					Permission denied: '/dev/ttyUSB0'` | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					``` | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					thus, check the ttyUSB0' group by listing:  | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					``` | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					ls -l /dev/ttyUSB0 | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					crw-rw---- 1 root uucp 188, 0 Aug  7 14:50 /dev/ttyUSB0 | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					``` | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					
 | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					next, add your user to the group and try again | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					``` | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					sudo usermod -a -G uucp $USER | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					``` | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					**Note: you need to relogin into you session and try to upload again.** | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					
 | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					``` | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					groups | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					libvirt uucp gmarx | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					``` | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					
 | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					**Note: you need to relogin into you session.** | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					
 | 
				
			
			
		
	
		
			
				
					 | 
					 | 
				
				 | 
				
					
 |