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