Trouble uploading to NANO by LAFVIN


I am trying to upload a sketch to my Arduino Nano mad by LAFVIN; however, I keep getting the below pasted error message.

My settings are:

  • Board: Arduino Nano
  • Processor: (tried: ATmega328P (new), ATmega328P (old), and ATmega168)
  • Port: COM3

I have also tried multiple nano boards from LAFVIN.

Does anyone have a solution?

Thank you!

Arduino: 1.8.16 (Windows Store (Windows 10), Board: "Arduino Nano, ATmega328P"

Sketch uses 2456 bytes (7%) of program storage space. Maximum is 30720 bytes.

Global variables use 192 bytes (9%) of dynamic memory, leaving 1856 bytes for local variables. Maximum is 2048 bytes.

C:\Program Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.51.0_x86__mdqgnx93n4wtt\hardware\tools\avr/bin/avrdude -CC:\Program Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.51.0_x86__mdqgnx93n4wtt\hardware\tools\avr/etc/avrdude.conf -v -patmega328p -carduino -PCOM3 -b115200 -D -Uflash:w:C:\Users\Kjeld\AppData\Local\Temp\arduino_build_44187/Stair_Light.ino.hex:i 

avrdude: Version 6.3-20190619

         Copyright (c) 2000-2005 Brian Dean,

         Copyright (c) 2007-2014 Joerg Wunsch

         System wide configuration file is "C:\Program Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.51.0_x86__mdqgnx93n4wtt\hardware\tools\avr/etc/avrdude.conf"

         Using Port                    : COM3

         Using Programmer              : arduino

         Overriding Baud Rate          : 115200

avrdude: ser_open(): can't open device "\\.\COM3": The system cannot find the file specified.

avrdude done.  Thank you.

Problem uploading to board.  See for suggestions.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.


I downloaded and installed the driver from this website: CH341SER.EXE - 南京沁恒微电子股份有限公司

Then I switched the processor back to ATmega328P and the port to COM4.

This post was a big help:

Everything is working great!

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