I followed the instructions in this: https://eldontronics.wordpress.com/2018/02/11/lcd-module-connection-to-arduino-board-with-without-an-i2c-module/and followed the "Direct connection" section and I'm just trying to display "HelloWord" using the example under the liquidcrystal libraryI'm getting this error message: Arduino: 1.8.9 (Windows Store 126.96.36.199) (Windows 10), Board: "Arduino Nano, ATmega328P"WARNING: Category 'Display, Hangul' in library LiquidCrystal_I2C_Hangul is not valid. Setting to 'Uncategorized'Sketch uses 1902 bytes (6%) of program storage space. Maximum is 30720 bytes.Global variables use 59 bytes (2%) of dynamic memory, leaving 1989 bytes for local variables. Maximum is 2048 bytes.An error occurred while uploading the sketchThis report would have more information with"Show verbose output during compilation"option enabled in File -> Preferences.
OK, that does not tell too much. Usually it gives a hint about what is wrong.Next step is to get rid of the windows store version and install the normal IDE (current version 1.8.9) from https://www.arduino.cc/download_handler.php?f=/arduino-1.8.9-windows.exe.The windows store version can exhibit strange behaviour and this might be part of it.Question: is COM3 indeed the port that shows up in device manager when you connect the board to the PC?