Solving typical issues in DWM

Fixing misbehaving Java applications (Arduino IDE)

Setting export _JAVA_AWT_WM_NONREPARENTING=1. Setting wmname "LG3D" using wmname may help too. This will requieres to install wmname using pacman.

How to fix Error Opening Serial Port dev ttyUSB0

ls -l /dev/ttyUSB*
crw-rw---- 1 root uucp 188, 0 Feb 24 23:47 /dev/ttyUSB0

sudo chmod a+rw /dev/ttyUSB0

ls  -l /dev/ttyUSB0
crw-rw-rw- 1 root uucp 188, 0 Feb 24 23:47 /dev/ttyUSB0