I made this simple case for my Arduino nano to protect it from potential short circuits and sharp edges.
This case only fits those who choose to solder the pins upward, like displayed in the picture!!
While maintaining the access to all the pins, labels, leds and switches, this case makes it a bit easier to handle the nano (as it is now a block shape) and it also leaves the space for the USB connectors.
All the pins are slightly lower than the case top so no more sharp pins sticking out.
You will need four M3*10 hex socket bolts to assemble this case.