http://makezine.com/2016/03/08/beautiful-woman-soldering-stock-photo-wrong/

@Maurice-Krijtenberg or mount them upside down, so the pins will stick out above the arduino. This way you don't have to clip them and you can even still connect jumper wires to them.

@mfalkvidd said: However, it looks like the header pins have not been soldered to the Nano. Good eyes and nice catch ;)

http://www.ebay.com/itm/161806126324 I am going to use these magnetic switches on my postbox lid. Haven't got them yet, so cant say if they are any good or not.