Thingiverse
Micro switch for fischertechnik
por juh
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A small 15x15x15mm switch for fischertechnik as a complement to the classic mini switch. Needs a 12.8 x 6.5 x 5.8 microswitch with metal actuator, find them in old computer mice or order them cheap. The design is not perfect, it has a bit more resistance than the original and the contacts are a bit prickly, but they do work if done right.
Print with high quality (.12 mm), no infill, no supports. I used PLA, not sure if the spring part will work as well with other materials.
Needs quite exact prints and thorough sanding particularly of two inside faces (see image). See other images for assembly, the basic steps are:
1. Cut the metal actuator so that it does not protrude beyond the dimensions of the switch when pressed down.
2. Gently bend the three bottom contacts 90° to the front. Watch out for the correct orientation, or the markings will be wrong. Ideally, the contacts will not point straight to the front bit with a slight bulge that will improve the contact with the plug later.
3
Print with high quality (.12 mm), no infill, no supports. I used PLA, not sure if the spring part will work as well with other materials.
Needs quite exact prints and thorough sanding particularly of two inside faces (see image). See other images for assembly, the basic steps are:
1. Cut the metal actuator so that it does not protrude beyond the dimensions of the switch when pressed down.
2. Gently bend the three bottom contacts 90° to the front. Watch out for the correct orientation, or the markings will be wrong. Ideally, the contacts will not point straight to the front bit with a slight bulge that will improve the contact with the plug later.
3
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