3D Printed 'Microswitching' Hiccups

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progressthProgressTH 03/14/2016 at 12:531 Comment

March 14, 2016 | ProgressTH After some testing and dropping it, and moving it around, and leaving it to sit for a while, the 'microswitch' normally-closed contact (right) doesn't seem to be reliably sticking.

The need for a more robust spring mechanism is apparent and I'd welcome any simple suggestions. Also, if you are really keen on terminology for electronic components and can suggest a better name for what this switch actually does, feel free to share.

However, the normally-open contact (center) still works perfectly and it is still the only one really needed for V.2 of the DIYbio centrifuge we're working on.

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Scott Hodges wrote 03/16/2016 at 15:12 point

I have seem some interesting designs that use a spring made of 3d filament.  Since it is non-conductive, you could add a filament-based helper spring to maintain tension without closing the circuit.   It also looks like you are using wire that is flexible, like paper-clip wire.  Consider using a safety pin instead, since a safety pin will always hold shape. 

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