marcoreps
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Embedded LEDs in a flexible 3D print
🕑 Added 2017-12-15 20:45:39 +0000 UTC Last minute Reddit Secret Santa gift for a dog owner: 3D printed flexible LED collarBesides the LEDs there's also a battery and a charge controller embedded in the infill structure. I've just paused the print for 5 minutes and squeezed it all in. Then I've epoxied magnets on both ends so that they only fit together in the right orientation.
The magnets of one side are connected to the battery+/- and charge +/-, the magnets on the other side are connected to the LEDs +/- and nothing. When the collar is closed the LEDs light up.
A USB charge adapter also has a "magnetically coded connector", so that it only fits on the battery side.
In retrospect I should have permanently connected all GNDs together through the collar to reduce the magnet number to 3. Because of that old wobbly table theorem "There always is a plane through 3 points." In reality 4 points are never coplanar, so the LEDs are flickering a bit. But commercial LED collars are blinking intentionally, so we'll call it a feature :)
Comments
Jon Harsem
well played! =) .. nice
Fred Fernandez
Oh Man, what a nice design!..... I Like That!
John McCormick
I've thought of embedding things in my 3d prints but so far I'm just happy if I can make something print that has a hinge.
