This started as an idea that one of the women at the local hackerspace had. 
She wanted to have shoulder-buttons with port and starboard lighting.

With that idea i made this Ø32 mm coat button, which i plan to sell on etsy. 
Hence the CC BY-NC-ND license.
However to test i made a Ø25 version for my own jacket as it happened to miss 2 buttons.

After about a week i found out that the leds needed some strain relief, therefor i designed a backing plate, which the led legs goes through and into 2 small grooves, where the 2 wires are then soldered onto the led in a recess near the edge.
The wires themselves are also strain relieved by going between the fabric and backing and then through it.

I tested the backing and it could succesfully hold +2kg for more than 2 hours, where the led still worked afterwards.

There are 2 versions of each button, one that just sits over the led (not yet tested) and one that should be pressurefit, though i had to drill the buttons with a 5mm drill to get perfect fit, followed by gluing the led in place with CA glue.

They are designed to fit these leds, but may fit others
[https://www.aliexpress.com/item/32869675133.html](https://www.aliexpress.com/item/32869675133.html)

They are designed to be printed on an SLA printer, so dont expect it to work on an fdm based printer.
I printed mine on an anycubic photon mono, using Lafvin Transparent resin.

Released by OKK-Design.eu aka Mysli0210 (kaspertulstrup@gmail.com)
Under CC BY-NC-ND 4.0 license
[https://creativecommons.org/licenses/by-nc-nd/4.0/](https://creativecommons.org/licenses/by-nc-nd/4.0/)

Hope you like it :)