This is a connector for 3-pin LED strips, such as the WS2812/W2812B RGB LED strips/tape.
UPDATE: Just added a version 2 (v2) of the connector. I've made them smaller and more compact. The V2 STL file has a connector with square corners and one with rounded corners.
I took my digital caliper to a set of these LED strips and was surprised that I got such a nice fit on the first try.
I'm still working on improvements. I really want to get the size smaller and more compact because I feel they are too bulky at the moment. I don't know if my printer can work that small though.
22 gauge wire is fitted through the back of the connector which has round holes to accept the wire. The bare wire extends all the way in until is flush with the end of the connector. You'll then have to hot glue the wire or find some way of making it stay put.
Flow some solder onto the LED strip contacts so you have a modest solder "bubble."
- Push the connector snugly over the strip until it clicks over the bubble. This click should help secure the connector.
I've experimented with making the hole small enough to grip the wire but it is pain to push in at that point. Maybe in the future I'll try to make this connector into two parts that clasp together, hopefully holding the wire in place without an adhesive.
I'd like a more decisive way to make the wires contact the LED strip pads like some spring contacts or something but that's beyond my abilities, probably.
Most of all, I'd really like to make these a ton smaller. I enjoy using these LED strips and this would make them more manageable for small projects.
Feel free to suggest anything or remix this, of course!