I am thinking of using individual 2020-sized leds for wearable projects. I’m looking for advice and things I should be aware of regarding the various types available (likely from Aliexpress).
- The leds will be part of meshes/tiled patterns, likely embedded in 3D-printed parts. For concreteness, imagine a pattern of 1-inch flat printed hexagons on a fabric backing.
- I plan on designing a minimally-sized carrier PCB so I can connect them all with thin gauge wire (I haven’t found a 2020-sized breakout PCB).
- I am leaning towards 3-wire to reduce the amount of soldering involved. 3-wire will probably mean poor performance at low brightness levels, but considering they will be illuminating 3D printed plastic from the inside, it might be acceptable to run them at a higher brightness—power will come from a 10,000 mAh USB battery pack.
- Alternatively, I could just bite the bullet and design a 4-wire carrier PCB and not worry about colors at low brightness.
Here’s an example listing of SK6805 2020s (APA102 also available).
Is there anything I should be aware of in terms of different 5 V SK and APA variants? Or can I assume as long as they’re 3/4-wire and 5 V, they’re all the same?