Indeed, sticky finish is what i get too.
Clean and polish then.
You did a nice job at that. :+1:
Iāve got this type of a light today. White.
Itās a bit larger than I expected really.
Has no UI, plug in to turn on. Beam is mostly rectangular, not clean. Very cool ugly tint. I donāt like it.
It would be cool to have a micro-USB sized lightā¦Type-A light + micro USB adapter = not so tinyā¦.
I did a quick search, failed to find anything.
I wonder if it would be easy to use oshpark or similar service to make a simple light with Optisolis and resistorā¦
Iāve got my second set.
Warm variant of these:
Beam is artifact-free. Tint is OK. I likeā¦.but they were too large.
So I decided that I wanted to be like CRX, took a file and worked on it until I liked the result (checking if itās still working from time to time).
At one plug-in, there was a blink and the light went dark.
No good.
So I took another, filed a little less. It works and is significantly better than stock. And it weighs 13% less too! Thatās a whooping 0.4g saving.
In my powerbank:
You know youāre a true flashaholic when the powerbank you attached your USB light to is a flashlight in and of itself 
I intend to use it as an alternative to diffuser that weighs less and produces warmer light. 
Will it work well? Iāll see.
I have a couple of those that I justed used with my power banks during a 3 day snow storm power outage. They were easily as useful as my fancy expensive lights!
Yep, and the WW ones are soooooooooo invitingā¦
Dang, what dungeon did you crawl through to find this treasure?
Actually I stumbled upon it while looking for something entirely different. I think powerbank controller boards with Type C.
I got the ramping version, which is a little touchy (no pun intended). Itās kind of random what level of light youāll get. If I buy more Iāll look for a different interface.
They are cheap ($0.89) enough that I bought a handful. I left them in the little plastic bags they came in and distributed them liberally. Thereās one in my backpack, wallet, bag of cables in my laptop bag, desk drawer, and rubber-banded to each of my power banks.
Iāve got a few like the ones in the first pic. I hardly ever use them but they are a little bit of insurance that takes up practically no space in a computer bag, belt pouch or even a wallet. Thereās USB ports practically everywhere so why not?
A really small dimmable variant:
https://www.aliexpress.com/item/32970355454.html
Is it compatible with Optisolis? 
I wonāt check, I expect it to be quite dim but I do wonder. And Iām really amused by the small number of components. Simple!
2-sided RGB:
https://www.aliexpress.com/item/4000298386799.html
I was not aware of such extensions:
https://www.aliexpress.com/item/4000188036805.html
Nice.
I wish there were somewhat larger and brighter tiny lights. Put 12-18 5730 LEDs on one side, control on the other. Wonāt weigh enough to stress USB port and even with limited cooling it will be bright enough to be useful.
I tried learning PCB design twice already but with no electronics knowledge it doesnāt go smooth. Maybe the third trial will be more successful.
Nice find. Heck, instead of using a work light as a powerbank, turn your power bank into a worklight.
Also,light with Color LED
Anyone how to change German to English in Banggood so I can
Buy some toys, please.
NVM, danka. Changed. 
Is it USB-c? Standard? I donāt understand what they plug into.
Most of these lights are Type A male plugs but without the typical metal shroud.
I played with some of these a while back. Got a bunch (like 50pc) for next to nothing (like $5, or $0.10 each) but they were cool white. I had a bunch of 2700K Samsung LEDs I also got for nothing on closeout at Arrow (again, like $0.10 per LED).
I reflowed the Samsung LEDs as shown, and boom and nice WW color temp. Added a bit of conformal coating and I sold them for like $5/ea to backpackers/campers (warm white is SOOOO much nicer when camping). Made like 2000% profit, lol.
Full gallery:
Sample:
