I just want to make sure that it lasts through new year festival and Chinese new year (since the factories will be closed for quite a long time). If it runs out of stock during this period, then I won’t be able to replenish it.
I may buy one of those 100 LED UV lights in the picture a few posts back, and then i’ll need 2 more packs of your LEDs. 
Okay guys. 2300k has been restocked.
Is there a known site to track these numbers? 17track.net does not seem to be able to find them.
Looking forward to trying out the 2300K. Thanks!
Just put these on USPS website (for U.S. customers) or https://track.thailandpost.co.th/
The registered/ePacket should be trackable by destination country’s postal service. (That doesn’t apply for packages beginning with ‘U’ though since it’s explicitly non-trackable.)
Thailandpost has just changed API and that messes up 17track’s.
Thanks! That clears it up. Both USPS and Thailand Post work.
Another mod, this time a cheap $3 headlamp that I’ve had for years, but never really used regularly due to the light being poor.
This was before I knew about the proper good flashlights and headlamps, and only went to the local hardware store for lights.
It has four 5mm cold white spot beam LEDs and three 3mm red LEDs. Low brightness setting turns on the middle two LEDs, high brightness setting turns on all of them. It takes 3x AAA batteries and has a decent runtime.
Original tint and beam:
PCB with new LEDs, the two in the middle are 2300K and the outer ones are 3400K. This means that on the “low” brightness the light is pretty warm, while on the “high” brightness it gets mixed to a lovely tint of around 2700K with more flood and brightness. Red LEDs are still the same.
Beam profile with the middle 2300K LEDs. Camera @5000K:
Beam profile with all the LEDs, 2300K + 3400K. Camera @5000K:
Beam profile of the red LEDs. Camera @5000K:
Indoor beam shot of the two 2300K, dark wooden hallway with white doors and door frame. Camera @5000K:
Indoor beam shot of the two 2300K and two 3400K. Camera @5000K:
Indoor beam shot of the red LEDs. Camera @5000K:
The headlamp itself, it can be angled and it’s pretty great to wear for the price.
So the LEDs made this cheap light into something I’d actually use more now that the light is a lot better.
It’s perfect for indoor use, as it’s pretty floody and easy on the eyes due to the warm tint. Perfect for reading a book in a tent for example.
I’m most likely going to be hunting these cheap 5mm headlamps and see which has the best UI and modability if that’s a word.
I’ve found a cheap $10 one with a 3W CREE XP-E R3 main LED with a clear reflector and two 5mm LEDs on the sides. That makes for a nice dual-purpose headlamp since the CREE LED will throw decently with 150 lumen, while the two 5mm LEDs can be swapped for either 2300K or 3400K for warm white indoor light. It’s also 3xAAA.
I absolutely love these LEDs, thank you so much for discovering these, rngwn.
Hi. I don’t want to sound like “that guy”, but I don’t think that providing tracking numbers in a public place can be filed under good safety practices. I know it’d be a bit more work, but providing tracking numbers in a private environment (like personal messages) would be safer for those that don’t want their place of residence revealed.
^ that guy has a point.
My package has arrived.
I guess I got a solution:
Tracking will now be given on the paypal receipt instead, which I have noticed it allows me to fill in the T/N.
Thank You for your discretion. I REALLY look forward to those 2300k LED’s. I’ve been looking for something like that for quite a while.
Even more modding, now the $10 headlamp I was talking about. This one has become my favorite multi-purpose headlamp, even though I have brighter ones (PL47G2 for example).
Original specs:
- 3W CREE XP-E R3 main LED w/clear reflector, around 5500K tint
- 2x 5mm white flood LEDs, around 6000K tint
- UI with 7 modes: Main bright, main dim, main blinking, flood on (main off), flood SOS, off. Hold for off in any mode.
- Tilting head, around 45 degrees downwards.
- 3xAAA batteries.
The headlamp (with 2300K modded flood LEDs)
Main LED beam & tint. Pretty tight beam and it has plenty throw. All the beam shots are a meter from the wall. Camera @5000K:
Original ~6000K flood LED beam & tint. Camera @5000K:
Modded 2300K flood LED beam & tint. Camera @5000K:
Original vs modded headlamp. Camera @5000K:
Pretty satisfied with this one, I’ve used the main light outdoors and it throws pretty far for a cheap headlamp. The flood LEDs are great for indoor use with the warm tint. I’m going to do a few of these and give them away to friends and family. People seem to be amazed by proper warm white LEDs because they’re so rare.
Bonus mod, 11-LED hurricane lantern with dimmer. Made out of metal and glass.
It’s using 2x D-batteries which makes for great battery life.
Original LEDs are supposedly warm white, modded LEDs are 2300K.
Original tint, quite cold for a light that’s advertised as “warm white”. Looks green-ish. Camera @4200K:
Modded tint with 2300K LEDs. Camera @4200K:
Added frosted glass for a more even light spread, looks much nicer.
It’s just for decoration purposes, but it works to light up a room in case of a power outage. Pulls 17mA at 3V on the lowest brightness, 320mA at 3V on full brightness. Sorry if these mods are tedious, I hope they bring some inspiration for the LEDs.
Keep them coming
Is that lantern something that is currently available?
Actually, after seeing DBSAR’s collection, I’m thinking of getting an actual kerosene lantern of my own for use around my fire pit, but why not both?
And if anybody knows of an LED candle that isn’t difficult to mod, but will retain its flicker with an LED swap, I’m also interested.
My wife’s current candles all have amber LED’s. One type is easy to mod, but the flicker is built into the LED itself. The other type has actual wax molded around a plastic base and can’t be disassembled without destroying the wax.
Thanks. I received an email from Paypal this morning reporting the invoice has been updated with tracking info.
Yes Nismo I love seeing new ideas. And I just got my own bag to try my hand at a few.
i received some today! i like these a lot. 
I’ve got 2 of these:
28 LEDs
With a modified tail switch it can now both tail stand and fit an 18650 (unprotected though).
And one of these on the way:
21 LEDs
Should i get one of these too?
