Project: SUNLIKE LT1 board (Option for 660nm Red)

K, PP payment made.

https://www.eurekatronix.com/shop

Already tried there. You can add to cart but can’t actually purchase anything.

Have you tried email contact? The last time I was there the checkout page told the user to contact them. There is an email on their contact page. I would try contacting clemence thru the email.

I did get that message, but I’m also waiting for Clemence to fulfill an outstanding order that I paid for over a year ago, which is part of the reason I was hoping there is another source for E21A. Unfortunately it looks like there isn’t, unless I want to order and entire reel.

Oh. Covid hit Indonesia quite hard

It will be interesting to see what impact the LT1’s opaque white lens will have on red emitters. Has anyone tested this yet to confirm?

The diffuser should be color neutral, so the red should remain red.

I seem to recall somebody sharing an emitter swap in an LT1 to replace the CW LED’s with photo red XP-E2’s, but I can’t find it now.

Diffusers mainly lower the blue region of the spectrum, relative to the rest, red gets out relatively easy.

Rayoui, Cutter sells some E21A leds, nothing loose though, all mounted on mcpcb’s

email me for emitter sales
cheers

Any idea when these will ship? How many orders have there been?

I know I'm gonna forget about this...

It’s been about 2 months, some form of update would be nice…

It looks like there is another option for extremely warm white aside from E21A’s.

A member of the flashlight reddit shared recently that Luxeon 2835N is available from Mouser in 1800K, 90 CRI. These are 2835 size, so they should be a perfect fit for Sunlike’s board:

A 2200K, 90 CRI version is also available:

The datasheet is here:

These are mid-power LED’s - binned at 65mA, max rated current 300mA for the N series (1st link) and 480mA for the HE series (2nd link). This should be fine for the LT1. Maximum current per emitter with 7 x 7135’s divided by 18 emitters would be 136 mA.

The spectral graph is on the bottom half of page 10 of the datasheet. I’m sure it’s not Sunlike level CRI, but it looks as it should - still a little light available past 450nm on the blue end of the spectrum, and lots of light at 650 nm and beyond on the red end.

These look quite promising. I’ve been really busy over the past month and have been unable to follow blf. I sent an email to LampMan yesterday and I’m waiting on a reply.

I don’t like the look of his most recent entries on his blog. Telegram: Contact @sunlikenews

Someone jailed?

Hmm, not nice :frowning:

So, if I am reading correctly… I would go to his website, configure and order but not pay until instructions are emailed? Looks like maybe delivery sometime this winter?

It seems like nothing much will happen soon in this project, unfortunate things may have happened to Lampman (SunLike). See above posts.

Just to be clear, he lives in Belarus and the updates say he was arrested for speaking out about a member of Lukashenka’s regime online, so he’s currently a political prisoner like many people in that country. The latest update is his mailing address at the prison where he’s being held, so it doesn’t seem like he expects to be released any time soon.