Red Flashlights

[g_damian]

I think noone has mentioned it before in this thread - Convoy uses buck drivers for red leds, so it’s pretty efficient. I have previous generation of these drivers (4 or 5 groups to choose from) instead of the newer 12 groups. They last a long time on lower mode (20% I think).

[PiercingTheDarkness]

You just message Convoy and ask for the SST20 660nm. Simon customizes them to what you want

[Quadrupel]

For an astronomy you’ll be fine with ordinary warm white led on “moon level”. Red light is good for hunting … horny animals only.

[buck91]

@g_damian

I think noone has mentioned it before in this thread - Convoy uses buck drivers for red leds, so it’s pretty efficient. I have previous generation of these drivers (4 or 5 groups to choose from) instead of the newer 12 groups. They last a long time on lower mode (20% I think).

Any idea with the Vin range is then?

[Oli]

Wurkkos HD15R . You can use it handheld, use it as a headlight, or clip it onto pockets or other clothing. Yes it has a white LED at the top, but you could easily tape that up to avoid any mistakes when that is an issue. The lowest mode is not memorized but you can turn it on that way every time with a press and hold. It would be a very wide beam, not a thrower. I do not have the R model but I have the 4000k HD15 and it is a good light. Plenty of reviews on YouTube.

[jon_slider]

@Lacci

I’m also open to some diy in the future

that creates a lot of possibilities, for example I just ordered a Sofirn HS10 that I hope to chage the LED in. the light is on sale for $17 with battery and headstrap on Aliexpress, I buy bare 660nm LEDs from Kaidomain, and reflow onto the stock mcpcb.

some photos of the LED swap process in an SC21 Pro:

[Album] Sofirn SC21 Pro mod to 660nm Red

and photos of the LED swap process for a Thrunite Ti3 V2:

FS Thrunite Ti3 modded to High CRI

thanks for helping me reduce chaos and confusion the price is $40 plus ship or if you would like to mod your own, Im happy to share info… here are some highlights: The pill unscrews easily: [image] remove centering ring: [image] unsolder the red and black wires [image] and remove LED Star [image] reflow a new LED: [image] reassemble [image] They make nice beams w stock reflector: [image] [image] Pebbled TiR option , thanks to moderator007 sharing his research: [image] really…

good luck w your quest

[PiercingTheDarkness]

I just hate the mcpcb’s from Kaidomain with the holes for the screws so close to the pads.

[azj]

@Quadrupel

For an astronomy you’ll be fine with ordinary warm white led on “moon level”. Red light is good for hunting … horny animals only.

This - just remember for astronomy you don’t want it to be too bright. Even if it’s red it can still ruin your night vision. There’s an old topic on CloudyNights about this

[Bart1080]

…keep in mind that for only a couple of dollars extra, the batteries are included

Convoy L21B - CSLNM1.23

[jon_slider]

@Lacci

Astronomy people usually recommend dedicated red lights because

agree!

Red 660nm Is The Way.
.

Those SC21 Pro are on sale on Aliex…
modding sequence album: Sofirn SC21 Pro mod to 660nm Red - Album on Imgur

@Correllux

The 660nm in real life is…it’s just really neat

agree!

660nm Red Is The Way

[buck91]

660nm… XPE or SST20 - that is the question!

[jon_slider]

there is also an xp-g3 660nm

they all work just as well… grab whichever one is handy

more info:

Cree XP-G3 Photo Red 660nm bare LED

-If you take LED efficiency into account,5700k xp-e2 gets at most 140lm/W. Photo red LED wall plug efficiency is 55%60%, so you get 550-600mW/W, at 40lm/W from 660nm that’s 22-24lm/W, the eye is just not very sensitive to photo red. Edit: actually djozz got over 50lm/W, 122lm at 1A with the XP-G3. There is a >15% improvement in radiant output from XP-E2 to XP-G3 but I think the main difference from my theorical calculations may be the 645nm dominant wavelength, the eye is twice as sensitive at …

@ggf31416

[Lacci]

@jon_slider

@Lacci

I’m also open to some diy in the future

that creates a lot of possibilities, for example I just ordered a Sofirn HS10 that I hope to chage the LED in. the light is on sale for $17 with battery and headstrap on Aliexpress, I buy bare 660nm LEDs from Kaidomain, and reflow onto the stock mcpcb.

some photos of the LED swap process in an SC21 Pro:
Sofirn SC21 Pro mod to 660nm Red - Album on Imgur

and photos of the LED swap process for a Thrunite Ti3 V2:
FS Thrunite Ti3 modded to High CRI - #14 by jon_slider

good luck w your quest

That’s very cool. I don’t know when I’ll have the wherewithal to try mods like that, I’ve struggled with some health stuff, but I’d really like to. What do you have to alter in terms of the drive for the LED and the settings in the light? I have an SP10 pro with anduril 2 I quite like, and another light with that control system would be welcome, but I assumed there’d be some alterations required to drive the led properly.

[darosk]

@Funtastic

@darosk

The convoy 12-groups will have a few with a 0.1% mode. Depending on the led used, that may get you in the range of 5 lumens or less, but probably not a proper moonlight or sublumen level that would be ideal for your use case.

The new 12 groups red driver from Convoy is indeed sublumen, in fact I can hardly see it on lol. I thought it was a bug, but Simon said he changed it to be like that for a truly 0.1% level

very cool

[jon_slider]

@Lacci

What do you have to alter in terms of the drive for the LED and the settings in the light?… I assumed there’d be some alterations required to drive the led properly.

No driver changes. The Anduril drivers work perfectly with the Red LEDs.

[g_damian]

@buck91

@g_damian

I think noone has mentioned it before in this thread - Convoy uses buck drivers for red leds, so it’s pretty efficient. I have previous generation of these drivers (4 or 5 groups to choose from) instead of the newer 12 groups. They last a long time on lower mode (20% I think).

Any idea with the Vin range is then?

input voltage 3-4.2V
output voltage 2-2.5V for red LED
Max output current 2.5A

source: 1.89€ 71% OFF|2,5 EIN fahrer für rot licht (VF 2,0 2,5 V), eingangs spannung 3 4,2 V, für KR CSLNM 1,23 SST 20 DR|Taschenlampen| - AliExpress

[ftumch33]

I have the D4V2 in deep red and it`s awesome!
I also went hog wild and ordered the D4K with 2 deep red Leds` and 2 Deep blue Leds`

[turkeydance]

currently, i am using a “blood tracker” headlamp
as my astronomy red light…similar to this:
(mine is discontinued)

https://www.amazon.com/EverBrite-Headlamp-Headlight-Adjustable-Batteries/dp/B07L3LMJCM/ref=asc_df_B07L3LMJCM/?tag=hyprod-20&linkCode=df0&hvadid=309849971681&hvpos=&hvnetw=g&hvrand=4705448370721511464&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9009671&hvtargid=pla-655586470995&psc=1

[Lightbringer]

I love my WK30s, but the WK40 is a great little option, too.

Switch it to “colored mode”, then you have a simple on/off, and need to 2click to cycle r/g/b/w.

The mag-ring is exclusively for brightness, and the tailswitch exclusively for on/off and modes.

[amberred_runner]

Have you had any issues with the 660nm LED or is that LED able to cope with 4.2v?