4 ms·

> but 3 milometers across? That's unworkable without a full SMD station. I don't suppose they make them on breakout boards do they? It probably comes on a pad.

> but 3 milometers across? That's unworkable without a full SMD station. I don't suppose they make them on breakout boards do they? It probably comes on a pad. Just to show you, made this just for you.[1] Cree XP-E Red (this one is 630nm). Last two images show 0.06Lm, but on turbo it is very bright, 160Lm. Modder linked in my last post did the swap for me in a ThruNite TiS, but it was the generation after this[2], 0.06 Lm, 12 Lm, 160Lm. The middle mode, 12Lm, is about the equivalent brightness of 3Lm of neutral white, meaning even though 12Lm of red is much brighter than 3Lm white, can see about the same with 3Lm of neutral white due to its much superior color rendition. [1] https://imgur.io/a/f9JC1Ya https://imgur.io/a/f9JC1Ya [2] https://www.amazon.com/ThruNite-Tis-CW-Portable-Flashlight/dp/B00SFMFKQY/ https://www.amazon.com/ThruNite-Tis-CW-Portable-Flashlight/d...

moffkalast 4y ago
Ah thanks, that looks rad/red alright. > this one is 630nm Are you sure, that really ought to be more around 650 nm. I was checking the datasheet [1] for the W2812 just to see how far they go (since I have hundreds around the apartment and can set them to full red) and even something as cheap as those can apparently go to 620-630 nm according to the spec. The optimal wavelength listed in various articles seems to be more like 670 nm. I wonder if one could just do a longer exposure with a less accurate diode and get the same results though. > probably comes on a pad Comes on a reel apparently. Do they think they're selling to people with industrial PCB robots? haha [1] https://cdn-shop.adafruit.com/datasheets/WS2812.pdf https://cdn-shop.adafruit.com/datasheets/WS2812.pdf
- Maursault 4y ago
  It's red until compared to real red, then it looks red-orangy. It's an older discontinued XP-E, the first generation of them. Oops, actually, it's 625nm[1] I wanted the Photo Red XP-E, but they were hard to source at the time. [1] https://www.ledsupply.com/leds/xp-e-emitters https://www.ledsupply.com/leds/xp-e-emitters bottom of first table.

moffkalast 4y ago

Ah thanks, that looks rad/red alright. > this one is 630nm Are you sure, that really ought to be more around 650 nm. I was checking the datasheet [1] for the W2812 just to see how far they go (since I have hundreds around the apartment and can set them to full red) and even something as cheap as those can apparently go to 620-630 nm according to the spec. The optimal wavelength listed in various articles seems to be more like 670 nm. I wonder if one could just do a longer exposure with a less accurate diode and get the same results though. > probably comes on a pad Comes on a reel apparently. Do they think they're selling to people with industrial PCB robots? haha [1] https://cdn-shop.adafruit.com/datasheets/WS2812.pdf https://cdn-shop.adafruit.com/datasheets/WS2812.pdf

Maursault 4y ago
It's red until compared to real red, then it looks red-orangy. It's an older discontinued XP-E, the first generation of them. Oops, actually, it's 625nm[1] I wanted the Photo Red XP-E, but they were hard to source at the time. [1] https://www.ledsupply.com/leds/xp-e-emitters https://www.ledsupply.com/leds/xp-e-emitters bottom of first table.