Notices by deutrino (deutrino@mstdn.io), page 14

@catoutofbed oh dear, the what now

I may have requested samples of a variety of LED strip products from several small Chinese manufacturers and, in so doing, underestimated the emotional labor that would be required when they got up bright and frickin' early Dec 25 and all answered my inquiries within an hour of each other.

Looking on Chinese mainland manufacturer / reseller web sites for veeery specific types of commodity parts is a venture into a land where Geocities meets the worst of the 2015 web (I'd say 2018, but their Javascript horror is a bit behind)

I suspect getting three free samples of very expensive color-accurate photography-oriented LEDs at 2700K, 5600K, and 6500K is actually going to help me a LOT when messing around trying to produce almost-as-good light out of much cheaper commodity components.

"Understand RGB LED mixing ratios to realize optimal color in signs and displays," Lee Boon Hooi, https://www.ledsmagazine.com/articles/print/volume-10/issue-6/features/understand-rgb-led-mixing-ratios-to-realize-optimal-color-in-signs-and-displays-magazine.html

tl;dr the "traditional" 3:6:1 R:G:B ratio is from television phosphors which are different than LED emitters, so you gotta understand that shit and do some math if you want RGB-mixed whites to look right (or, I presume, to accentuate spectrally deficient white emitters with RGB)

#lamps #LEDs #glowy #lighting

Ha, I got free samples of film-quality white LED lighting strips, one 6-inch strip in each of 3200K, 5600K, and 6500K. Probably not bright enough for what I wanna do but something to play with and make an interesting lamp out of.

CRI Ra > 95, R9 > 80. Them's good lamps.

figures I post to bitch about not finding the product I need after an hour of searching and then immediately find it on the next search … at an eye-watering $18.95 / foot.

https://www.environmentallights.com/18324-rgbtw-5in1-5050-60-foot.html

it's RGB + tunable white, which is the level of versatility I truly wanted, though the white emitters are CRI 80+ rather than the CRI 95+ of the FilmSpect(tm) product. I can make up that deficit with the RGB emitters tho, mostly the R.

#LEDs #glowy #lamps

anybody who wants to build the ultimate fkn mood ✨ lamp ✨ should be looking at https://store.waveformlighting.com/products/filmgrade-fivespect-5-in-1-led-strip-lights-for-film-photography-one-reel-16-ft-5-m btw ... sadly 5m the minimum length sold by that (re)seller.

what's unfortunate is that I guarantee many of the cheap strips come out of the same factories as these. so theoretically somewhere out there some fly-by-night operation will sell me a strip with good emitters in ~1m increments. but a lot of those ppl are selling factory seconds. ugh.

✨ #lamps ✨ tho

superbrightleds.com discontinued the 1m lengths of 244 lm/ft RGB+NW LED strip in between the time I found it and the time I had the money to buy what I needed. 😓

attn #makers of glowy LED things: I need a thing, can you help me find?

* cuttable RGBW LED strip or bar lights
* fully integrated RGBW packages, not RGB packages + W packages
* available in either RGB + natural white (~4200K) or RGB + tunable white
* should NOT be individually addressable (I need analog strips)
* do not need to be waterproof
* 12V or 24V okay, 12V preferred
* BRIGHT, min 150 lm/ft, 200+ preferred
* importantly, need to be available in lengths <5m because I am poor

#unicorn

@catoutofbed That honestly might be the exact part I need, thanks! :110:

@catoutofbed Like I've never even worked with breadboard (or at least not in years) so at that point I'd give up and make the bigger part work 😅

@catoutofbed Yeah. Space might be at a premium, I'm not sure yet, but was hoping to find something teeny. It's for my server / circadian smart lamp 😅

I need something like this I2C PWM driver that I can talk to easily from a dev board, but I only need 4 channels (I'm trying to drive a 24V RGBW LED strip)... anybody got parts to suggest? Like this https://www.amazon.com/dp/B01D9VNXEQ

@alva The "soft skills" thing nails it pretty well imo. Source: have literally gotten in trouble at past crap tech job for spending too much time on documentation when I should have been doing the far more valuable job of producing more lines of undocumented code per day 🙄
@ng0 @thor