Comment on Follow up. They fixed the light bulb

willya@lemmyf.uk ⁨1⁩ ⁨year⁩ ago

• PupBiru@kbin.social ⁨1⁩ ⁨year⁩ ago

  colour temperature is only changeable when you “mix” other colours in: usually you have cold white and warm white LEDs and you mix them to get whatever temp you want

  for commercial, i doubt they’d double the LEDs so you could adjust them… the name of the game in commercial lighting is but what you need, buy it cheap, and don’t pay for things you won’t use

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  • Laticauda@lemmy.ca ⁨1⁩ ⁨year⁩ ago

    There are led bulbs that have variable light temperatures, I have some in my room as we speak. Don’t need multiple bulbs. They’re not that expensive either.

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    • PupBiru@kbin.social ⁨1⁩ ⁨year⁩ ago

      not multiple bulbs no, but those bulbs have multiple LEDs in them… LEDs only have a single colour, but you can produce variable colour (or colour temperature) bulbs by mixing R/G/B or warm white and cold white

      philips hue bulbs for example have red, green, blue, warm white, and cold white LEDs so they can mix any colour or colour temperature

      to have variable colour temperature requires a warm white and a cold white LED that get mixed, so they’re always being used at 50% or less (because 50% emission on both is the same brightness as 100% of 1)… commercial fixtures are likely to not give that option and only include a single LED at fixed colour temperature to avoid 2x the parts

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      • Scubus@sh.itjust.works ⁨1⁩ ⁨year⁩ ago

        It gets funnier when you realize that warm white is physically colder than cool white as well. And vice versa.

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• sznowicki@lemmy.world ⁨1⁩ ⁨year⁩ ago

  No no. We’ve see the Hausmaister coming in the morning and replacing the bulb ;)

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• FuglyDuck@lemmy.world ⁨1⁩ ⁨year⁩ ago

  Adafruit has an excellent tut on controlling RBGW arrays via a pi pico and circuit python (or a lot of other controllers. or whatever.) I built the niece a night light/bed lamp (along with a white noise generator) It has a number of different odds and ends to control it, including five rotary encoders that also have push-button switches… it didn’t take her too long to learn that, if the button switches happen to be pushed in the right sequence… “Party Mode” comes on, with rainbow flashy goodness.

  The, uh, sequences keep mysteriously changing and getting tougher for some strange reason…

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