this post was submitted on 09 Feb 2024
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Why It Was Almost Impossible to Make the Blue LED (youtu.be)
submitted 9 months ago by Whirling_Cloudburst@lemmy.world to c/technology@lemmy.world
206 comments fedilink hide all child comments
 

The blue LED was supposed to be impossible—until a young engineer proposed a moonshot idea.

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[–] FrostyCaveman@lemm.ee 15 points 9 months ago (2 children)

That was a great read, thanks. It made me realise I don’t even remember the last time I changed a light bulb!

[–] SeaJ@lemm.ee 15 points 9 months ago (2 children)

I wish I could say the same. I have had one of two that had circuits that burned out. One was cheap and not surprising. The other was a Hue. Speaking of Hues, mine all seemed to stop working with Google Home and one even decided it would permanently be disco time and continually flashes. Zigbee compatible bulbs only from now on for me.

[–] targetx@programming.dev 13 points 9 months ago (1 children)

Aren't all Hue bulbs Zigbee? They have some WiFi or bluetooth models now I believe but afaik all of them support Zigbee with a bridge.

[–] GreatAlbatross@feddit.uk 1 points 9 months ago

There was encryption for a while, iirc. This was removed, and you can now communicate directly with Hue bulbs.
You can also use bluetooth for hub-free operation directly from a phone.

[–] RedWeasel@lemmy.world 4 points 9 months ago

The leds can work for like 20 years. On the other hand the rest of the components are not necessarily going to last that long unfortunately.

[–] FlyingSquid@lemmy.world 8 points 9 months ago

I've changed my fair share of LED bulbs. Nowhere near the frequency of incandescent though.