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I made a small LED panel

(www.stavros.io)
154 points Brajeshwar | 3 comments | 09 Oct 25 15:31 UTC | HN request time: 0.634s | source
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Havoc ◴[21 Oct 25 07:51 UTC] No.45653480[source]▶
Tried my hand at this too. Except more janky and was aiming at lots of output.

LED get freaking hot fast at higher wattages and quickly found myself dealing with heat sinks etc.

replies(1): >>45655712 #
1. stavros ◴[21 Oct 25 13:42 UTC] No.45655712[source]▶
Do you need to run them at max brightness? I run them at 10% or so, they're really bright.
replies(1): >>45663544 #
2. Havoc ◴[22 Oct 25 00:23 UTC] No.45663544[source]▶
Don't recall percentage but was pushing a lot of power into it around 8W. That heat obviously needs to go somewhere.

Think the LEDs I had were pretty crappy though, so they probably produced more heat per unit of light than they should

i.e. was more brute force than colour & control

replies(1): >>45663742 #
3. stavros ◴[22 Oct 25 00:54 UTC] No.45663742[source]▶
Hm that's about 256 LEDs, must have been a 16x16 board. Sounds about right, good point.