All those inductors... Isn't there a cheaper way to drive those lights, e.g. usi... | Hacker News

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amelius 5 months ago | parent | context | favorite | on: I built a light that reacts to radio waves [video]

All those inductors... Isn't there a cheaper way to drive those lights, e.g. using DC voltage+pwm?

seszett 5 months ago | [–]

Those inductors are cheaper than what PCBWay charged for making that wooden box, I don't think their cost matters much here.

tzvc 5 months ago | [–]

Yes each LED channel has an inductor. I needed this because I wanted the LED to be constant current driven, to reduce flicker and improve their longevity

(and they cost like 5ct each)

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