Making an LED you blow out like a candle, without any additional sensors

#1

Originally published at: https://boingboing.net/2018/08/21/diodes-are-warm.html

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#2

Shouldn’t the phrase in the title be “blow out LIKE a candle” instead of “blow out WITH a candle”?

#3

Title’s a bit confused - I presume you mean “like a candle”, not “with a candle”

#4
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#5

I want one where the bulb is the switch so you can just put your fingers on it to turn it on and off.

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#6

but… isn’t his breath warmer than ambient air?

#7

That’s much less cool than I thought from the blurb, since it relies on the arduino to cut the current. I was thinking that the temperature change actually changed the rectifying behavior of the diode, which would have been really cool.

#8

Yes, it is. But the real question is if his breath is warmer or cooler than a lit LED.

1 Like
#9

Maybe it is, but the current of air allows for more heat from the LED (that is presumably hotter then his breath) to be exchanged with the air. I think…

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closed #11

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