Originally published at: http://boingboing.net/2016/10/17/make-mad-scientist-test-tub.html
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The project uses a Feather microcontroller to shine UV LEDs into test-tubes filled with water doped with elements that fluoresce under UV.
Couldn’t you accomplish that with a device called a copper wire? How many microprocessors does it take to turn on a light bulb?
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Relevant XKCD
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But they flash on and off!
Kids these days, can’t flash an LED without a microcontroller.
Haven’t they heard of a 555 timer? Why when I was younger we had to use two transistors to make a multi-vibrator, and we LIKED it!
And before that we relays. They made a nice clicking sound.
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Relays? Luxury! Why, we had to open and close the shutter on the lantern!
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LANTERN! How well off must you have been.
We had a single candle we had to repeated light and blow out.
Edit: AND we were HAPPY about it.
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Some unique cryptozoological foeti in each tube would be a nice finishing touch.
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Oh, that’s perfect!
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CANDLE?! Why we couldnt scrape together the earwax for one of those!
We had to beat each other senseless if we wanted to see flashing lights.
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