Uranium Marble Ring Oscillator

Description

Seven UV LEDs facing inwards on a circle around a uranium glass marble, wired as a ring oscillator to create a beautiful glowing/spinning effect.

This is my take on the original design that has apparently been around since at least 2009 (at 26C3).

Details

Components

1 × Uranium Marble
7 × UV LEDs
7 × 2N7000 transistor Discrete Semiconductors / Diode-Transistor Modules
7 × 300 Ω resistor
7 × 33 kΩ resistor

View all 7 components

Discussions

lantramnamcodon wrote 05/08/2017 at 15:59

have you tried to make laser with uranium glass?However that could have made you cancer.

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Rjpope42 wrote 02/15/2016 at 16:02

Thanks for the reply, I got some 385 and some 400nm from digikey, the 400nm were cheaper and work better

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Rjpope42 wrote 02/07/2016 at 05:32

Very nice!

What wavelength LEDs did you use?

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Daniel wrote 02/15/2016 at 11:06

Sorry, a friend had those LEDs just lying around so I don't have any info on that. You can clearly see them emitting visible light... if that helps. Not sure if the marble reacts to one specific wavelength..

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Uranium Marble Ring Oscillator

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