# The Time Fountain (Also know as Magic Fountain)

Update 05 June 2011: Here http://www.instructables.com/id/Magic-Fountain-Ultimate-Version/ a new and different version.

I was inspired by some others projects on internet (like this, for example: http://www.youtube.com/watch?v=ZRlNOyxWWf8& )
This "Time Fountain" works by the principle of the Stroboscope: http://en.wikipedia.org/wiki/Stroboscope

I made this fountain using a little submersible water pump inside a decorated jar, fluorescent water (with highlighter's ink) and UV LEDs, to obtain strobe light, using a simple strobe circuit based on a pair of ne555 (with a low duty cycle).
With this circuit we obtain a strobe light with duty cycle and frequency both adjustable via two potentiometer.
The transistor (2N1711) can handle a maximum current of 500 mA.
I used 18 LEDs UV.

My Time Fountain video :

http://www.vimeo.com/23475559

Is very important to obtain a regular drip rate, for this i've used an infusion medical kit like this: http://servizimedia.altervista.org/fontana/img/Contagocce.jpg
The water is pumped upward, through a tiny pipe, and falls again inside the jar, cyclically.
With the strobe light (with a potentiometer we can set the frequency of lamps) i can set the effect on the drops, as you can see in the video. The drops are constant, i just change the LEDs frequency.

With strobe light we get the illusion of freezing the drops of water in midair, slowed or reversed!

My Time Fountain video II (click here if the player don't works )

I've also wrote a step to step guide (in Italian) here: http://servizimedia.altervista.org/fontana/fontana.html

robot797 says: Mar 11, 2013. 4:31 PM
why did you use 2 555's
it looks like you clould have done it with one
itge13 says: Jul 21, 2012. 12:04 PM
What do i have to do with this information "The transistor (2N1711) can handle a maximum current of 500 mA"?
could you also tell me wich potentiometer you used and how i have to control the leds with them?
jamesmcgehee says: Nov 26, 2011. 9:34 AM
Hey how important are the resistors size and restistance
macnomad84 says: Oct 13, 2011. 10:35 AM
the 16 LED's are all in parallel?
dany-dan says: Sep 13, 2011. 4:33 PM
hi dave could you please tell me the frecuency of your led strobe light?
thank you
trrydms says: Aug 15, 2011. 9:34 AM
This is totally cool. Thanks for posting.
almostprincecharming says: Jun 15, 2011. 1:33 PM
can u make a step by step instruction in English? or at least just on how to make the circuit. please and thank you.
garrett10 says: Jun 4, 2011. 6:14 PM
What is the approximate cost of this project?
Dave Diamond (author) in reply to garrett10Jun 5, 2011. 7:48 AM
Hi,

18 LEDs: 5,20 Euro
Jar: 4,50 Euro
Strobe circuit: 10 Euro (assembled by myself)
Medical infusion kit: 1 Euro
Pipes: few Euro cents (about 0,60)
Water pump: 10 Euro
Black paperboard: a few Euro cents :-)
Fluorescent ink: i've just used 3 highlighter (one highlighter cost about 1,50 euro): 4,50 Euro
But for this part is more convenient to buy fluorescent ink in some DIY store..
For this project: http://www.instructables.com/id/Magic-Fountain-Ultimate-Version/ i've used 250 ml of fluorescent ink just for 3.20 Euro

So, the total cost for me is: 36,30 Euro (53 Dollars)
garrett10 in reply to Dave DiamondJun 5, 2011. 9:22 PM
Thank you! I might just do that this summer!
Awesome-aniac says: May 10, 2011. 8:03 PM
I actually made one of these. It took over 50 hours to do, and it only uses 1 555 timer.
Dave Diamond (author) in reply to Awesome-aniacMay 11, 2011. 3:32 AM
Good!

So, You can submit it in this site ;-)
ChrysN says: May 10, 2011. 3:51 PM
Cool!
Dave Diamond (author) in reply to ChrysNMay 10, 2011. 4:23 PM
Oh yeah!

And in nighttime it looks much cool and magical!
Dave Diamond (author) says: May 10, 2011. 1:17 PM
Hi phevtron,