Musical and flashing lights water fountain
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From: hamilton on 3 Jul 2010 09:48 On 7/3/2010 7:20 AM, andy baxter wrote: > On Sat, 03 Jul 2010 08:29:59 -0400, Spehro Pefhany wrote: > >> On Sat, 03 Jul 2010 07:02:29 -0500, the renowned andy baxter >> <news(a)earthsong.null.free-online.co.uk> wrote: >> >> This idea was around more than 40 years ago. They called it a "Color >> Organ". > > OK - I remember seeing those things in discos but I didn't know that's > how they worked. Here is a unit I build in high school. http://www.swtpc.com/mholley/PopularElectronics/Jul1966/PE_Jul1966.htm Thanks Don for getting me into the world of electronics. Today I would use a micro to sample the audio and switch the Triacs. This may be what your looking to build. ( there is nothing new under the sun ) http://blogs.msdn.com/b/coding4fun/archive/2006/11/01/918683.aspx hamilton
From: Richard Henry on 3 Jul 2010 11:57 On Jul 3, 1:48 am, eff_ste_at_yahoo_dot_...(a)foo.com (effie) wrote: > Hey > > I am trying to make a dancing water fountain (meaning a water fountain > that moves > according to the music) and also that lights up (eg leds) according to the > music. > Anyone can help me please? Any circuits or ideas will be appreciated > > -------------- > Regards, > > effie > > ##-----------------------------------------------## > Delivered via http://www.electrondepot.com/ > Electronics Enthusiasts' Community of the Net > Web and RSS access to your favorite newsgroup - > sci.electronics.design - 395917 messages and counting! > ##-----------------------------------------------## In the 70's, some friends built a "color organ" into a nice wooden speaker cabinet with small colored incandescent bulbs behind a plastic diffuser screen.
From: krw on 3 Jul 2010 13:22 On Sat, 3 Jul 2010 08:57:20 -0700 (PDT), Richard Henry <pomerado(a)hotmail.com> wrote: >On Jul 3, 1:48�am, eff_ste_at_yahoo_dot_...(a)foo.com (effie) wrote: >> Hey >> >> I am trying to make a dancing water fountain (meaning a water fountain >> that moves >> according to the music) and also that lights up (eg leds) according to the >> music. � >> Anyone can help me please? Any circuits or ideas will be appreciated >> >> -------------- >> Regards, >> >> effie >> >> ##-----------------------------------------------## >> Delivered via �http://www.electrondepot.com/ >> Electronics Enthusiasts' Community of the Net >> Web and RSS access to your favorite newsgroup - >> sci.electronics.design - 395917 messages and counting! >> ##-----------------------------------------------## > >In the 70's, some friends built a "color organ" into a nice wooden >speaker cabinet with small colored incandescent bulbs behind a plastic >diffuser screen. Then I was in college I built a stereo color organ that had two 4'x6' displays using C7 Christmas tree light strings behind a plastic diffuser. The displays were mounted on our living room wall above the speakers.
From: Dave Platt on 3 Jul 2010 13:54 >Hey > >I am trying to make a dancing water fountain (meaning a water fountain >that moves >according to the music) and also that lights up (eg leds) according to the >music. >Anyone can help me please? Any circuits or ideas will be appreciated Google for "color organ", which is the common term for a circuit which adjusts light colors or brightnesses in response to an audio signal. Lots of circuits out there will do this. You could use a similar technique to open/close water valves, or alter the power to a water pump, in order to make the fountain "dance" to the music. Getting this to work in an esthetically-pleasing manner may be tricky due to the time lag: when you increase the water flow or pressure it'll take a very visible amount of time for the shape of the fountain to change. The fountain's shape will tend to lag the music rather badly... sort of a "Dancing with the Really Incompetent" presentation. To make this work well, you may need some sort of time-delay system for the audio and color-organ pathway. Take the incoming audio, feed it into a delay path of 1 second or so, and feed the delayed audio to the color-organ and the amplifier and speakers. Feed the non-delayed audio into the pump control circuit. That way, the pump will speed up, and start increasing the height of the fountain, about a second *before* the music is heard and the lights change. Play with the amount of time delay you use, in order to get the best synchronization between the music and the dancing water. -- Dave Platt <dplatt(a)radagast.org> AE6EO Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads!
From: Jim Thompson on 3 Jul 2010 13:58
On Sat, 03 Jul 2010 08:20:01 -0500, andy baxter <news(a)earthsong.null.free-online.co.uk> wrote: >On Sat, 03 Jul 2010 08:29:59 -0400, Spehro Pefhany wrote: > >> On Sat, 03 Jul 2010 07:02:29 -0500, the renowned andy baxter >> <news(a)earthsong.null.free-online.co.uk> wrote: >> >> This idea was around more than 40 years ago. They called it a "Color >> Organ". > >OK - I remember seeing those things in discos but I didn't know that's >how they worked. > >> >>> If you wanted to be really clever you could store the results in a >>>delay buffer and shift it every 0.2-0.5 sec, and use this to drive a >>>line of tricolour LEDs. >> >> Linear time is kind of boring and not very artistic. There might be >> better ways. >> >> > >Another way if you had the cpu speed would be to make the line of LEDs >follow a wave equation with different wave speeds for different channels. >The effect would be similar but maybe a bit more interesting to look at. See... http://analog-innovations.com/Disco.PDF (I did the lighting and boom-box for Bobby McGee's on I17 (north Phoenix) around 1980 ;-) ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | Obama: A reincarnation of Nixon, narcissistically posing in politically-correct black-face, but with fewer scruples. |