10v trigger for strobe

[Tim]

I have a strobe light which has a xlr input for a 10v trigger. I want
to get this to flash in time to some music, I thought i could make a
cuircuit which would high pass a audio signal so i just get the hi
hats / cymbols and use this to switch a 10v charge. I dont have much
experience, so i need something simple or a schematic to follow. I
was also thinking about getting a pic like the arduino or pic16f84 and
writing a program to similar effect. Advice and help much appreciated
thanks
tim

 

[Tim]

I guess i really have two questions

How do i make a line level high pass filter?

can i then use this signal on the collector of a transistor, what type
of transistor should i use?

thanks again

 

[D from BC]

I have a strobe light which has a xlr input for a 10v trigger. I want
to get this to flash in time to some music, I thought i could make a
cuircuit which would high pass a audio signal so i just get the hi
hats / cymbols and use this to switch a 10v charge. I dont have much
experience, so i need something simple or a schematic to follow. I
was also thinking about getting a pic like the arduino or pic16f84 and
writing a program to similar effect. Advice and help much appreciated
thanks
tim

I've passed this request onto the research team.. Their working hard
on the problem right now.. I should have an answer in 1 week
But seriously..

So you want a flash on the ssss ssss sss sounds...mmmm.....
I'll guess 2nd order HP active filters and a peak detector??

Maybe use a PC sound card?
D from BC

 

[Tim Wescott]

I have a strobe light which has a xlr input for a 10v trigger. I want
to get this to flash in time to some music, I thought i could make a
cuircuit which would high pass a audio signal so i just get the hi
hats / cymbols and use this to switch a 10v charge. I dont have much
experience, so i need something simple or a schematic to follow. I
was also thinking about getting a pic like the arduino or pic16f84 and
writing a program to similar effect. Advice and help much appreciated
thanks
tim

I wonder if the "experimenter's notebooks" that Radio Shack sells would
cover the pieces for this.

Have you searched the web for information?

You need to high-pass, then you need to level detect, _then_ you need to
trigger your strobe. You'll want some sort of automatic trigger level
setting so that you can turn the music down when the neighbors complain
yet still get your flashing lights.

A PIC wouldn't be able to keep up with the high-pass filter part, unless
that was _all_ it was doing. I'd either leave the PIC for another
project or use it _after_ the signal has been high-passed and level
detected.

I'd also look for a circuit first, and only try to invent one if I
couldn't find something that looks probable.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

Posting from Google? See http://cfaj.freeshell.org/google/

Do you need to implement control loops in software?
"Applied Control Theory for Embedded Systems" gives you just what it says.
See details at http://www.wescottdesign.com/actfes/actfes.html

 

[Marra]

I have a strobe light which has a xlr input for a 10v trigger. I want
to get this to flash in time to some music, I thought i could make a
cuircuit which would high pass a audio signal so i just get the hi
hats / cymbols and use this to switch a 10v charge. I dont have much
experience, so i need something simple or a schematic to follow. I
was also thinking about getting a pic like the arduino or pic16f84 and
writing a program to similar effect. Advice and help much appreciated
thanks
tim

I would go for a low pass filter to catch the drum beats.
If you use HF you might get continuous triggers which are too fast for
the strobe.
You dont even need a PIC, just use the output of your filter to drive
the trigger.

I have used to sound to light systems on my disco laods of times.
Look up "sound to light"

 

[DaveM]

I would go for a low pass filter to catch the drum beats.
If you use HF you might get continuous triggers which are too fast for
the strobe.
You dont even need a PIC, just use the output of your filter to drive
the trigger.

I have used to sound to light systems on my disco laods of times.
Look up "sound to light"

You're looking for an old fashioned color organ. Surf over to
http://www.discovercircuits.com/C/color-org.htm and choose the one that suits
the level of your construction ability. Use only the high frequency channel for
the cymbals.
Cheers!!!!
--
Dave M
MasonDG44 at comcast dot net (Just substitute the appropriate characters in the
address)

Life is like a roll of toilet paper; the closer to the end, the faster it goes.