WTB: strobe disc-light

prooptiki · 6th May 2011, 03:27 PM

I want to buy a keystrobe disc & light 50HZ
Thanks

pjanda1 · 6th May 2011, 05:28 PM

This light couldn't be much easier to build. Mine took about $5 and less than an hour. I used a thrift store transformer and crammed the whole thing into an old DIN plug. As he says, you can use excel to make a disc.

Vinyl Asylum: Simple Strobe using LED by Mark Kelly

Vinyl Asylum - No diagram - Mark Kelly, August 10, 2006 at 06:12:53

Vinyl Asylum: 60 Hz disc by Mark Kelly

Paul
Wild Burro Audio Labs - DIY Full Range Speakers

Conrad Hoffman · 6th May 2011, 05:57 PM

If you want to try something easily available, download my arc template generator. It also prints out 50 and 60 Hz strobe disks at any scale you like. The quality is way better than images, since it generates the pattern locally. It's even better if you use photo paper to print it. I'm not sure how stable the line is where you live, but in many places the use of a quartz stabilized light is a bit pointless. In other places it makes a lot of sense. It takes more time but you can double check using 50 or 100 revolutions and timing with a stopwatch.

quadtech · 7th May 2011, 11:31 AM

Here are a couple of LED strobe circuits - your choice of quartz or
mains driven -

Very simple LED strobe - AudioKarma.org Home Audio Stereo Discussion Forums

http://h-6.abload.de/img/stobe-zd75k6bv.jpg

prooptiki · 13th May 2011, 10:46 PM

Quote:

Originally Posted by pjanda1

This light couldn't be much easier to build. Mine took about $5 and less than an hour. I used a thrift store transformer and crammed the whole thing into an old DIN plug. As he says, you can use excel to make a disc.

Vinyl Asylum: Simple Strobe using LED by Mark Kelly

Vinyl Asylum - No diagram - Mark Kelly, August 10, 2006 at 06:12:53

Vinyl Asylum: 60 Hz disc by Mark Kelly

Paul
Wild Burro Audio Labs - DIY Full Range Speakers

Thanks for your help!
Mark Kelly's simple strobe works better than videos image

YouTube - simple stroboscope light !

pjanda1 · 14th May 2011, 09:52 PM

No problem!

Paul
Wild Burro Audio Labs - DIY Full Range Speakers

stokessd · 15th May 2011, 02:06 AM

Not To toot my own horn too much, but I've had a strobe disk up on my website for like 13 years:

http://quadesl.com/pdf/strobe.pdf

Print, cut, and go

quadtech · 15th May 2011, 09:49 AM

Thanks, Sheldon.
How did you generate the disk?

There's an interesting postscript program I found here -

Re: Strobe circle

The postscipt program above can be modified for 50hz
using the strobe icon count formula on Sheldon's disk
(or here -
HOW STROBES WORK AT KABUSA.COM
)

50 hz 33.33 rpm - change t33 to 90.

For 45RPM, in 50Hz the exact number of strobe dots is not
an integer number.
An approximation is to set t45 to 133, giving
45.1127 rpm

Thomas Giz · 16th May 2011, 05:04 AM

Less fancy solution.
If you have an Ipod Touch. Get frequency generator app, connect Ipod to to amp. Then LED to amp speaker output. Pure fun.... :-)

prooptiki · 16th May 2011, 09:25 PM

One more-blue led

YouTube - simple strobe light

6th May 2011, 03:27 PM	#1
prooptiki diyAudio Member Join Date: Feb 2006 Location: Ioannina	WTB: strobe disc-light I want to buy a keystrobe disc & light 50HZ Thanks

6th May 2011, 05:57 PM	#3
Conrad Hoffman diyAudio Member Join Date: Mar 2007 Location: Canandaigua, NY USA	If you want to try something easily available, download my arc template generator. It also prints out 50 and 60 Hz strobe disks at any scale you like. The quality is way better than images, since it generates the pattern locally. It's even better if you use photo paper to print it. I'm not sure how stable the line is where you live, but in many places the use of a quartz stabilized light is a bit pointless. In other places it makes a lot of sense. It takes more time but you can double check using 50 or 100 revolutions and timing with a stopwatch. __________________ I used to be an audiophool like you but then I took an arrow to the knee.

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6th May 2011, 05:28 PM	#2
pjanda1 diyAudio Member Join Date: Jan 2005 Location: The Nebraska Panhandle	This light couldn't be much easier to build. Mine took about $5 and less than an hour. I used a thrift store transformer and crammed the whole thing into an old DIN plug. As he says, you can use excel to make a disc. Vinyl Asylum: Simple Strobe using LED by Mark Kelly Vinyl Asylum - No diagram - Mark Kelly, August 10, 2006 at 06:12:53 Vinyl Asylum: 60 Hz disc by Mark Kelly Paul Wild Burro Audio Labs - DIY Full Range Speakers

7th May 2011, 11:31 AM	#4
quadtech diyAudio Member Join Date: Oct 2007	Here are a couple of LED strobe circuits - your choice of quartz or mains driven - Very simple LED strobe - AudioKarma.org Home Audio Stereo Discussion Forums http://h-6.abload.de/img/stobe-zd75k6bv.jpg

14th May 2011, 09:52 PM	#6
pjanda1 diyAudio Member Join Date: Jan 2005 Location: The Nebraska Panhandle	No problem! Paul Wild Burro Audio Labs - DIY Full Range Speakers

15th May 2011, 02:06 AM	#7
stokessd diyAudio Member Join Date: Nov 2002 Location: Fort Wayne, IN	Not To toot my own horn too much, but I've had a strobe disk up on my website for like 13 years: http://quadesl.com/pdf/strobe.pdf Print, cut, and go

15th May 2011, 09:49 AM	#8
quadtech diyAudio Member Join Date: Oct 2007	Thanks, Sheldon. How did you generate the disk? There's an interesting postscript program I found here - Re: Strobe circle The postscipt program above can be modified for 50hz using the strobe icon count formula on Sheldon's disk (or here - HOW STROBES WORK AT KABUSA.COM ) 50 hz 33.33 rpm - change t33 to 90. For 45RPM, in 50Hz the exact number of strobe dots is not an integer number. An approximation is to set t45 to 133, giving 45.1127 rpm

16th May 2011, 05:04 AM	#9
Thomas Giz diyAudio Member Join Date: Feb 2003 Location: CA	Less fancy solution. If you have an Ipod Touch. Get frequency generator app, connect Ipod to to amp. Then LED to amp speaker output. Pure fun.... :-)

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