RE: [H] Weird one for you...
A, one second interval is more like it. RadioShack: Catalog #: 276-036 Specs are limited. AKA: F336HD (Obsolete component) http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&category%5Fname=CT LG%5F011%5F006%5F002%5F000&product%5Fid=276%2D036# http://www.datasheetarchive.com/semiconductors/specsheet.php?specsheet=73979 8 F336HD Applications: http://members.aol.com/dswart/tables.html Some empirical test data using this LED. http://www.edn.com/archives/1997/060597/12di_07.htm http://www.edn.com/archives/1997/112097/24di_04.htm You may have to 'cherry pick' from a few of these to get one close to your blink-rate preference. Closest thing I could find to a spec says anywhere from 0.5 to 3.0 Hz is to be expected. Other possibilities: http://www.mouser.com/catalog/623/53.pdf http://www.newark.com/product-details/text/catalog/80671.html (Rated 5 to 12V, but may work at 3V) Lumex (Digikey): SSL-LX5093BHD Specs are sketchy. http://wolfstone.halloweenhost.com/HalloweenTech/anebuy_BuyLEDEyes.html http://www.vishay.com/docs/83000/83000.pdf Gee! Real specifications. http://www.vishay.com/leds/list/product-83000/ http://www.datasheetcatalog.com/microelectronics/19/ _jim -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of joeuser Sent: Sunday, August 28, 2005 3:14 PM To: The Hardware List Subject: Re: [H] Weird one for you... inline... nobozoz wrote: > How badly do you want/need this? Be nice to have one... but something will come along... > > The problem really boils down to the one minute flash period. There are > plenty of LEDs with fixed timing between 0.5 Hz and 2 Hz +/-25% flash rate - > they're everywhere. Very much slower than this and you are talking about a > much smaller market coupled with more expensive timing components like CMOS > counters, large capacitors (C > 1 uF) and large resistance values. And, you > want it to be power-efficient as well. I'm sorry I meant to write one second flashes... or thereabouts. > > I can see something like a small circuit board with 3 to 7 components > (including the LED of your choice) and an external battery holder with wire > leads. Yeah. > > Price-wise, maybe $10 to $60 in pre-designed kit form depending on how close > to your performance expectations you can afford. I suppose the cost would change based on the flash requirement? > > I could probably design & build one of these myself out of stuff from > RadioShack and my garage, but I don't have the time. I just want to buy one pre made. -- Cheers, joeuser (still looking for the 'any' key)
Re: [H] Weird one for you...
inline... nobozoz wrote: How badly do you want/need this? Be nice to have one... but something will come along... The problem really boils down to the one minute flash period. There are plenty of LEDs with fixed timing between 0.5 Hz and 2 Hz +/-25% flash rate - they're everywhere. Very much slower than this and you are talking about a much smaller market coupled with more expensive timing components like CMOS counters, large capacitors (C > 1 uF) and large resistance values. And, you want it to be power-efficient as well. I'm sorry I meant to write one second flashes... or thereabouts. I can see something like a small circuit board with 3 to 7 components (including the LED of your choice) and an external battery holder with wire leads. Yeah. Price-wise, maybe $10 to $60 in pre-designed kit form depending on how close to your performance expectations you can afford. I suppose the cost would change based on the flash requirement? I could probably design & build one of these myself out of stuff from RadioShack and my garage, but I don't have the time. I just want to buy one pre made. -- Cheers, joeuser (still looking for the 'any' key)
RE: [H] Weird one for you...
How badly do you want/need this? The problem really boils down to the one minute flash period. There are plenty of LEDs with fixed timing between 0.5 Hz and 2 Hz +/-25% flash rate - they're everywhere. Very much slower than this and you are talking about a much smaller market coupled with more expensive timing components like CMOS counters, large capacitors (C > 1 uF) and large resistance values. And, you want it to be power-efficient as well. I can see something like a small circuit board with 3 to 7 components (including the LED of your choice) and an external battery holder with wire leads. Price-wise, maybe $10 to $60 in pre-designed kit form depending on how close to your performance expectations you can afford. I could probably design & build one of these myself out of stuff from RadioShack and my garage, but I don't have the time. Good luck, _jim -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of joeuser Sent: Sunday, August 28, 2005 6:20 AM To: The Hardware List Subject: Re: [H] Weird one for you... inline... nobozoz wrote: > This is just about the simplest circuit I've run across: > http://www.uoguelph.ca/~antoon/circ/ledflash.htm > > It's not terribly power efficient, but it is supposed to run on only a > single AA (1.5V). > > Are you willing to build your own circuit to get the 1 second rep-rate? Not really. I'm sure these are available pre built. > > Is only 1 AA acceptable? > Yes but I want to not have to change the battery very often. > Does the LED need to be especially bright (like visible in bright sunlight)? > No not that bright. It should catch the eye in regular room lighting. -- Cheers, joeuser (still looking for the 'any' key)
Re: [H] Weird one for you...
inline... nobozoz wrote: This is just about the simplest circuit I've run across: http://www.uoguelph.ca/~antoon/circ/ledflash.htm It's not terribly power efficient, but it is supposed to run on only a single AA (1.5V). Are you willing to build your own circuit to get the 1 second rep-rate? Not really. I'm sure these are available pre built. Is only 1 AA acceptable? Yes but I want to not have to change the battery very often. Does the LED need to be especially bright (like visible in bright sunlight)? No not that bright. It should catch the eye in regular room lighting. -- Cheers, joeuser (still looking for the 'any' key)
RE: [H] Weird one for you...
This is just about the simplest circuit I've run across: http://www.uoguelph.ca/~antoon/circ/ledflash.htm It's not terribly power efficient, but it is supposed to run on only a single AA (1.5V). Are you willing to build your own circuit to get the 1 second rep-rate? Is only 1 AA acceptable? Does the LED need to be especially bright (like visible in bright sunlight)? _jim -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of joeuser Sent: Thursday, August 25, 2005 9:37 PM To: The Hardware List Subject: [H] Weird one for you... I'm looking for a red LED that flashes about once a minute and is powered by 2 AA batteries. I got one from a display box that was used for a web camera or something. It's on a pretty small board. I'd like something just like it. Where do you find something like this? -- Cheers, joeuser (still looking for the 'any' key)
Re: [H] Weird one for you...
Hosfelt has a red blinking LED for $.55 each: http://www.hosfelt.com/en-us/dept_214.html but I doubt the interval is one minute. They also have a Dual Color Bright Green/Blinking Red LED depending upon the polarity, for $1.49 Vince
Re: [H] Weird one for you...
Thanks! joeuser wrote: I'm looking for a red LED that flashes about once a minute and is powered by 2 AA batteries. I got one from a display box that was used for a web camera or something. It's on a pretty small board. I'd like something just like it. Where do you find something like this? -- Cheers, joeuser (still looking for the 'any' key)
Re: [H] Weird one for you...
Yup, I had one also. My son got to that before I could. warpmedia wrote: The Pink Floyd "Pulse" album came with one of these. =) joeuser wrote: I'm looking for a red LED that flashes about once a minute and is powered by 2 AA batteries. I got one from a display box that was used for a web camera or something. It's on a pretty small board. I'd like something just like it. Where do you find something like this? -- Cheers, joeuser (still looking for the 'any' key)
RE: [H] Weird one for you...
> The Pink Floyd "Pulse" album came with one of these. =) > Only when it was first released I think, not any more. Have to admit, that was what I thought of first when joeuser asked :)
RE: [H] Weird one for you...
Here are some circuits: http://circuitos.tripod.cl/schem/r15.gif http://ourworld.compuserve.com/homepages/Bill_Bowden/page10.htm#15flash.gif http://electronicsworld.tripod.com/lightsimages/lightsckt1.html There are tons more. The last one uses a 555 timer chip. It looks at first glance to be the best of the three above. Bobby -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bobby Heid Sent: Friday, August 26, 2005 7:41 AM To: 'The Hardware List' Subject: RE: [H] Weird one for you... I have seen these for sale for telescopes so that you know where tripod legs are and what not. If you can not find any, they should be pretty easy to build with a minimum of components. Bobby -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tony Antoniou Sent: Friday, August 26, 2005 4:56 AM To: 'The Hardware List' Subject: RE: [H] Weird one for you... You can buy a flashing LED which requires nothing more than just power being applied to it. Check out your local Radio Shack for one. The circuit is actually inside the LED lens itself making it the best solution. Adios, Tony --- TAMA - The Strongest Name in Drums --- -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of joeuser Sent: Friday, 26 August 2005 2:37 To: The Hardware List Subject: [H] Weird one for you... I'm looking for a red LED that flashes about once a minute and is powered by 2 AA batteries. I got one from a display box that was used for a web camera or something. It's on a pretty small board. I'd like something just like it. Where do you find something like this? -- Cheers, joeuser (still looking for the 'any' key)
RE: [H] Weird one for you...
I have seen these for sale for telescopes so that you know where tripod legs are and what not. If you can not find any, they should be pretty easy to build with a minimum of components. Bobby -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tony Antoniou Sent: Friday, August 26, 2005 4:56 AM To: 'The Hardware List' Subject: RE: [H] Weird one for you... You can buy a flashing LED which requires nothing more than just power being applied to it. Check out your local Radio Shack for one. The circuit is actually inside the LED lens itself making it the best solution. Adios, Tony --- TAMA - The Strongest Name in Drums --- -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of joeuser Sent: Friday, 26 August 2005 2:37 To: The Hardware List Subject: [H] Weird one for you... I'm looking for a red LED that flashes about once a minute and is powered by 2 AA batteries. I got one from a display box that was used for a web camera or something. It's on a pretty small board. I'd like something just like it. Where do you find something like this? -- Cheers, joeuser (still looking for the 'any' key)
RE: [H] Weird one for you...
You can buy a flashing LED which requires nothing more than just power being applied to it. Check out your local Radio Shack for one. The circuit is actually inside the LED lens itself making it the best solution. Adios, Tony --- TAMA - The Strongest Name in Drums --- -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of joeuser Sent: Friday, 26 August 2005 2:37 To: The Hardware List Subject: [H] Weird one for you... I'm looking for a red LED that flashes about once a minute and is powered by 2 AA batteries. I got one from a display box that was used for a web camera or something. It's on a pretty small board. I'd like something just like it. Where do you find something like this? -- Cheers, joeuser (still looking for the 'any' key)
Re: [H] Weird one for you...
The Pink Floyd "Pulse" album came with one of these. =) joeuser wrote: I'm looking for a red LED that flashes about once a minute and is powered by 2 AA batteries. I got one from a display box that was used for a web camera or something. It's on a pretty small board. I'd like something just like it. Where do you find something like this?
[H] Weird one for you...
I'm looking for a red LED that flashes about once a minute and is powered by 2 AA batteries. I got one from a display box that was used for a web camera or something. It's on a pretty small board. I'd like something just like it. Where do you find something like this? -- Cheers, joeuser (still looking for the 'any' key)
