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Posted: 1/25/2015 6:22:25 PM EDT
Had a half hour to kill today so I prototyped a few different IR flashers and IR adjustable brightness circuits (not shown). Ofc I used red less since it's day time. It's still a work in progress as eventually I'm going to make little project cases for these and use them as strobes. Hope you like and any suggestions please tell. |
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Great idea for DIY projects.
Many LED flasher ICs are available. If I were making some, I would buy high quality capacitors for it. Good ones are not expensive. That is the part likely to fail with age or due to temperature extremes. I buy my components from Digikey and Mouser (mostly). There is no minimum order, and shipping is fast and reasonable. BTW, the invisible 980/990 nm LEDs work just fine with all of my NV stuff, even though the NV specs indicate that 880-ish nm is the upper limit. So, if you want to avoid the visible red glow from your flasher, you might wish to give those a try. And, for what it's worth, your cell phone camera can probably see the IR. With that method you don't have to hide in the dark closet with NVG to confirm it works. Haji and others use cell phones and digital cameras/video cameras to see IR light sources approaching. |
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The ones I have don't glow red so they must be really up in there. Soldered a board up right quick and it's a winner. Totally stoked to keep coming up w better designs and brighter strobe. The idea I guess is to have a few of these around when hunting that each person wears on their helmet so crossfire etc isn't an issue if we decide to split a canyon or one on the car so we can find our way back. I know plenty of companies make things similar to this but this one cost me like 2 bucks or so to make. the one I made today wasn't annoyingly bright and gave a steady 3 second delay between pulses. I have a higher power 4 led diode I'm gonna throw 18v on it in an attempt to make a night vision flash bang style ir device.
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Quoted: Had a half hour to kill today so I prototyped a few different IR flashers and IR adjustable brightness circuits (not shown). Ofc I used red less since it's day time. It's still a work in progress as eventually I'm going to make little project cases for these and use them as strobes. Hope you like and any suggestions please tell. 2n6027 PUT 2.2 uf cap The resistors if you're looking at the bread board: Top left 470k Bottom left 15k Right 27k The led I had sitting around from a buy of lots of different IR heads. I think it's used for a flashlight, check china shops for cheap shit like that.
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Quoted: interesting i tried something like this a while back but didnt get too far. i was looking at some thing like this with a switch to be able to program different strobe patterns. http://www.laureanno.com/RC/picaxe-miniflasher.html I had a lot of fun using a relay to do the switching but it was WAY to loud. I switched over to a PUT with an amp circuit but am diagnosing a leak somewhere that is keeping the LED lit in between strobes. I'll get back to the project later this week and when I'm 100% satisfied I'll post up the easy to follow breadboard for you all to copy. ETA: I looked at his schematic. He don't amp like I amp. I AMP LIKE A CHAMP, lol. That's not a very hard project to complete, you should revisit it if you're interested. Do it on an arduino then program the ATMEGA chip yourself using a click type interface that allows you to click through the modes you want. |
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https://www.google.com/search?q=led+flasher&biw=1366&bih=625&tbm=isch&tbo=u&source=univ&sa=X&ei=x1DOVMyhB5L3oASW-ILwDQ&sqi=2&ved=0CE8QsAQ&dpr=1#imgdii=_&imgrc=HEkgS6sZDHqaYM%253A%3BZcU-3VSropqsKM%3Bhttp%253A%252F%252Fjasonacox.com%252Fimages%252Fsimple-flasher.jpg%3Bhttp%253A%252F%252Fwww.jasonacox.com%252Fwordpress%252F%253Fp%253D47%3B237%3B257
The above is about as simple a flasher as one can find, not very bright though. |
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Quoted: https://www.google.com/search?q=led+flasher&biw=1366&bih=625&tbm=isch&tbo=u&source=univ&sa=X&ei=x1DOVMyhB5L3oASW-ILwDQ&sqi=2&ved=0CE8QsAQ&dpr=1#imgdii=_&imgrc=HEkgS6sZDHqaYM%253A%3BZcU-3VSropqsKM%3Bhttp%253A%252F%252Fjasonacox.com%252Fimages%252Fsimple-flasher.jpg%3Bhttp%253A%252F%252Fwww.jasonacox.com%252Fwordpress%252F%253Fp%253D47%3B237%3B257 The above is about as simple a flasher as one can find, not very bright though. That's because it's only amped once. Put a few more amps (three I think may be the max for the transistor before it over saturates) and it will be brighter. ETA not even once. He's using the transistor as a switch. |
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Quoted:
That's because it's only amped once. Put a few more amps (three I think may be the max for the transistor before it over saturates) and it will be brighter. ETA not even once. He's using the transistor as a switch. Quoted:
Quoted:
https://www.google.com/search?q=led+flasher&biw=1366&bih=625&tbm=isch&tbo=u&source=univ&sa=X&ei=x1DOVMyhB5L3oASW-ILwDQ&sqi=2&ved=0CE8QsAQ&dpr=1#imgdii=_&imgrc=HEkgS6sZDHqaYM%253A%3BZcU-3VSropqsKM%3Bhttp%253A%252F%252Fjasonacox.com%252Fimages%252Fsimple-flasher.jpg%3Bhttp%253A%252F%252Fwww.jasonacox.com%252Fwordpress%252F%253Fp%253D47%3B237%3B257 The above is about as simple a flasher as one can find, not very bright though. That's because it's only amped once. Put a few more amps (three I think may be the max for the transistor before it over saturates) and it will be brighter. ETA not even once. He's using the transistor as a switch. It is called a "relaxation oscillator". |
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Quoted: Not sure what you are saying? It is called a "relaxation oscillator". Quoted: Quoted: Quoted: https://www.google.com/search?q=led+flasher&biw=1366&bih=625&tbm=isch&tbo=u&source=univ&sa=X&ei=x1DOVMyhB5L3oASW-ILwDQ&sqi=2&ved=0CE8QsAQ&dpr=1#imgdii=_&imgrc=HEkgS6sZDHqaYM%253A%3BZcU-3VSropqsKM%3Bhttp%253A%252F%252Fjasonacox.com%252Fimages%252Fsimple-flasher.jpg%3Bhttp%253A%252F%252Fwww.jasonacox.com%252Fwordpress%252F%253Fp%253D47%3B237%3B257 The above is about as simple a flasher as one can find, not very bright though. That's because it's only amped once. Put a few more amps (three I think may be the max for the transistor before it over saturates) and it will be brighter. ETA not even once. He's using the transistor as a switch. It is called a "relaxation oscillator". Relaxation oscillator will be what I name my first blow job machine. I may have time to fiddle with it tomorrow before work and give you a few pics if you have any suggestions to help the project along.
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Quoted:
Relaxation oscillator will be what I name my first blow job machine. I may have time to fiddle with it tomorrow before work and give you a few pics if you have any suggestions to help the project along. Quoted:
Quoted:
Quoted:
Quoted:
https://www.google.com/search?q=led+flasher&biw=1366&bih=625&tbm=isch&tbo=u&source=univ&sa=X&ei=x1DOVMyhB5L3oASW-ILwDQ&sqi=2&ved=0CE8QsAQ&dpr=1#imgdii=_&imgrc=HEkgS6sZDHqaYM%253A%3BZcU-3VSropqsKM%3Bhttp%253A%252F%252Fjasonacox.com%252Fimages%252Fsimple-flasher.jpg%3Bhttp%253A%252F%252Fwww.jasonacox.com%252Fwordpress%252F%253Fp%253D47%3B237%3B257 The above is about as simple a flasher as one can find, not very bright though. That's because it's only amped once. Put a few more amps (three I think may be the max for the transistor before it over saturates) and it will be brighter. ETA not even once. He's using the transistor as a switch. It is called a "relaxation oscillator". Relaxation oscillator will be what I name my first blow job machine. I may have time to fiddle with it tomorrow before work and give you a few pics if you have any suggestions to help the project along. 
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