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Eudaimonium

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Ach, I hate that "crown" on the head of the thing.
I like flat ends in head, like Cree C6. Best host ever.
Cheaper too, fits 18650.

One should by this only if access to lathe is possible, to cut off the crown at the exit. It really ruins the whole look. Kind of just gets in your eyes.
 

daguin

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Ach, I hate that "crown" on the head of the thing.
I like flat ends in head, like Cree C6. Best host ever.
Cheaper too, fits 18650.

One should by this only if access to lathe is possible, to cut off the crown at the exit. It really ruins the whole look. Kind of just gets in your eyes.
I totally agree. It also makes it hard to get to the focus ring ;) The alternative is that the heat sink is made to reach out to the front edge and ruin the look of the crown anyway.

@ Randomlugia -- The 14500 battery is fine for our type of lasers.

Peace,
dave
 

Eudaimonium

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I totally agree. It also makes it hard to get to the focus ring ;) The alternative is that the heat sink is made to reach out to the front edge and ruin the look of the crown anyway.

@ Randomlugia -- The 14500 battery is fine for our type of lasers.

Peace,
dave
Yup, EZfocus adapters are impossible here,
Heatsink extruded to dwarf the crown should better be anodized to look professional, in such approach is used.

Either way, not overall good for laser setup. Focus rings are real problemo.
Housing a green in there would be an option, but 14500 battery kind of limits the thing to 150mW green max, as it will draw about 1 A,

Well lower quality 14500 maybe won't even handle that.

Anyhow, you got problems.

Much better off with C6. :D
 
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UltraFire 501b and 502b are among my favorite pocket flashlights.

I wish this light had multiple modes, that way you wont drain you battery on hi.

Runtime: 50 minutes (manufacturer rated)
That's bs. A single 14500 doesn't have near the capacity to power an R2 LED for 50 minutes. Realistically, more like 10-15minutes. This is a mini pocket flashlight, it doesn't need to have 230 lumens. And it only has 1 mode (hi), so you don't have a choice but to drain the battery. It should have 100%, 30%, and 3%. SOS and strobe would be completely useless with this torch.

I would wait for them to release the same torch but with multiple modes. Or, this may sound stupid, but replace the bulb with something with less power. You dont need 230 lumens with something this small.
 

Eudaimonium

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I would wait for them to release the same torch but with multiple modes. Or, this may sound stupid, but replace the bulb with something with less power. You dont need 230 lumens with something this small.
Why not do it yourself?
If you have only basic soldering skill, making a controller circuit for multimode operation is not difficult, provided there is room to install it. Tailcap seems as best option always.

Replacign the emitter yourself is a walk in the park. You of all people should know at least that. :D Your maglite mods in your signature are made by you, I presume?
How come the complains about this stuff then? You can make it no problem.
 
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Why not do it yourself?
If you have only basic soldering skill, making a controller circuit for multimode operation is not difficult, provided there is room to install it. Tailcap seems as best option always.

Replacign the emitter yourself is a walk in the park. You of all people should know at least that. :D Your maglite mods in your signature are made by you, I presume?
How come the complains about this stuff then? You can make it no problem.
Make the board itself? I'm not there yet, I'm taking DC circuitry next semester. Afterwords, I hope I have the knowledge of making a board like that from scratch. And replacing the emitter is really easy. But you would have to use some type of thermal epoxy or glue. Or Thermal grease with some type of clamp. Using regular glue would create a thermal barrier and prevent any heat from dissipating to the heatsink.

For me, as a mini mini pocketlight, I use this:




For quick access, I put it on my keychain, I don't normally have a flashlight on me, but when I need a quick light, I just pull my keys out.

And yes, those Maglites are made by me. But I buy the circuit boards.
 

Eudaimonium

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Make the board itself? I'm not there yet, I'm taking DC circuitry next semester. Afterwords, I hope I have the knowledge of making a board like that from scratch. And replacing the emitter is really easy. But you would have to use some type of thermal epoxy or glue. Or Thermal grease with some type of clamp. Using regular glue would create a thermal barrier and prevent any heat from dissipating to the heatsink.

For me, as a mini mini pocketlight, I use this:




For quick access, I put it on my keychain, I don't normally have a flashlight on me, but when I need a quick light, I just pull my keys out.

And yes, those Maglites are made by me. But I buy the circuit boards.
You don't need any type of course for making boards.

If you can read a schematic, you are good to go, as long as you can weild a soldering iron without pushing it though your nose :D

Just follow a schematic, make your PCB, solder components on it, and do the wiring in the tailcap. Might take some skill and practise with tiny SMD components if you never soldered anything before. Can be tricky.
Make sure get a nice pointy tip for your iron, get a fine 60/40 solder with rosin flux core, and some solder wick. Irreplaceable when doing tiny soldering.

SparkFun Electronics
^very good tutorial I found recently.
You can follow it up, it has 8 pages IIRC, will make you addicted to building stuff in no time :D
 
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Well Im taking DC and maybe AC circuitry anyway. I'm working on my Engineering Masters. Without bragging, I consider myself VERY skilled when wielding a soldering Iron. I can almost read all the symbols for schematics. almost.... but I never built a driver, not because I cant, but because its not really practical, it'll probably be to big to fit inside a 18650 host flashlight.
 

Cyparagon

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It takes at least a 3W LED to give 230 lumens. That means it needs to draw at least 2A from that tiny AA to power it properly. Is that possible?
 
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Cree recently announced a new world record for LED efficiency of 160 lumuns per watt. So theoretically, you can get 480 lumens out of 3 watts!!!!!

but thats only a dream for now
 

Cyparagon

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Cree recently announced a new world record for LED efficiency of 160 lumuns per watt. So theoretically, you can get 480 lumens out of 3 watts!!!!!

but thats only a dream for now
It doesn't work that way. The only way you can get efficiency that high is if you under-run the diodes. That record was likely attained with a very low power.
 




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