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it never fails to make me smile, this one. notice the clever use of the towel: aFztjgfDWDA

These greens and reds all use standard AAA batteries, even rechargeables: $7.99 - True Green Laser Pen 5mW - Green Lasers $2.62 - Red Laser Point Pen (2xAAA) - Red Lasers $10.90 - 30mW 650nm Red Laser Pointer Pen (2*AAA) - Red Lasers $22.02 - 2-in-1 5mW 650nm Red + 5mW 532nm Green Laser Pen...

At the typical power levels, around 1 Watt, It'll definitely sting you, even when focussed to infinity.... Do you need protection? Well if you keep burning yourself maybe... I'd say no, not like you need for the eyes. Hihi, it does sting...

Labby or pointer? You never mentioned.... So you'd like a member built rather than a Dealextreme or O-like? Your budget? Why don't just build one yourself?:thinking:

I'll give it 20 minutes total runtime before it rolls over and dies.:D:D

DOES. NOT. CoMPUTE. Really, you won't get far building your own if you don't want to solder. That's the basic and easy to learn skill you need for an electronics hobby.

Awww come on, only 24 voters? WTF is wrong with this forum? Is everyone to lazy to click on and read each one of these cool builds with pictures? It only takes you 5 minutes while it took the person who made it an afternoon or two....

Hey there, welcome to the forum!:wave: To help you wade through all the noise, try out the INDEX link in my signature.;)

Just remember that all excess voltage will be burned off as heat by the driver. So if you're only using 6V for the diode, the other ~6V are waste heat at the driver. You will need proper heatsinking, is all. I'm sure you knew that, though, just reminding you.;)

Some people have adressed the issues and got interesting results: LASER POINTER / DIODE HOLOGRAPHY Laser Diodes for Holography Red diode lasers for holography

Good morning! No, that is coffee.

Meh. I have yet to kill a diode from soldering leads onto the pins. Just pre-tin your wire and pins and be quick about it, don't cook the diode for a long time.... And ideally have the diode heatsinked inside it's module when you are soldering on the leads if you are not yet comfortable of...

Well lasersbee, you are detecting a sarcastic undertone where there is none. I said I find his setup pretty impressive, all I am constructively criticizing is the apparently random movement. I know that feeding random numbers into an algorithm is a fun and easy way to get some effects in half a...

I think you all should go easy on him. If his avatar is any indication, it looks like he might be living in a trailer park and maybe he doesn't have such a good education like most of us nerds here on the forum. If he is dyslexic, it might be a huge effort for him to write 99% correct english...

So how come no-one here makes more of these, if they are apparently so simple to make? So basically all I need are high voltage sparks and some tinfoil? Looks like a cool DIY project to me, and it goes on my list of future builds. Thanks for bringing it to my attention.

So the lampshade is like a flower, you turn on the lamp, the bimetal strips warm up and bend outwards to open the lampshade. Turn it off and the strips cool down, contract and close around the bulb. Am I right?

I just filter it and pour it straight into the tank.:D And the motor isn't modified other than fresh injector nozzles and a higher injector opening pressure. IMHO, biodiesel is fail because: -the process requires additionally methanol and some other chemicals I forgot. -you have to input heat...

OK, so I read the LM317 PDF a little and here is the formula Vout = Vref(1+R2/R1)+ Iadj*R2 Vref is 1.25V and Iadj is so small (microAmperes?) that we can ignore it if we pick large enough R1 and R2, so: Vout=1.25(1+R2/R1) Where R1 is between ADJ and OUT and R2 is between ADJ and GND. That's...

You guys are all correct, but he said he doesn't DIY.:confused:

Sorry hak, I just couldn't help it. I restrained myself hard on many occasions, but no the time has come for this: "That word, you keep using it....." It's called lumia. LUMIA. L-U-M-I-A. no "N" to found anywhere near that word.:na: Have a nice day.:)