key chain laser power supply

[audioguru2]

and yet it all works perfect with no over heating, my friend.

Yes, with only 9V. But your schematic shows two 18V batteries.
+9V and -9V is an 18V battery.
You should draw the single 9V battery or call its terminals +9V and GND. ;D

 

[steven2]

ante with the positive input from one battery and the negative input from the same battery  to the led via resistor which runs through the open or closed relay contacts is just my indication that the laser is lined up with the senser so i never botherd to put any ground as the neg is normally in respect to the ground anyhow, hey it works great uncle ante ha ha ha

 

[audioguru2]

Hi Steven,
I am Uncle Audioguru, you know, the guy with a big skunk that tries to get under my porch.
Ante is the other bad guy! ;D

My neighbour got back from a vacation yesterday. A whole new family of skunks was found under their porch. I have concrete blocks now to keep them out and it works! My poor neighbour.

I tried http://maps.google.com again to try out its "find" function. When I enter my address, it points to my neighbour's house. He, he.
Its satellite photo doesn't get close enough for me to see the hot teen girls across the street in their bikinis. I can see them fine from my bedroom window. Oh, oh. My wifey is saying again, "What are you looking at!" He, he. ;D ;D (We haven't gone to the beach yet)

 

[steven2]

audio guru what is this google maps thing  you can use the keychain laser  circuit to relay to get rid of those skunks by rigging a trap door on end of pipe through the relay so when skunk breaks beam its history, or use big lond pipe filled with oil make sure its all oiled up the insides ,the skunk goes in to smell and taste the chip fryer oil or used cooking oil for its smell then it cant get out so it slips into oil at bottom then drowns

 

[audioguru2]

what is this google maps thing

Click on my link:
http://maps.google.com
Then use the zoom on the left to zoom out to see the whole world. Double-click on a spot to center it then zoom in. Click "satellite" and it shows a photograph. Do an address search. It gets very close for North America and England but Australia and other places don't have fine detail yet.

Here's the jetplane my son spotted: View attachment 37328

 

[ante1]

Hi Dirty Old Man (audioguru),

Have I just been compared with a skunk, or am I just a bad guy? ;D  If you fit a high energy light pointing upwards on your lawn mover and give us your coordinates, we can all see when you are moving your lawn. I bet you will run back and forth on the street edge most of the time!
BTW: you better stay in the bathtub, no beach for you! ;D ;D

 

[audioguru2]

Hi Dirty Old Man (audioguru)

Who, me? Lotsa people say that. ;D

Have I just been compared with a skunk, or am I just a bad guy?

It depends on how long ago you had a bath. Don't you have long hair and ride a noisy motorcycle? ;D

If you fit a high energy light pointing upwards on your lawn mover and give us your coordinates, we can all see when you are moving your lawn.

I don't think it will work. All my LED thingys have a very low duty-cycle to save power, and chances are that the satellite will take my picture during the LED off time. I sold some more of my LED flashers during the fireworks show on Canada Day, so I'll have to make some more for my city's "midnight madness" street party next weekend.

I bet you will run back and forth on the street edge most of the time!

The hot teen girls come over to see me whenever I mow my lawn, to see what else I have made.

BTW: you better stay in the bathtub, no beach for you!

At the beach I can be extra dirty, then the bathtub comes later so I can be squeaky clean for a while. ;D ;D

 

[steven2]

from keychain lasers  to spy maps ooh

 

[audioguru2]

Hi Steven,
My wifey doesn't like it when I light up her, um you know, with my laser pointer! ;D ;D
I'm not dirty enough (yet) to light up other girls.

My laser must be getting dirty. It makes a bright red dot with a dirty line through it. The line rotates when I rotate the laser pointer. I can't reach it because it is behind a metal cover with two small holes for the laser and ultra-bright blue LED beams. Maybe there is a spider or tiny skunk in there. ;D ;D

 

[steven2]

key chain lasers here can be brought for around $5 and they have all these lenses you can use and even they all create all kinds of pictures with the laser, even a cross etc etc and dot and rabbit i have a plastic draw hull of lense attachments that can be used  and i choose to use one attachment that  the the lense fell out of so i get just a strait dot, of which i need and if i put a plastic tube over the transister of the reaceaveing circuit with relay then i can get the laser to shine into it and no other light from the side will get in

 

[hamoodyjamal]

Hey,

I made a project similar to yours but the problem is that i got told of from my parants for using a laser beam. Old folks, what to do! So i switched to Infrared which is much more complicated (as you can see from the "Infrared Activated Switch" topic). It worked like a charm. But i hade to dismantle it and now im working on using infrared. Max distance i achived (testing phase) with the infrared would say is 5 meters. (good for home use).

BTW, You better watch out when using a laser beam outside since there have been reports of lasers blinding the veiw of airplane piolets and those responsible have been arrested.

I once achived 100m with my $1.5 (no bull, thats the average price in my country) laser. It too came with lenses that make shapes. After 1 day of using it, i dismantled it and took out the small PCB with all the stuff and it became like 3cm all together witht he lense. (but no battery). I have a habbit of opening things and taking a look.

LOL, audioguru you wicked man!  ;D

 

[steven2]

it would be hard  to blind someone with my laser as it shines a small bright dot and the pilots  being so high up and in the cockpit and there windows faceing on the top forward half  of the plane and im down on the ground and with such a small red laser dot , and trying to find the small eyes of a pilot from miles below to blind him with a laser dot so small would be hard  unless you are at high sea level and the plane is in front of you in line of sight  and you have a bigger wider laser then you may be lucky then

 

[hamoodyjamal]

Im just saying what i read. BTW, the laser beam doesn't stay focused in long range. the beam becomes wider and wider as distance increases. Even if your in the sky, light will reach you. Especially if its focused like the laser. And the beam fills the cockpit window (i think) with red light. Not literaly blinding the guy. just not making him/her see good.

 

[steven2]

well im not gain enougth to look into the laser even from a long distance away but  i like to hear more of any of your laser exsperiments i have a 3 leg laser i got from old cd unit but i dont know about these nor how much voltage they run off
its like a transistor that has lense window on top and  i dont know anything about this one  its metal to

 

[steven2]

heres another simple keychain laser circuit i made and added some detailes to it and drew a simple printed circuit for it

View attachment 37402

 

[steven2]

here i drew up a simple printed circuit for this second keychain laser power

View attachment 37404

 

[steven2]

thhe 0.1uf capacitor is a tantulum and i forgot to mark the positive end in the printed circuit i drew up which is a bit rougth  ill redo it latter when i actually make the printed circuit board for it

 

[junlabo]

Good morning sir steven,

I would like to ask some facts about the laser pointer key chain.I s it durable? Is it really true it can last for years? Can it stand long hours of work.i.e. its on continously for many hours using youre power supply., lets say 12 hours..?

Please enlightened me on this sir...thank you..

 

[steven2]

ive never had it runing for a long time to be able to tell you hoe dureble it is and unlles i get it all boxed up and tested fully i dont know howlong the power will last but im confident it may last for days

 

[alquilos]

what phototransistor did u used?....