I will show you how to make an instructables watch which contains a a burning laser,
Best of all, this is an extremly cheap project. I was impressed by the quality of my own for the price i paid for these materials.
This is inspired by the 007 laser watch that was worn by James Bond .
***DO NOT POINT LASER AT ANY LIVING THING***
***ALWAYS WEAR LASER SAFTEY GLASSES WHEN OPERATING A LASER***
Step 1: MATERIALS
(1) Cheap watch(preferably plastic)- Got mine at the local McDonalds, but available at dollar stores too. (58cents)
(1) 5mw laser(any kind)- Walmart,Walgreens or Petsmart (about $2-6 depending on the type of laser)
wire (doesnt matter the brand or type, just plain wire)-Radio Shack($3)
(1) slide switch( any one will do)-Radio Shack(80cents)
A soldering iron
A3v button cell battery
super glue/hot glue/epoxy
Step 2: GUT THE WATCH
Then take out the paper that was in the plastic cover.
You will be replacing it with the instructables logo in the next step.
Do not throw out the paper, you will need it as a template for the following step.
Step 3: PRINTING THE LOGO
You can use the previous paper in the watch as a template.
then install the logo under the glass.
Step 4: GUTTING THE LASER
****WHEN YOU DO THIS, MAKE SURE TO NOT BREAK ANY OF THE COMPONENTS!! BE CAREFUL!****
First, you will unscrew the bottom cap of the laser and take out the button cell batteries.
Then unscrew the top lens if your laser contains one.
Next, take pliers and carefully twist the top of your laser until it becomes free from the housing.
Step 5: WIRING IT UP
This step requires:
3v button cell
OK SO FIRST TAKE THE LASER INSIDE AND LOCATE THE MOMENTARY SWITCH( MAKE NOTE ON WHERE THE POS/NEG LEADS ARE IN THE CIRCUT BOARD).
THEN TAKE YOUR SOLDERING IRON AND DE-SOLDER THE MOMENTARY SWITCH.
THEN SOLDER ON YOUR SLIDE SWITCH WITH WIRE(WHERE THE OLD SWITCH WAS.)
AFTER THAT, CONNECT SOME WIRE TO THE POSITIVE AND NEGATIVE LEADS OF YOUR LASER, THEN CONNECT THOSE TO THE 3 VOLT BUTTON CELL BATTERY.
Step 6: MAKING IT BURN!
First, you need to get your gutted laser.
Then, you need a micro screwdriver( maybe just a small phillips screwdriver)
After that, you need to locate the voltage regulator on your laser,( in this case it is a very small screw on the laser.)
Take your screwdriver and tighten the screw to the right
***DO NOT OVER TIGHTEN THE SCREW****
Tightening the screw to the right will increase the voltage output which will enable the laser to burn.
Tightening the screw to the left will decrease the voltage output which will make the laser beam weaker
The thing i like about this feature is that you can change if you want it to burn. for instance if you dont want it to burn, just tighten it to the left and vice versa.
Step 7: PUTTING IT INTO THE WATCH
First, use a dremel or a knife to sand down one of the edges of your watch, so your slide switch is sticking out of the edge of the watch for easy access./(you can see in the picture how i did it.)
next find a good spot in you watch to house your laser., then drill a small hole for the laser beam to go through.
then find a good spot to put the button cell.
you might have to use a dremel to make room for all of your components
then, if you want, you can glue all of your components so they dont move around.
lastly put your whole watch back together!!!!!
Step 8: YOUR FINISHED
When you slide your slide switch, the laser should activate if properly soldered.
This laser easily lights a match, pops a balloon and ignites a firework.
Have fun with your new laser watch but most importantly BE SAFE!!!!!!!
Comments are always welcome, please ask questions, ill respond within 12 hours.