Introduction: Ultimate Social Distance Gadget
I don't think it's necessary to introduce the global situation we are currently living.
First off all, kind of a DISCLAIMER, English is not my first language, mistakes will be made. Secondly I am not a health professional and my knowledge of the current health measures and their effectiveness is very limited if not null and this guide wants to avoid any posible controversy around the topic...That said, bring the craziness.
Well as you probably have already seen in the video, WE ARE SHOOTING A LASER! And even thats nice by itself you may be wandering, WHY? Well, if you look back to the homemade bad quality image...TO KEEP THEM FAR, that's right, lovers of personal space and introverts of the world, time has come of claiming what is our and show them in a clear way we do have a personal space and how big it's.
Now you (kind of) know what we are doing, let's take a look to the supplies you will most likely need to archive this.
-3D PRINTER (Around of 20g of filament, I used PLA any rigid one will do)
-BASIC TOOLS (Screwdriver and pliers )
-SOLDERING IRON (with some solder tin)
-FLANGES (around 10 it you don't break them unnecessarily like me)
-M3x20mm and nut x1
-2mm brass rod (less than 10 cm)
-Cheap laser pointer (They are like 1-2$)
-Famous yellow geared DC motor
- 4 NiMh Batteries and their battery holder
- Some wire
-Old cap (Will be cut so keep that in mind)
ALL THIS COMPONENTS CAN BE CHANGED TO ANY THAT MAKES THE SAME...as you will see the guide is pretty straightforward
Step 1: THE IDEA: Concept
Since everything started some ideas to archive this goal were running through my mind, pretty impossible ones, like wearing a giant ring around you ( good luck with doors ;) ) and similar ones until the I realized the laser was perfect for this job, it can mark something away from you without interfering your movement.
LET'S SEE THE IDEA STEP BY STEP:
Images 1 and 2...so yeah, with my amazing drawing skills you can see that The idea is to build a hat, by mounting in an already existing cap our gadget.
Images 3 and 4, we create a gadget that shoots a laser, sadly that's only a point, BUT if we spin it around our head...we have a circle, nice!
Hopefully people is smart enough to keep out of a laser shooting circle...hopefully
Step 2: THE IDEA: Real Life Plan
Okay so we are going to use 4 NiMH batteries at 1,2 each we have around 4,8V ... good enough for our 5V yellow motor
We will build a platform mounted to the motor that spins around creating the circle (Image 2) BUT we ran into our first problem, we need to angle the laser to achieve the circle radius AND... not everyone has the same heigh.
After some thoughts, we have 2 clear options, Adjust people or adjust the laser, and choosing between a lot of people or 1 laser, yup we choose the laser. So when we design we have to remember to add someway to change the angle of the laser beam, everything else seems right. We have the motor, fix to our cap and it rotates the 3d printed piece that holds the laser and it's able to adjust its angle, nice!
Step 3: DESIGN TIME
After some tinkering in autocad (vid 1), paper would do but you have already seen my drawing skills. So by drawing all the ideas, all the beams for the different heights (by the way, I am considering from 1,5 m to 2m, most population is represented)
Finally I decided to create a kind of lever design that does the following, by changing the height 1cm in one side it goes from the 2m angle to the 1,5 angle. It's not a lot, but I wanted to keep it small and simple and by adding a screw I could easily move in the 1cm space.
I won't go go in much more details as my way of designing is kind of trial and error (I'm still learning)
LET'S GIVE OUR IDEA VOLUME
Moving to fusion 360 with a clear idea of what we want to design I just started making the idea in 3d, As you can see in the final work here: HERE I made some pieces I changed later and I had some mistakes that had to be changed...but I ended with a promising bunch of pieces
Step 4: BUILDING TIME: THE CAP
Skipping the 3d printing part as the parameters are pretty much the standard ones you use in your printer.
NOW: Pick up your not very loved cap and cut the front part as showed, easy, PART 1 done! Was it hard?
Keep it near for later :)
Step 5: BUILDING TIME: THE LASER
You will need the laser, superglue, flanges and the 3d printed pieces:
In the 3d printed pieces image you can se their ID numbers.
Put the laser in the shown piece  and fix the to the flange.
Pick the next piece and using superglue attach to  as shown
Step 6: BUILDING TIME: THE BASE
Take the shown pieces and introduce the bottom one in the upper one as shown, apply some superglue to fix it.
Cut around 7mm of 2mm brass rod and fix the in the previous step piece as shown, apply some superglue and wait until it's fix, if it's not properly fixed, add some paper around the rod, 1 or 2 layers apply the glue and try again.
Finally using the rods as pivots join the laser module with the base
Step 7: BUILDING TIME: ADJUST MECHANISM
Sand a bit the screw show you can insert it in the piece (image 2) as shown and it moves freely.
Insert the nut in the base and glue it.
Prepare a 1.5 cm rod and you may need to apply the paper trick so everything fits better.
Screw the part and into the nut and introduce the rod as shown, bend it show it can't scape its place. (I screwed up with the glue , no pun intended and had to break to put another nut, but it keeps working)
Step 8: BUILDING TIME: MOTOR
Introduce the intermediate piece between the motor and base and later attach the motor and base.(Image1)
Attach the second piece in the oposite part of the motor, you may want to fix it with a screw, the motor has a rind for screws and the piece is prepared for that option, if not, use flanges (Image 2)
CONGRATULATIONS, you hace build the biggest part, you are almost done :)
Step 9: BUILDING TIME: FIXING TO THE CAP
Remember, I told you you were going to need the cap again, it's now.
Place the module in vertical position relative to the cap, and attach as many flanges as you see are needed until the cap and module are fixed.
You can pick the pliers and make holes in the cap for the flanges
Step 10: ELECTRONICS
Easy wiring to do, from the battery holder (-) to one pole of the motor, the battery holder (+) to the switch and from the switch to the other pole of the motor, DONE !
We are keeping the laser on its own for 2 reasons:
- If it works, don't open it if you don't want to break it (I broke 2 laser in the process of making this)
- The wire would roll up wit the motor spinning and the solution is much harder than pressing the laser ON switch every time and later the motor switch
In the video I'm using a pillow as a head simulation, it works as plan, and you can adjust the distance by using the screw, that's all :)
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