SMART JEWELRY BOX
Introduction: SMART JEWELRY BOX
The project includes laser cutting, 3D printing, programming and electronics. I designed and implemented it as a part of a school project. Its outer shell is made with a laser machine, a sorting box for the jewelry is made with a 3D printer, and an electronics section of the work is placed under the false base. In addition, there is a programming section where Micro:bit is programmed with LED lights to select jewelry randomly. Watch the video!
Supplies
* 3D printer (Ultimaker 2+)
+ White PLA filament
* Laser machine
+ Laser plywood 2mm, 4mm
* Sandpaper
+ p240
* Glue
+ Eri Keeper
+ Hot glue
* Surface treatment/finish
* Cold pressed linseed oil
* Osmo Color wood wax, red
* Electronics
* Micro:bit v2
* Sparkfun micro:bit breakout board
* 6 LEDs (5 mm, super bright & warm white, 60 degrees light ankle)
* Sparkfun micro:bit battery holder
+ Two AA-batteries
* Push button (ON-OFF)
* 8 Female to female jumper wire (also male to female works)
* Connecting wire (90 cm)
* (Drilling machine)
* Adjustable wrench
* Caliper
* Ruler/measuring tape
* Electric wire stripper/cutter
* Soldering iron
+ Pewter solder wire
Step 1: Laser Machne
The outer shell of the jewelry box is made with a laser machine. I found a ready-made model on the internet that I modified a bit (the box is downloaded from https://3axis.co/laser-cut-book-box-with-living-hinge-cdr-file/6o3y6zq7/). I changed the image on the cover to another and also wrote a name on it (the flower imagine is downloaded from http://clipart-library.com/clip-art/spring-flowers-silhouette-24.htm).
Download the files and import into Inkscape, first the box. I deleted the original image from the box and then I brought this new flower image into the same file. This image was in pixel format so it needed to be converted to vector format. First select an image as active, then select "path". After that, select "trace the bitmap" and then "implement". Now you have two images. Drag them separately and delete the original image. Now you can resize the image and place it as you wish. Remember, that if you want to cut the image, place it far enough away from the edge. 997
This will make the edge strong enough and you can glue another plywood under the image if you wish. After making all the changes, download the file in SVG-format and then open the file in Lightburn. There check the settings and edit to suit the material (4 mm laser plywood). Then transfer the file to the laser machine (you can see these settings for 4 mm plywood in the image above, change the settings a little bit for 2 mm plywood).
In addition to this, cut 4 other pieces: two pieces for the false bottom (3,3 cm x 13,4cm, 4 mm laser plywood), one piece for silhouettes background (12,3 cm x 17,8 cm, 2 mm laser plywood) and one piece for LED placement (13 cm x 17 cm, 2 mm laser plywood).
You can use the laser machine to make holes for the LEDs and pushbutton, if you want. I made the holes later and I used drilling machine for that. In both ways, measure the diameter of the LEDs and the push button with a caliper to get the right size holes.
Step 2: 3D Printing
The sorting box is made with a 3D printer. You can access the finished file by downloading it from below and opening it in Ultimaker Cura. There check the printing settings, such as printer and material (some settings can be changed, e.g. layer height 0,3 & infill 15% to speed up printing). When the settings are OK, press "slice" and Cura will tell you the estimated print time and the estimated amount of material. If you are using a USB- or SD-card, attach it to your computer and then press "save to disk". Insert the memory card into the 3D printer and select "print" from the main menu. Then select the correct template from the files on the memory card. Printing took about 3 h and 15 min with my settings.
You can also go to Tinkercad to make your own sorting box. To get started, select from the right edge two boxes, one solid and the other hole and drag them to base. 646