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1. 3D Print a ring

1. Show us you can 3D print. Measure one of your fingers, 3D print a simple ring that fits it nicely. Shoot a small video as the 3d print finishes, you grab the object out of the printer and fit your finger, shake your finger, alas, it does not fall because it was properly measured ahead.

Video here. Picture of final ring here.

(tips: you can use the MADD's flashforge red printers that are in the common areas for this part, but we do not recommend it for the next part of the assignment due to low resolution.)

0. Requirements for your wearable

So, we want you to 3D print a functional wearable enclosure that will:

  1. attach to your body (e.g., wrist, biceps, etc.)
  2. host a small coin cell battery circuit that lights up an LED when you press a button
  3. use Ohm's law to figure out if you need a resistor, and if so, use one
  4. use an LED
  5. this is a wearable, so it must attach to your body (i.e., it should be securely held in contact with your skin, like wrist bracelets, anklets, etc.). A choker would be fine, but not a long pendant that would hit you in the face if you did a cartwheel.
  6. the battery must be easily replaceable by the user (full points only if you use a clever 3D printed mechanism to achieve this)
  7. it must withstand the test of .. the cartwheel. i.e., one can shake it and does not fly or open or break.
  8. The button mechanics have to be 3d printed. No buttons allowed. We suggest using copper tape and thinking of how to 3D print a button. Full points only for solutions that print in one piece and use clever 3d printing mechanisms. Button lights up LED on press.
  9. Extra points if: your button can latch. (i.e., one press turns it on, and keeps it on, until you press again = hard)

2. Design your wearable on paper

Upload a sketches showing that:

  1. you designed your wearable first on paper: upload here a technical sketch of your wearable design
  2. a close up of how you expect your button mechanics to work: upload here
  3. close up of your wearable attached to a part of the human body: upload here

Full points only for: hand drawn on paper (zero points for images from web or digitized or rotoscopes) + technical drawings showing dimensions + clarity and carefully drawn.

Hint: your first version won't be good, iterate.

3. 3D print it the enclosure

3.1 Upload your STL here. (No STL no grade)

3.2 Upload video of the final moments of the printing and you getting the object out, then showing it close to the camera in multiple angles.

3.3 Upload at least 3 pictures of close ups of your print.

3.4 Video of device attached to body, shake your body/limb… if it stays on: you get points here. (if you can do a cartwheel, go ahead, we can't).

4. Functional test

Put the circuit together. If you need to solder, solder. If you need cables, solder them. Your button must be 3d printed, we recommend using copper tape. Full points only for clever 3d printed mechanisms.

4.1 Now demo your on/off switch with LED. Video here.

4.2 Bring it to class. Demonstrate and explain the 3d printed mechanics you used for your button and how you can get the battery in and out easily, explain also which mechanism you used for that.

assignment6_template.txt · Last modified: 2019/05/08 01:42 by amfarrell