# Lab 10 – 3D Modeling

Date: April 21, 2017

Course: Interaction Lab

Instructor: Moon

Teammate: Esther

Assignment:

Using Tinkercad, design a 3D model of a wearable device, a game controller or a security camera that utilizes one of the following components or equipment: Accelerometer/ 4 Digit Display /Thumb Joystick/ Stepper Motor/ Logitech Webcam. Your model has to be 3D printable and must be able to hold or support one of the pieces listed above. In order to create a precise mount or connector, you must check the datasheet of the component or equipment to find the correct dimensions. Students can also take measurements using venier calipers if a data sheet with part dimensions is unavailable.

Exercise:

Considering what we are going to do for the final project, we chose Logitech Webcam as the main equipment to utilize. We want to create a simple yet good-looking cubic robot model that holds the webcam so that it could detect its environment.

My first step was to check out the webcam. http://ima.nyu.sh/equip/equip-items/logitech-hd-pro-webcam-02/ After reviewing the equip documentation blog, I did not find size information, so I used venier calipers to get the measurements. It is roughly 50mm in length, 28mm in height, and 35mm in width. We decided to make the box a 90*90*90mm cube.

I drew one big solid cube on screen first and then add another smaller cuboid to represent the position of the webcam. I managed to adjust the radius of the angle to make it look better. Sometimes the grouping process can be quite tricky, because from one angle you see the two items are perfectly aligned, but from another angle they are actually staggered, so it is important to check from different perspectives.

As I got more sense of the Tinkercad’s design interface, I began to think about how to make the cube hollowed out so that it functions as a real box for containing purpose. To make the inside of the box visible, I set the biggest cube as “hollow” so we can see better its internal structure. I duplicated the cube and translated it into a smaller one with the same center point, just like the figures shown below. I also added another hollow on the back of the box for USB exit.

I felt it is quite hard to get accurate 3D modeling through Tinkercad, and wondered how people have designed complicated models, like those cartoon characters I saw last week during the Autodesk field trip. So I went online to search the 3D modeling of Totoro on Tinkercad blog, one of my favorite characters from Hayao Miyazaki’s animated films.

It is indeed super..super… complicated…… The use of hollows in 3D modelling design is really amazing!

Equipment: