Process of Install Motor Shield

I and Jiyoon followed the guidance of Adafruit to install motor shield. First of all, prepare electrics and tools.

We broke apart a header and put into the Arduino and assembled the shield on it. 

Unfortunately, we couldn't move on next step.

We need to solder each one of the pins into the shield to make a secure connection, but Jiyoon and I neither have no idea about soldering. We watched a basic soldering tutorial movie, but we were still worried and scared of that.

So we asked Prof. David Hall and then we just stopped before explode and destroy the shield.

He saved our life.

Thank you.

Animation of structure's movement

Even though I failed to use the skeleton tool, I found another way to express the movement that I want. I just move each vertex manually and set some animation.

The reason why I want to use the skeleton tool was to avoid the length that is stretched every time when I move the object.

Movement of structure from Doyeon Kwon on Vimeo.


structure moving2 from Doyeon Kwon on Vimeo.

Making model and problem about skeleton

In the process of attaching the skeleton on my model, I had some problem moving the skeleton and object together.

Maybe the position of the skeleton is not applied right, or skin binding was not processed through the object. I'm confused about folding and unfolding movement by using skeleton tool.  

structure moving problem skeleton from Doyeon Kwon on Vimeo.

I recorded Prof.David's process of how to use the skeleton tool, but it was not clear to me because in Maya I couldn't find the rigid bind. I researched around for some tutorials and references, but I couldn't find the exact answer. It was too difficult to understand the difference between IK/FK handle, joint and spline tool.

Folding structure sketch and paper model

In the middle of the night, I created another structure of my idea to express the moving surface.

I was inspired by the top view of "Dong-Seo-Nam-Buk origami fold" that I previously tested on a real paper. 

Folding structure from Doyeon Kwon on Vimeo.

Projection onto the model 3

MVI 9684 from Doyeon Kwon on Vimeo.

Projection onto the model 2

Line drawing animation using the AfterEffect

Comp 1 from Doyeon Kwon on Vimeo.

Projection onto the model 1

The worst things in this process are

setting the projector and adjusting the place of a model to matching with projection. 

MVI 9638 from Doyeon Kwon on Vimeo.

Experiment of structure

Before making model using 3d program, I drew some sketches and tested the shape and structure.

[Sketches] 

This sketch was inspired by geometric mobile.
The structures are combining the main face every time when it rotate.

Alternatively work structure with 2 cogwheels.
It could be possible to make an object which rotate 2-way by attaching faces on the cogwheels.

This structure is composed of two squares which rotate and move at the same time.
I want to make 3rd sketch among the above things, but when I tried to make that by hand, the back side became too complicated to combine together. In the end, I failed because these faces couldn't support the movement.

For this reason, I just tried to make a simple structure for practice using Pepakura and projection.

For my object, I used 3dsMax program to design it.

Export .obj file and then unfold in Pepakura.

Completed!

inspirational origami structure 02

origami test 002 from Doyeon Kwon on Vimeo.

inspirational origami structure 01

The paper toy called "Dong-Seo-Nam-Buk" that I used to play when I was little.

moving surface 01

short test of moving surface mechanism

Inspirational images

Rotational Sculpture in Red Dot Design Museum, Singapore

Tutorial Lists

• http://www.mechasolution.com/shop/board/list.php?id=tutorial

• http://blog.naver.com/mingi141/220233031077

Requirements

I ordered eletronics for this class with Jiyoon and Sobaek, except motor shield.

Order List

• Arduino Uno (+USB Cable)

• Nema 17 Stepper motor *2

    - Holding Torque: 4.4kg.cm

    - Type: Hybrid
    - Brand name: SmartAutomation
    - Phase: 2
    - Current/Phase: 1.68A
    - Step Angle(degrees): 1.8

• Soldering Iron/Flux/Lead set

• Motor Shield
  

I couldn't order motor shield yet. There's some version of motor shield and I confused what is different among them. The model name is Adafruit Motor/Stepper/Servo Shield

for Arduino v2 Kit - v2.0.