# 11. Mechanical design / Machine design

## Midterm review

>    Prepare for global evaluation by having your local instructor
      review your preceding assignments and final project site

- Ready for global evaluation -> 2 assignment completed
- Instructor review your status
- if student have site of final project
- everybody got checked

## Mechanical Design

### Group Assignment
>   - design a machine that includes mechanism+actuation+automation+application  
>   - build the mechanical parts and operate it manually  
>   - document the group project and your individual contribution  


- mechanism: parts that move relative to each other
- actuation: something that can make it move
- automation: intelligence that coordinates the motion
- application: it does something there's a purpose. it can't just be motion there has to be a reason for it.


## Machine Design

### Group Assignment
>   - actuate and automate your machine  
>   - document the group project and your individual contribution


### Assessment

[Assessment](https://fabacademy.org/2022/nueval/mechanical_design,_machine_design.html)



## ToDo

### Urumbu

[Urumbu](https://gitlab.cba.mit.edu/neilg/urumbu)

### Group page

- Where to document Machine project group page
    - [Dilijan Fab Lab (Dilijan, Armenia)](https://fabacademy.org/2022/labs/dilijan/Armania)
    - [Fab Lab Kannai (Yokohama, Japan)](https://fabacademy.org/2022/labs/kannai/)
- Add the link to group page in lab site's top page

### Slide & Video

#### Slide
>  Made your slide> 1920 x 1080 pixels with your name, project name, Fab Lab name, a photo/render/sketch of your project, a brief description of what your project is/does

#### Video
> Made a ~1 minute (10MB/1080p) video of you explaining your project

[ffmpeg](http://academy.cba.mit.edu/classes/computer_design/video.html)
```
HTML5 MP4 ffmpeg encoding

variable bit rate 1080p MP3:

   ffmpeg -i input_video -vcodec libx264 -crf 25 -preset medium -vf scale=-2:1080 -acodec libmp3lame -q:a 4 -ar 48000 -ac 2 output_video.mp4

fixed bit rate 1080p MP2:

   ffmpeg -i input_video -vcodec libx264 -b:v 1000k -vf scale=-2:1080 -acodec mp2 -b:a 256k -ar 48000 -ac 2 output_video.mp4
```