Assignment for week two (February 05, 2014)
The second class focused on computer-aided design. Various
      software for 2D and 3D design were covered; together with audio
      and video conversion software.
    
The assignment for the week was to model a possible final
      project, and post it on the student's class page. While playing
      with these designing software, I realised that it was going to be
      an on-going learning exercise. It took me several days to manage
      the FreeCAD installation, and it took even longer to grasp the
      tool. It left me frustrated, so I moved on to the next software.
      Seeing that the assignment was to be completed before the
      following class the next Wednesday; I chose the software I felt
      was easy to learn and to allow me to model and post my final
      project before the next class. The design software in question was
      Sketchup. My first attempt was to read through the tutorial,
      however I realised it was going to take me longer to learn. So, I
      decided to view the video tutorials instead. This was an eye
      opening experience and started enjoying designing. My plan is to
      spend at least an hour or so on each 2D and 3D software tools that
      I have not yet explored. 
    
For my final project, the first stage was to hand sketch the
      system (figure 1). I attempted using google sketchup to make a 3D
      design - which turned out to be rather frustrating. I proceeded in
      engaging one of my collegues, who's experienced in SolidWorks to
      give me a tutorial.    
      
      Figure 1: Potty hand sketch
      
    
SolidWorks enabled me to also take the 3D design apart and get a
      sense of the 2D structure and parts.