DC supplies: mostly 12V

• Design of everyday things, ch. 1

  • 2 important characteristics of good design:
    • discoverability: Is it possible to figure out what actions are possible?
    • understanding: what does it mean?
  • We must design our machines on the assumption that people will make errors.
  • People themselves are often unaware of their true needs, even unaware of the difficulties they are encountering.
  • 6 principles of interaction:
    • affordance: what actions are possible e.g. chairs afford lifting == these chairs can be carried by a strong person. Affordance is jointly determined by the qualities of the object and the abilities of the agent that is interacting.
    • signifiers : communicate where the action should take place
    • mapping
    • feedback: must be prioritized
    • conceptual models
    • constraints??
  • System image & Conceptual models
  • paradox of technology: the same technology that simplifies life by providing more functions in each device also complicates life by making the device harder to learn, harder to use.
  • the design challenge: collaboration between multiple disciplines

• Emotional Design, ch.1

  • Happy people are better at creative thinking and brainstorming
  • Three levels of processing: visceral, behavioral, and reflective
  • top-down & bottom-up behavior
  • negative effect: makes you focus upon the problem and deal with the danger
  • positive effect: makes you prefer the big picture.
  • How to evoke emotions?
  • One cannot design something that will appeal to everyone: one person’s acceptance is another one’s rejection. Worse, what is appealing at one moment may not be at another.

• Physical Computing’s Greatest Hits (and misses)

  • my inspired ideas: gloves that can be used in a concert (or computer vision?) / wings that will make you feel like you are really flying, the wind, the pressure / a crown / 小小的掌上游戏机, like, keep a pet in a small game console that the pet is actually u (an idea of care yourself)

• Labs:

• how to make the sound of speaker louder? resistor with fewer resistance
• speaker needs delay to actually create a sound with frequency
• Arduino cannot read and write at the same time
• wire wrapper
• Questions:
  • Where to find the result of println?
  • What is “serial” to be specific? communication between the Arduino board and a computer or other devices
  • Why don’t we define pinMode and just use analogWrite & analogRead sometimes? Is it mandatory to define pinMode or not? analogRead is default.