Labs

• Delays:
  • to control high current loads
  • can control AC loads as well as DC loads
  • can’t use a relay to dim a lamp or control the speed of a motor. The switching speed of relays is too slow to pulse width modulate them
• transistors
  • base, collector, emitter (gate, drain, source) (the naming is so counter-intuitive!)
  • very effective when you want to turn them on and off rapidly
• Motors for rotation
  • DC motor
  • RC servomotor
  • Stepper motor

Sketching user experiences: the work book

• consider many ideas and then choose between them (use several starting points and local hill climb)
• sample the good and bad designs in real world, use sketchbook\photos\objects
• use hybrid textures to emphasize a person’s interaction with a device

Making things move, chapter 2

• introduction of materials

Making things move, chapter 9

• fabrication methods