Spider-Man vs. CD Player

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Devices: General Desciption

The devices to be compared are a Coby portable CD player and an Animatronic Spider-Man Toy. More information about each device can be found by clicking on the following links.

Group 1 Home
Animatronic Spider-Man
CD Player


Overview.jpg Sman1.jpg

Comparison Table of Components

CD Player vs. Animatronic Spider-Man Toy
Component Category CD Player Animatronic Spider-Man Toy
Human Machine Interface
  • Input buttons to control the unit
    • Play/Pause, Stop, Fast-Forward, Rewind, Eject
  • LCD screen to provide information to the user
  • Volume knob to control output audio signal
  • Momentary push buttons on feet activated by user initiate sound and motion
Sensing
  • Cover Sensor - allows CD player to 'know' when the cover is open
  • Laser Transport Home Sensor - allows the absolute position of the transport to be obtained. Additionally, it prevents the transport from crashing into its mechanical limits of motion.
  • CD Speed Sensor - interaction between the read-head and main controller allow the CD to be accelerated or decelerated to combat skipping.
  • Momentary push buttons also fall into this category
  • Internal rotary contact switch acts as sensor to indicate rotational arm position
Movements
  • CD Spindle Motor - DC motor - rotates the CD
  • Laser-Transport Motor - DC motor - moves the Laser Transport radially along the CD
  • Laser-Focus Motor - electromagnetic solenoid - moves the laser and lense towards or away from the CD's surface
  • Torso rocks side-to-side
  • Head rocks opposite torso
  • Arms rotate about upper-arm
  • Hands rotate about forearms
Power Supply
  • Two 'AA' batteries
  • One motor located near the pelvic area performs all functions
Power & Motion Conversion
  • Spur gears reduce the Laser-Transport Motor's rotational speed while transmitting power to the Laser-Transport's feed-screw. The gearing also increases the available torque for the feed screw.
  • One gear train operates torso movement
  • One gear train operates arm movement
  • Belt-drive system connects motor to gear trains and helps avoid 'frying' motor
  • Scotch-Yoke mechanism utilized to create repetition in swaying torso
  • Scotch-Yoke used to operate rotating hands
  • Bevel gears used in arms to convert motion at 90-degree elbows
Intelligence
  • The control circuit interprets user inputs to produce specific system responses.
  • The controller interprets the information that is encoded in the CD and produces a corresponding analog electronic output signal.
  • Songs and dancing motions saved internally
  • Different song played depending on which button is activated
  • Different portions of a song played upon each activation by the user
  • Song plays in correct sequence upon each activation
  • Dancing movements correspond with song
  • Arm position sensor ensures proper location of arms for each step