Spider-Man vs. CD Player

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

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