The

1
The Crib.

• Christa Wheeler
• Sirin Yaemsiri
• Vidya Goli

2
What are we designing?

• Orientation game for visually impaired babies and
  toddlers
• Sound orientation game helps to encourage
  movement and exploration

3
Where did the idea come from?

• Goldbergs students designed sound mat
• Sound cubes that only sighted children could use
• How can we modify toys to benefit blind children?

4
The Primary Playpen Game

• One corner plays a sound
• The child must move towards the sound and press a
  large button signifying that they have reached
  the corner
• Once that button is pressed, another corner,
  selected at random, begins to play music

5
What does this toy do?

• Encourage a VI child to crawl and move around
• Help the child begin to orient themselves using
  sound
• Provide a fun and safe way for the child to play
  and exercise without excessive parental
  supervision

6
Circuit Schematic Part 1
OR Gate Logic
a b ab 0 0 0 0 1 1 1 0 1 1 1 1
Corner Buttons
MOD-16 Counter
OR Gates
D Flip Flops
NAND Gate
___ AB
RESET
A
20
21
B
22
a b
a
23
__ A B AB 0 0 1 0 1 1 1 0 1 1 1 0
NAND Gate Logic
b
7
Circuit Schematic Part 2
2 AA Batteries (6V)
Selector Lines
DEMUX
Inverter
20
21
From D Flip- Flops
Demultiplexer (DEMUX)- sends 5 V out
on unselected lines
TO MUSIC CIRCUITS
Optical Isolators
8
Prototype II

• New design for music player
• Switches that are easier to use and have less
  bouncing
• Hide circuitry under mat
• Moveable speakers and switches
• Retractable cords (?)
• Infrared (?)

9
The Future

• Internship
• - Summer Undergraduate Research Fellowship
  http//www.unc.edu/depts/our/summer_research.html
  
• Governor Morehead Preschool
• National Science Foundation Senior Design
  Projects Publication http//nsf-pad.bme.uconn.edu
  /
• RESNA (Rehab Engineering and Assistive Technology
  Society of N. America)
• - Conferences in 2003 and 2004
• - Competition
• - http//www.resna.org/

10
Acknowledgements

• Richard Goldberg
• Hugon Karwowski
• Sean Washburn