Vibrotactile Device (Preject 2)

For second project, we use four buttons for different directions, and each button can trigger only one particular motor. Through this device, we can communicat each other with sending signal instead of speaking.

My receiver
This time we use NPN instead of PNP to control the vibrating motors. Every motor should connect one NPN transistor.

transmitter
The circuit has the same as first project. The differences are that we use four buttons for the directions.
Button 1 = Top Button = Move Forward
Button 2 = Bottom Button = Move Back
Button 3 = Right Button = Move Right
Button 4 = Left Button = Move Left

attaching the motors on a belt
For connecting a motor, we use glue after we solder the motor with wire.

To test the device

Testing the device at school with Jungjin
It works so fine. Before doing test, you should check the battery.

Useful link

Tactile interface

Tactile User Interfaces
Design of Haptic and Tactile Interfaces for Blind Users


wearble technology

Wearable Computing at the MIT Media Lab
wearable computers, Mobile Body-Worn Technology, Advanced Materials and Text


Flocking; Interpersonal Wireless ~ Tactile Interface
link to class site

Final flocking (May, 12 2005)

We went to the Washington Square Park to do final flocking.
One of students were transmitting and rest of the students
moved to the direction.



Andrew was recording the flocking.
We were in a line through the transmitted signal.



All of us could received the signal which was
transmitting by Yuri,
but we couldn't go to the same direction.
Because of some interferences of places
and unpredictably vibrating motors.
It was amazing that all students in class moved Yuri's control

click to see video

Testing the device at Washington Square Park
People moved like crabs

wearable technology workshop , 2005 March

:: Rhythm Pants Group - Kaho, Ira, nurri and me

we bought a toy for making sound with pressing buttons



we broke the toy to put the sound buttons on the pants



attaching buttons on the pants



the shape of pants



wearing the pants

Wireless Device (Project 1)

This is the first project and the first experience of
making electronic device like soldering, chips, LEDS etc.
After this project, I've enjoyed soldering and blinking LEDs.



transmitter(top), receiver(bottom)and LEDs
IN class, we used the HT-12E ENCODER IC, TWS-434A for transmitter and RWS434, HT-12D DECODER IC, and NPN Transistor for receiver.
The chips were programed for wireless control.

I made the leds as a necklace

Testing the device around the school
The receiver received the signal from the transmmiter in 300-400 meters and the signal sometimes got interferences in the distance.

Flocking at Union Square
We went to the Union square to see how people react to our blinking LEDs. It was snowing and cold, so there weren't a lot of people.

glowing LEDs in the dark