Week 8 - Wearable Computing II

This week's post will be more focused on our technical term.



CONCEPT
We design this particular piece for police officers. In order for police work
and manage easily when they met the traffic jam or the traffic accidents at
night time.


HOW IT WORKS
The accelerometer reads the date from the participant’s hand by their
speed of the movement, then sends the data to LED lights (output). the
LED lights read the signal from the accelerometer and response with
different speed of blinking.

our final circuit digram:

CULTURE/SOCIAL INTERACTION

We develop this project to help the Police officers work better and efficient

at the night time. In addition, we can easily to understand what the Police

officers’ meaning at night ( dark envinonment ) through their body language.

HUMAN INTERACTION

Based on our project, police officer can interact and commuicate with

people easily by using the LED signal through the Arduino. This particular

piece is very easy to use. By daily movement and their special hand

gesture, the speed of the LED lights will according to those hand.

Work progress:

Many many wires

First test:

The base sequence of the LEDs:

The finalized sequence of the LEDs. (airport directing signal sequence)

The last step, after we adjust the reading value from the Accelerometer, we give 3 level of speed to the sequence of the light.


When the user does not move, the "Z" parameter value below 350, the speed is on the fastest mode.
When the user start moving the arm, the "Z" parameter value above 350 and below 460, the speed is on the normal speed mode.
When the user moves the arm really really fast, the "Z" parameter value above 460, the speed is on the slowest mode.

By using this setting, when the police waving his hand slowly, the light speed is faster, this behavior will save energy from the police. On the opposite side, if the police waves the arm too fast, the driver on the other side of the street will still be able to read the signal because it lights slower.

Week 7 - Wearable Computing I

The original idea is a bit tooooo complex. It is a police jacket that use LEDs to manage the traffic.  Our concept is to inter-grade technology with a police jacket to  make the police's life easier when they are doing their job.


As illustrated above, we will use many components to achieve the interactive jacket below.

The form got inspired by Pillobot : The softer Side of Technology and The climate dress. 


The LED sequence got inspired by Airport directing signal, which is the most efficient and understandable signal.

However, after we got some feedback from the professor, we decide to limited our goal , which means we are only going to focus on the LEDs functionality as the target for SKETCH 2.

Week 6 - Soft Circuit

This is the basic circuit we got from the lab. In our idea, we parallel connect more LEDs to form a shape, and we install it on one jecket.

Our idea is to let the LED light turn on in a constant low speed while the jacket button is not press, and when it is press, the LED light is light uo in a constant but a faster speed. So the jacket button is the switch in this case. 

In detail, the jacket has two buttons which indicates the "+" and "-". The LED lights are paced on the lift side of the jacket so that the whole circuit should like the image showed below. The + button(which connects to Pin 7 on the Arduino Board) we placed on the right side and with a 10K resistor (which connects to 5v). 

The problem we faced for the assignment 2 is that we did not  find a good way to weave the conductive thread into the jacket, the connection is very loose. In the end, there are a few light does not light on after active the circuit.

We need to improve the weaving technique in the future assignment.