Lighting Bugs in a
Bottle
A Special Project in Digital Media Lab
2009-04-13

About Lecturer:
Youmin Kim
- B.S. in CS, ICU (2004-2008)
- M.S. candidate in Digital Media
Program, KAIST ICC (2008- )
- Interests: Small mobile
devices,Web and tags, User
Experience

Today’s Project: “Lighting Bugs in a Bottle”

Our Goal: to make a
digital lighting bugs in a
bottle

How to make the
lighting bugs?

We will use LEDs!
• LED (Light-emitting
diode) is an electronic
light source
• Many LEDs in our life
(TV, traffic lights, ...)
• You can select colors of
the bugs :)

How to supply the
electricity?

We will use Coin
batteries!
• Voltage: 3V
• Small enough to insert
into the bottle

We will use a glass
bottle
• A small and transparent
bottle

On the other hands,
What is the story of
this project?

We are traveling in a countryside at night. We meet
many lighting bugs!
we extend our arms to them softly,
so we take them in the hands.
Finally, we look them in our hands

In terms of digital technology,
the device will aware our hands.
Then, automatically, LEDs will be turned
on.

How to aware our
hands?

We will use CDS!
• CdS (Cadmium sulfide)
• A photo-resistor or light
dependent resistor
• When we wrap the
bottle, the light will
decrease!

Last question:
Who control these
things?

Microcontroller! !\"#$%&'%()'*+
$-.% !/01/23,435/678
65,-<4884=17+->,2?147>-+1@,-?5,-?,25712*8-A,?*18>-4<-?5,-)*2B*+,>;
,
8-Lead Plastic Dual In-Line (P or PA) – 300 mil Body [PDIP]
• It is like a CPU in our
Note: For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
PC N
•
NOTE 1
It will control sensing
E1
and output part in our 1 2 3
project
D
E
A A2
• We will use PIC12F675 A1
b1
e
L
eB
c
b
Units INCHES
Dimension Limits MIN NOM MAX
Number of Pins N 8
Pitch e .100 BSC
Top to Seating Plane A – – .210
Molded Package Thickness A2 .115 .130 .195
Base to Seating Plane A1 .015 – –
Shoulder to Shoulder Width E .290 .310 .325
Molded Package Width E1 .240 .250 .280
Overall Length D .348 .365 .400

CDS sensor
how to aware our hands?
3V PIC12F675
LEDs
(Battery) (Microcontroller)
how to supply electricity? how to make lighting bugs?
how to control?

Case study from
previous seminars

Universal PCB
Nipper
Long nose plier
Stripper
Ejector
Multi-meter
CDS Sensor
Resistor
LEDs
PIC12F675

Some tricks in
electronic circuit

+ -
The long is positive side