Tree

Experiments

*Major Electronic Project : Firefly

*Experiment on the tree's materials

*Material : Wire

Back to firefly

Measuring LDR - Resistor ratio

*Breadboard and components, this circuit will control the firefly light

*The (3 volts) voltage (+) is connected to a resistor (currently, I am using 5kΩ resistor)

*The 5kΩ resistor is connected to an LDR and another resistor (the second resistor is 100Ω resistor)

*The LDR is connected to the (3 volts) voltage (-)

*The 100Ω resistor is connected to the base of a transistor

*The emitter of the transistor is connected to the firefly circuit (-)

*The collector of the transistor is connected to another (3 volts) voltage (-)

*The 2nd (3 volts) voltage (+) is connected to the firefly circuit (+)

*Both the collector of the transistor and the 2nd (3 volts) voltage (-) are connected to the 1st (3 volts) voltage (-)

*Both power supplies must be common ground

*Using a 5kΩ resistor and an LDR

*When the LDR detects a light, the light goes dimmer

*Using a 5kΩ resistor and an LDR

*When the LDR detects no light, the light goes brighter

*Light effect on the body of a firefly

Holders

Candle and Wii-mote holders 

*New wood, 3 mm in thickness, 40 cm in length (after the cut)

*Using sand paper to smoothen the surface of the wood (cut part)

*Making 4 holes to mount the wii-mote's holder

*Screw the holder on the wood

*Holder is screwed

*New candle holder, circle - shape

*Candle holder, can be moved up and down

*With the candle

*The candle can be removed from the silver - holder, the silver - holder can be mounted on the candle holder

*Holder's (try-out) look

Ex•ag•ger•a•tion

Heartbeat (exaggeration)?

   

*Hearbeat (currently) :

- Happy-Normal state (9-year-old kid) : 20 (FrameRate = 30) --- This is the starting point

- Shape : Circle --- throughout the program

- Color : Hearty Orange (RGB (252, 121, 65); beating effect (color-changing : hearty orange to black, depends on the emotion) --- This is the starting point

- Movement : Size-changing depends on the emotion

What is missing here?

- Heartbeat & Heart Rate -

Heart Rate

*The difference in the speed of pulsing in each emotion is too small to detect

*Move away from the real heart rate, create own perception in the speed of the heartbeat

Heart Beat

*The heartbeat is way too boring (screen goes bright and dark)

Colors

*Might consider a change in the color

Movement

*Might consider a movement in the heartbeat instead of just doing the pulsing

Shape

*Which shape best-described the shape of a heartbeat

*New chart of colors

Work_In_Progress (27th March 2008) :

(1) Identify components of your work.

* Components :

- Computer program (Processing);

- Computer screen;

- Wii-mote and candle with the holders.

(2) What components are finished?

* Nothing.

(3) What problems are you facing?

* Computer program (Processing) :

- Program does not show enough of the change in emotion.

(4) What needs to be done?

* Things that need to be done :

- Computer program (Processing);

- The holders. 

(5) Identify solutions for the required components and encountered problems.

* Solutions :

- Computer program (Processing) --> Find the suitable speed (value of the speed), movement (how the heartbeat change its size), color (which color represent which emotion) and shape to show the heartbeat clearly.

(6) What is your strategy to finish your work in time, how will you accomplish your work?

* Strategy :

- Arrange a timetable, what we should finish by the end of the day.

- Stick on the timetable.

- Work on it.

Candle and Wii-リモコン 's holder

- Candle and Wii-mote 's holder -

*Idea : Wii-mote could rotate but could not move up/ down, candle could move up/ down

*Idea #1 : The up/ down movements of the candle are moved using the GEAR system

EXPERIMENT FAILED

*The gears did not work very smoothly

*A limit in how tall the candle can move up to

*Idea #2 : The up/ down movements of the candle are moved using the SCREW system

*It works out pretty good, except the lock for the screw

*The candle could move up

*Needs to lock the below part of the screw to make the candle moves down

*The distance of movement depends on the length of the screw

*Picture description : Sawing a piece of Balsa wood to make a table for the candle

*Accident does happen. 

*The side is not cut properly

*Using a wood glue to stick the table to its legs

*Screw in the middle to move the small piece wood up and down

*The small piece wood will hold the candle and it can be move up and down

*The big piece wood will act as the base

*Hammering the screw in the wood and screw it using a screwdriver

*The small piece wood with a screw attached

*Waiting for the glue to dry up

*A 60.6 cm x 30.2 cm wood was being cut into 40 cm x 30.2 cm wood

*This after cut wood will act as the wall to hold the wii-mote

*Thickness of the wood is 1.2 cm, which made it hard to cut

*Hammering a hole to put the screw, which will hold the speaker mount, used to hold the wii-mote

EXPERIMENT FAILED

*Wood is too thick to poke a hole, aside from using a drill

Materials' Day

Searching for Materials

- Candle and Wii-mote holder -

   

* Designing the candle and wii-mote holders

    

*Failures and Miscalculation happened a lot here

- Interview (on heart rate issue) -

*via SMS

Alexander Agung Suyono, a medical department student in Universitas Atmajaya, Jakarta, Indonesia

*live interview

Yvonne Tan, a pharmacist in Guardian, Paragon Shopping Centre, Singapore

*via chat service (on going, not yet replied)

Krishnanda Kusuma, a medical department student in Guang Xi Medical University, Nanning, China

*Sudden Help

An unknown guy from civil engineering, met in Home Fix Novena Square, gave idea on the adjustable holder by using an adjustable clamp

- A mock-up -

   

*Wii-mote bought at Funan Digital Mall

*A speaker mount to hang the wii-mote instead of speaker, bought at Home Fix the DIY store in Marina Square

   

*Tools needed

*A mock-up of the wii-mote holder

PROCESS

*Thought of using a drill to make a hole on the wood board

*The "L" shaped key, used to open up the front-part of the drill to change the "rotating cutting tip", was lost

*Helped by Andy and Stevie (Comm.D level 2 students) to make a hole using nails and hammer 

*It worked out pretty well 

- Next step -

*Building a much stronger "wall" for the wii-mote holder (thicker/ stronger wood board) so it won't break

*Building the candle holder

Flexible and Adjustable

- Major Interactive -

   

*Ideas on the Wiimote container (how the setup should be)

*First idea --> horizontally flexible idea (Thanks to Meryanche AA6A)

   

*Some ideas on the stand for the Wiimote container (vertically flexible)

*Horizontally and vertically flexible and adjustable

Objects that I have used as an adjustable stand reference

   

*A lamp -- the empty slot can be filled with a steel plate to hold it (imaginary thought, though)

*An office chair with wheels -- the below handle to raise the chair up dan down

   

*A tripod -- the legs can be pulled to make it longer

*An antenna -- the end can be pulled to make it longer

*A desk-lamp -- the middle part of the lamp can be pulled to make the lamp taller

- Electronics -

*Fatal Mistake in assembling both circuits

*Both power supplies should be in COMMON GROUND

*Count the ratio of the resistance to fit the LDR resistance when there is a light or no light

*Needs resistor with lower resistance <100

*Connecting both power supplies to the same common ground

On Going

- Major Interactive -

*Final decision : Heartbeat

*Next "To Do" list :

-Design and build a container for the wii-mote

-A new Dramaturgy

-Programming

-Decision on final setup (screen-based, sound, both screen and sound)

- Electronics -

Major Project : Firefly

*The circuit is WORKING~!!!

*Next "To Solve" list:

-Controlling the intensity of light

-Design and build the setup