Lightstage

https://github.com/mrichardson23/Arduino-Audio-Flash-Trigger/blob/master/Arduino-Audio-Flash-Trigger.pde

http://pskillenrules.blogspot.co.uk/2011/01/arduino-based-camera-controller.html

http://www.instructables.com/id/Remote-Canon-DSLR-Video-Trigger/step4/Arduino-Code/

09/04: To connect an other arduino in slave. http://arduino.cc/en/Tutorial/MasterWriter

But we cannot use this way to connect 5 Arduino. Even so They will able to synchronise himself.

FOUND : http://www.instructables.com/id/I2C-between-Arduinos/

I'm drawing the sketch. (It is the most difficult task)  

Camera :

http://forum.arduino.cc/index.php/topic,101188.0.html

http://www.instructables.com/id/High-Speed-Photo-Arduino-HighSpeeduino-/

http://kavasmlikon.wordpress.com/2012/02/26/high-speed-photography-workshop-with-arduino/

10/04: I'm still working on a sketch. I have to improved my I2C comprehension.

http://en.wikipedia.org/wiki/I%C2%B2C

http://playground.arduino.cc/Main/I2CBi-directionalLevelShifter (For circuit using several voltage, not ours)

11/04: An other I2C example.

http://tronixstuff.com/2010/10/20/tutorial-arduino-and-the-i2c-bus/

We made a meeting, I should trigger a camera.

The camera can be shoot by to ways.

USB: http://www.circuitsathome.com/?s=7d

OTHER: ???

CAMERA

http://www.circuitsathome.com/canon-eos-cameras-principles-of-interfacing-and-library-description

http://www.circuitsathome.com/canon-eos-cameras-principles-of-interfacing-and-library-description

http://www.electronics-tutorials.ws/transistor/tran_4.html

I2C

http://hacknmod.com/hack/how-to-connect-multiple-arduino-microcontrollers-using-i2c/

http://playground.arduino.cc/Main/I2cScanner

http://forum.arduino.cc/index.php/topic,16793.0.html

http://playground.arduino.cc/Main/WireLibraryDetailedReference

Arduino plugin setup for Visual Studio: http://www.visualmicro.com/page/arduino-visual-studio-getting-started.aspx

07/04: I have re-built my little circuit. And I've made some research for the IDEs. (Eclipse and Visual Studio) But for Eclipse the Arduino plugin isn't up to date. So I will develop on Visual Studio.

In other part, I have read a part of the thesis. (MSc thesis based on the York lightstage) And I have found a solution for Unix, which is using a virtual machine/box.

08/04: How to use PWM.

First program :

My first code was just an application of PWM running. [Inventory 1]

Now, I have to code a generic class. But with this version we have a problem if a blocking process. (like delay come in a loop) So, I have found an example using an ISR. 

http://en.wikipedia.org/wiki/In-Service_Register

Solution A: 

I have developed a little library. In a first time, I haven't used ISR but I have seen a impossible solution. And then, I've used it by following the library SoftPWM. Hence, I have wrote a similar library without certain options.  [Inventory 2]

Solution B: 

The second solution is to used the SoftPWM. 

Anyway I will finish my similar library. Then we will see which use.

INVENTORY

1

unsigned int brightness = 0; // how bright the LED is int fadeAmount = 1; // how many points to fade the LED by

void setup() {

pinMode(13, OUTPUT); }

void loop() {

brightness = brightness + fadeAmount;

if (brightness == 0 || brightness == 100) { fadeAmount = -fadeAmount ; }

delayMicroseconds(0.01*2000);// delay for LOW

digitalWrite(13, HIGH);

delayMicroseconds(0.99*2000); //delay for HIGH

digitalWrite(13, LOW);

}

2

Above, you can see my first steps using a Arduino and some LEDs.

I have made different experiments :

LED wreath

LED fade (using PWM)

Communication between the computer and the ARDUINO

I have discover the arduino IE and the arduino card.

I have made several micro-programs starting by switch ON/OFF a led, then a guarland. And in a seconde part take part of the PWM (intensity using a persistence retinienne or the available/compatible pins).