Photoresistor / photo cell + Max?


    Dec 06 2009 | 1:48 pm
    hello!
    please have a short look at this 30sec video:
    i'm familiar with arduino, but not sure about the software used to implement this idea (i planned to build my sister a rather weird x-mas present)
    first i thought processing was taking care of what's going on on the screen, but i believe to recognize a max/msp patch in the background (very bad quality and one only gets a glimpse at the desktop)
    cheers for any hint!
    -jonas

    • Dec 06 2009 | 3:21 pm
      For such a simple application, I would use Jitter and the luminosity from a webcam (built-in or not), that would be cheaper.
    • Dec 06 2009 | 3:39 pm
      oh, but i've got everything here. :) arduino, resistor, photo cell etc
      i meant to build my sister a small clean box (the hardware inside not really meant as a present, grin), with only the photo cell visible (obviously). so she can fool around with the playback
      i'd need someone to point me in a direction when it comes to what max basically needs to know (or probably jitter..)
      all the best!
      -jonas
    • Dec 06 2009 | 3:53 pm
      This is actually pretty straightforward to get this into Max. Basically they are mapping photocell values to frames of a movie and scrubbing thru the movie based on the sensor value. Here is one path:
      photocell >> arduino >> Mac/PC >> [serial] >> [scale] (map photocell values to frame) >> jit.qt.movie >> jit.pwindow
      HTH,
      David
    • Dec 06 2009 | 3:59 pm
      okay, thanks! i'll get to it & let you know how it went! :)
      nice weekend (at least what's left of it)..
      -jonas