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Topic: A two hour project to use that pesky nuclear waste (Read 1 time) previous topic - next topic

focalist

Mar 25, 2013, 05:12 am Last Edit: Mar 25, 2013, 06:29 am by focalist Reason: 1
Videos to follow in a second post, processing.  

So....

Ended up having to kill some time today, so decided to slap a quick project together that was inspired by a video posted recently involving 24 Hz video synced with water falling from a hose, being vibrated at 24 Hz, and produced some cool effects.

 

I did something a little bit different.  While I deal with uploading video, see if you can figure out what's going on....

When the testing is complete there will be... cake.

focalist

http://www.youtube.com/watch?v=MkMSaqBpnnE


http://www.youtube.com/watch?v=G0cJJlbZkeY
When the testing is complete there will be... cake.

focalist

Code: [Select]


#include <Servo.h>

Servo myservo; 
int pos = 0;     
int minpos=70;
int maxpos=110;
int posstep=2;
int seek=10;
int wid, spd;
int cent=90;


void setup()
{
myservo.attach(9);  // attaches the servo on pin 9 to the servo object
randomSeed(analogRead(0));
}

 
void loop()
{   
  cent=90;
  wid=random(5,31);
  spd=random(1,4);
  minpos=cent-wid;
  maxpos=cent+wid;
  posstep=spd;
 
  for(int foo= random(1,11); foo<10; foo++) {
 
  for(pos = minpos; pos < maxpos; pos += posstep) 
    {                                   
    myservo.write(pos);
    delay(seek);                       
    }
  for(pos = maxpos; pos>=minpos; pos-=posstep)     
    {                               
     myservo.write(pos);               
     delay(seek);                       
    }
  }
}


And the circuit... hobby servo on pin 9, a couple of caps on the power leads of the servo the cut down the power noise, and a chunk of tubing hotmelt glued to the shaft of the servo.  Bucket filled with water with a standard yellow highlighter dissolved in two gallons water, front lit with 2x40w blacklight fluorescent.

Shot through 50mm 1.4 Canon.

I'll write some interesting code for it tomorrow if I get a chance.  Not really intending this to be a huge project, just a neat one!
When the testing is complete there will be... cake.

focalist

When the testing is complete there will be... cake.

focalist

So, it now will come down to some cool sequences rather than the random ones above.. Might have a couple of other cute ideas for it too.

Water oscilloscope?  Maybe multitrace, Arduino can easily handle multiple servos!
When the testing is complete there will be... cake.

johnft

That's awesome. A larger servo and a high-pressure water blaster could be a fun addition, or a water-misting for wider visual effects.  :)
http://www.freetronics.com

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