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antpgomes
antpgomes

Arduino + Processing + Trigger events through webcam

in Integration and Hardware  •  1 years ago  
Hi guys, I was wondering if anyone could give me some help....I'm doing a project where i have servos that i want to be triggered through movement, so far I have the below codes...the problem is that the servo just keeps runing on it's own, doesn't stop at states...


Arduino:

Copy code
  1. #include <Servo.h> 

  3. Servo myservo1;
  4. int pos = 0;
  5. const int ledPin = 13; // the pin that the LED is attached to
  6. int incomingByte;      // a variable to read incoming serial data into

  8. void setup() {
  9.   // initialize serial communication:
  10.   Serial.begin(9600);
  11.   // initialize the LED pin as an output:
  12.   pinMode(ledPin, OUTPUT);
  13.   
  14.   myservo1.attach(3);//servo  
  15.   //myservo2.attach(9);//servo  
  16.   //myservo1.write(pos);
  17. }

  19. void loop() {
  20.   // see if there's incoming serial data:
  21.    if (Serial.available() > 0) {
  22.     // read the oldest byte in the serial buffer:
  23.     incomingByte = Serial.read();
  24.     // if it's a capital H (ASCII 72), turn on the LED:
  25.           if (incomingByte == 'H'){
  26.             digitalWrite(ledPin, HIGH);  // turn LED OFF 
  27.             for(pos = 0; pos < 180; pos += 6)  // goes from 0 degrees to 180 degrees 
  28.               {                                  // in steps of 1 degree 
  29.                 myservo1.write(pos);              // tell servo to go to position in variable 'pos' 
  30.                 delay(15);                       // waits 15ms for the servo to reach the position 
  31.               } 
  32.              
  33.              Serial.println("AAoff");
  34.              Serial.println("Servooff");
  35.            }
  36.             if (incomingByte == 'L'){
  37.               digitalWrite(ledPin, LOW);  // turn LED OFF 
  38.               for(pos = 180; pos>=1; pos-=6)  // goes from 0 degrees to 180 degrees 
  39.                 {                                  // in steps of 1 degree 
  40.                   myservo1.write(pos);              // tell servo to go to position in variable 'pos' 
  41.                   delay(15);                       // waits 15ms for the servo to reach the position 
  42.                 } 
  43.                
  44.                Serial.println("AAoff");
  45.                Serial.println("Servooff");
  46.             }
  47.    }
  48. }

WORKS WITH KEYBOARD....If i type L and H in the serial monitor it goes to the positions I want....

In the processing part I was trying this:

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  1. import processing.serial.*;

  3. Serial port;

  5. void setup(){
  6.   size(200,200);
  7.   noStroke();
  8.   //framerate(10);
  9.   
  10.   port=new Serial (this, Serial.list()[1],9600);
  11. }

  13. boolean mouseOverRect()
  14. {
  15.   return((mouseX>=50)&&(mouseX<=150)&&(mouseY>=50)&(mouseY<=150));
  16. }

  18. void draw(){
  19.   background(#222222);
  20.   if(mouseOverRect())
  21.   {
  22.     fill(#BBBBB0);
  23.     port.write("H");
  24.   }
  25.   else{
  26.     fill(#666660);
  27.     port.write("L");
  28.   }
  29.   rect(50,50,100,100);
  30. }

Or something similar that can trigger when the camera detects movement....another example is the Frame Differencing but i can't use regular video library with serial...

Thank in advance!

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