Making Toys

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  Yury Gitman 10:11 pm on October 28, 2008 Permalink | Reply  

  Analog Sensor Average 

  Hey guys, here’s a link of an analog sensor average code from ITP’s PhyComp website
  [One Sensor Avg]

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  Yury Gitman 7:44 pm on October 28, 2008 Permalink | Reply  

  IR Proximity changes LED’s 

  http://vimeo.com/moogaloop.swf?clip_id=2094937&server=vimeo.com&show_title=1&show_byline=1&show_portrait=0&color=&fullscreen=1
  LED Switch with IR Sensor from Katrina Bekessy on Vimeo.

  I tried Matt’s code and it worked well, but what you see in the video is my less sophisticated code at work which you can see here:

  int irPin = 3; // IR sensor is read from pin 3
  int irVal = 0; // hold the values read from the IR sensor

  int orngPin = 9;   // Orange LED,   connected to digital pin 9
  int bluPin = 10;  // Blue LED, connected to digital pin 10
  int grnPin = 11;  // Green LED,  connected to digital pin 11

  void setup()
  {
    pinMode(orngPin, OUTPUT);   // sets the pins as output
    pinMode(bluPin, OUTPUT);   
    pinMode(grnPin, OUTPUT);
    Serial.begin(9600); //see what the heck my IR sensor is reading
  }

  // Main program
  void loop()
  {
    irVal = analogRead(irPin); 

    if (irVal>=200) //when you’re closest to the sensor
    {                  
      digitalWrite(grnPin, HIGH);
      digitalWrite(bluPin, LOW);
      digitalWrite(orngPin, LOW);
    }
    else if (irVal>= 75 && irVal<=200) //middle range of sensor
    {
      digitalWrite(grnPin, LOW);
      digitalWrite(bluPin, HIGH);
      digitalWrite(orngPin, LOW);
    }
    else if (irVal<75) //when you’re the furthest away
    {
      digitalWrite(grnPin, LOW);
      digitalWrite(bluPin, LOW);
      digitalWrite(orngPin, HIGH);
    }
    Serial.print(irVal);
    Serial.println();
  }

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• 

  Yury Gitman 5:59 pm on October 28, 2008 Permalink | Reply  

  recorder (volume control+fwd) 

  http://vimeo.com/moogaloop.swf?clip_id=2105445&server=vimeo.com&show_title=1&show_byline=1&show_portrait=0&color=&fullscreen=1
  recorder (volume+fwd) from maze on Vimeo.

  
  

  

  

  

  

  

  
  

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• 

  Yury Gitman 5:46 pm on October 28, 2008 Permalink | Reply  

  IR sensor +3 color LEDs 

  http://vimeo.com/moogaloop.swf?clip_id=2093933&server=vimeo.com&show_title=1&show_byline=1&show_portrait=0&color=&fullscreen=1
  IR sensor + 3 color LEDs from maze on Vimeo.

  

  

  

  I didn’t use the average code, actually I didn’t know there’s an average code until Yury mentioned about it.
  Somehow my LEDs wouldn’t flicker a lot.
  So here is my code. It is quite simple.
  Basically I just change the on and off status of each LED in different ranges.

  ——————————————————————————

  /*
  *New Arduino hooked-up to 3 different Super-Bright LEDs.
  *Program the 3 LEDs to turn on/off individually depending on distance of hand.
  *Tzumei M. Hsiao
  */

  // Analog pin settings
  int irIn = 3;    // the IR sensor connected to the analog pin 3

  // Digital pin settings
  int redLED = 9;   // LEDs connected to digital pins 9, 10 and 11
  int blueLED = 10;  //   (Connect cathodes to digital ground)
  int greenLED = 11; 

  // Values
  int irVal = 0;   // the variable to store the input from the IR sensor
  int redVal = 0;   // the variable to store the value of red LED
  int greenVal = 0;  // the variable to store the value of green LED
  int blueVal = 0;  // the variable to store the value of blue LED

  // Variables for comparing values between loops
  int i = 0;            // Loop counter
  int wait = (1000);    // Delay between most recent pot adjustment and output

  int sens         = 3; // Sensitivity threshold, to prevent small changes in
                        // IR sensor values from triggering false reporting
  // FLAGS
  int PRINT = 1; // Set to 1 to output values

  void setup()
  {
    pinMode(redLED, OUTPUT);   // sets the digital pins as output
    pinMode(blueLED, OUTPUT);   
    pinMode(greenLED, OUTPUT);
    Serial.begin(9600);     // Open serial communication for reporting
  }

  void loop()
  {
    i += 1; // Count loop

    irVal = analogRead(irIn);  // read input pins, convert to 0-255 scale
    if (irVal < 300)//if (irVal<341)
    {
      redVal= 255;
      greenVal= 1;
      blueVal= 1;
    }//end of if
    else if (irVal< 600)//else if (irVal< 682)
    {
      redVal= 1;
      greenVal= 1;
      blueVal= 255;
    }//end of else if
    else
    {
      redVal= 1;
      greenVal= 255;
      blueVal= 1;
    }//end of else

    analogWrite(redLED, redVal);    // Send the new value to LEDs
    analogWrite(blueLED, blueVal);
    analogWrite(greenLED, greenVal);

    if (i % wait == 0)                // If enough time has passed…
    {   
      if ( irVal > sens )   // If old and new values differ
                                                    // above sensitivity threshold
      {
        if (PRINT)                    // …and if the PRINT flag is set…
        {
          Serial.print("The value of IR sensor: ");        // …then print the values.
          Serial.print(irVal);         

          PRINT = 0;
        }
      } 
      else
      {
        PRINT = 1;  // Re-set the flag   
      }

    }
  }

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• 

  Yury Gitman 5:18 pm on October 28, 2008 Permalink | Reply  

  IR sensor + 3 LEDS 

  Here’s the fine video of my IR sensor actually working!!

  http://vimeo.com/moogaloop.swf?clip_id=2093728&server=vimeo.com&show_title=1&show_byline=0&show_portrait=0&color=00ADEF&fullscreen=1
  Another IR sensor + 3 LEDS from Joana Kelly on Vimeo.

  I had some wacky issues connecting my IR sensor, but found a useful diagram, also including here:

  
  I ended up adapting Matt’s code also. My original code made the lights flicker a lot, but Matt averaged out the IR signal quite effectively. Kudos to you, sir. Matt’s code is also after the jump.

  (More …)

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  Surveillance Solutions is discussing. Toggle Comments

   
  • 

    Surveillance Solutions 6:21 am on March 22, 2010 Permalink | Reply

    I’ve being researching about IR Devices and reading your blog, I found your post very helpful 🙂 . I thought I would leave my first comment. I don’t know what to say except that I have enjoyed reading.

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  Yury Gitman 1:56 pm on October 28, 2008 Permalink | Reply  

  Mid term Concept 

  

  For my thesis, I am looking at urban spaces and researching on how people navigate through the space and communicate within that space.

  For my midterm, I would like to make a toy which will communicate whether you are intruding its space by sound and light feedback. The data will be collected from surveying 3 different cities, New York, Madras and Amsterdam. There will be three robots made with different IR ranges depending on the results of the survey.

  This will act as a tool that expresses how physical contact, personal space and such differs according to the geographic location and culture.

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  Yury Gitman 1:33 pm on October 28, 2008 Permalink | Reply  

  3 LED IR Setup 

  http://vimeo.com/moogaloop.swf?clip_id=2091681&server=vimeo.com&show_title=1&show_byline=1&show_portrait=0&color=&fullscreen=1
  3 LED IR Setup from Mouse & the Billionaire on Vimeo.

  I had some problems earlier with light flickering, but I solved this by averaging the input from the IR sensor and smoothing out the results. Works great now.

  (More …)

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