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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]

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

    IR Proximity changes LED’s 

    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);

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

    recorder (volume control+fwd) 

    recorder (volume+fwd) from maze on Vimeo.






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

    IR sensor +3 color LEDs 

    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
        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.

            PRINT = 0;
          PRINT = 1;  // Re-set the flag   


  • 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!!

    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 …)

    • 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.

  • 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.

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

    3 LED IR Setup 

    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 …)

  • Yury Gitman 7:38 pm on October 26, 2008 Permalink | Reply  

    IR sensor with three LEDs 

    IR sensor with three LEDs from Jennifer Dopazo on Vimeo.

    (More …)

  • Yury Gitman 9:44 pm on October 24, 2008 Permalink | Reply  

    06 IR sensor + RGB leds & Floating Duck experiment 

    I set three ranges of distance for each led.http://vimeo.com/moogaloop.swf?clip_id=2060055&server=vimeo.com&show_title=1&show_byline=1&show_portrait=0&color=&fullscreen=1
    IR sensor + RGB led from Hsiang Ju Hung on Vimeo.

    Here is the code: Download IR_RGB
    And I did a test for floating duck.



    I made a plastic base installed IR sensor for duck. And put it into a container (6"*6"*6").
    Then kept adding water into it.
    Here is the height of the water V.S. analogRead
    1 inch : -255
    2 inch : -65
    3 inch : -170
    4 inch : -240
    Yeah~ it works in water!!! The voltage changes with the height.
    But even I tried many times to modify the proper range for each led, I still cannot make leds switch with the value.  Um… maybe it is because it is always negative value and it changes non-linearly….. have no idea yet.

    UPDATE: I tried to do it without water in the same distance but still failed. It only turned on one led.  I found that it might because it is below 10 cm which is out of Sharp sensor range(10-80cm).  So I think I need to measure the proper height of water in tub to see if the sensor is suitable for it first. 10/28

  • Yury Gitman 7:20 pm on October 21, 2008 Permalink | Reply  

    antisocial animals 

    character design


    I would like to make a bunch of antisocial animal plush toys. They are antisocial and they have antisocial behaviors, but they do cute things.

    Ideas of toy function so far:
    1. stick out tongue
    2. crossed arms
    3. yell "shut up" when it detects words it doesn’t like
    4. puff out cheeks
    5. never be face to face with you
    6. air guitar
    7. it will roll its eyes and say "what ever"
    8. when holding  the toy, it would say "leave me alone"

    They all have the same characteristic: they’ll feel embarrassed after doing "bad things".

  • Yury Gitman 6:10 pm on October 21, 2008 Permalink | Reply  

    Winbond Recorder 

    Winchip Recorder from Fuki on Vimeo.

  • Yury Gitman 6:09 pm on October 21, 2008 Permalink | Reply  

    Midterm Proposals (To be Updated SOOON… sorry) 

    At this time in the semester, I can’t stop thinking about my thesis, so I’d like to make something related. 

    For my thesis, I’m exploring simple games that are fun and effective for neuro-rehabilitation. I’ve come up with several simple games that I’m hoping to develop further, both conceptually and technically.

    Each game focuses on a particular function of disability.  For the first one, I’d like to focus on proprioception (one’s sense of position in space).   A person with a proprioception problems often have difficulty sensing where their arms/legs are in space.  For this reason, it’s importan to exercise and train the person by making connections between distance, proximity and posiiton.  One of the games that I have been playtesting is similar to "Pin the Tail."   Using sensors can  possibly help the patient in getting closer to the "target". 


    Another game that I’m looking into is called Blinded Samurai.  There are two main players, who have to find each other, as they listen to their personal guides. 

  • Yury Gitman 5:57 pm on October 21, 2008 Permalink | Reply  

    05 Midterm Concepts 

    #1 A penny a day, keeps a piggy happier

    As money gets more, the piggy’s cheek becomes redder/ piggy sounds more pleased.

    #2 Floating duck

    While you are taking a bath, the duck will change color with the wave. Or the duck will inform you once the water arrives certain height while you are away and keep storing hot water in the tub to avoid wasting time or water.

    #3 Answering Door
    Using IR sensor to release voice message from the host.  Or using push button to allow visitors to leave their message to the host.

    #4 No real height
    This height measurement machine won’t hurt anyone with telling your real.  It will only tell you who else has the same height as you.

  • Yury Gitman 5:06 pm on October 21, 2008 Permalink | Reply  

    Audio Recorder 

    Here is the push buttons and LED lights:


    Here is the speaker cover/with plastic tube beneath to amplify the sound

    (More …)

  • Yury Gitman 4:57 pm on October 21, 2008 Permalink | Reply  

    Midterm Concepts 

    1) Omnipod Installation — I have type 1 diabetes, on an insulin pump, etc. Recently I have been looking into this newer pump called the ‘Omnipod.’ Basically each pod is a microcontroller, a couple gears, batteries, a needle, plastic catheter, and reservoir of insulin. You get 10 of them a month, they are controlled wirelessly by a PDM device that tells the pod how many times to move its gear to get insulin out, basically. So I was thinking of hacking into a couple pods. I was given some free ones by the sales-rep…and have already taken one apart. I’m so geeky. Anyway, I was thinking of trying to re-control it, without the PDM. Perhaps making the gear move/some kind of liquid coming out. I think I could also attach a speaker to it and make it say things like "0.5 units" or whatever. I want to bring it alive! Maybe there could be three or four on a wall, with proximity sensors, lit up by LEDS, and when someone gets close they will drip liquid.




    See my other project ideas at the following link

    (More …)

  • Yury Gitman 4:48 pm on October 21, 2008 Permalink | Reply  

    Midterm Concepts 



    This concept involves two pandas, which both detect presence. One panda, when detecting someone near by, sends a message to the second panda, which sneezes, alerting the second person of the first person’s presence. Naturally this concept makes the most sense when the two pandas are in different places.

    Time Bird


    The tenatively named Time Bird monitors the amount of time someone spends in front the computer. The bird will chirp every hour, counting the number of hours that pass, and when someone gets up from the computer the bird will reset.

    Ambient Sound Frame


    This photo frame would play ambient sound from the day the photograph was taken, or a recorded message related to the photograph when someone picks up the frame or gets close to it.

    Proximity Alert


    I thought about this the other day while setting up a photo studio in my apartment. I came close to falling over the lights and cords several times and could have used a little extra help steering clear of all the obstacles.

    Magic Music Box


    The music box would play a short tune, much like a traditional music box (or snow globe), but it would mysteriously sense your presence and begin to play! Like Magic!!

  • Yury Gitman 4:27 pm on October 21, 2008 Permalink | Reply  

    04 Recorder with push buttons 

    04 Recorder from Hsiang Ju Hung on Vimeo.
    order of the buttons from left to right is: Erase, Forward, Rec, Play, FT, Vol. There are only three white push buttons that have graphic. The speak is at the left bottom. I recorded four sounds, tried to turn up and down the volume, and pressed Forward and Play to play next sound.

  • Yury Gitman 1:27 pm on October 21, 2008 Permalink | Reply  

    MidTerm Prototypes 

    ChatBot Voice-Replacement Surgery


    I got this robot a few months ago because I thought he was cool. He is named ChatBot, except his chat functionality doesn’t work. You are supposed to be able to record on his little tape face and he’ll play it back to you. Instead he just goes forward and turns (He can’t go backwards. Poor chatbot). This project would help give ChatBot back his voice, and also, as a bonus, it will let him warn you about his proximity to objects that might hurt him (like walls).

    Taunting Cat Toy


    My cats like cat toys. They are also feisty and tend to think they are (every pun intended) the cat’s pajamas. I propose a cat toy that will a) entertain them and b) put them in their place. I like the idea of the cat toy sensing motion, and, if nothing has come close to it recently, it will go through one of its 10 pre-recorded taunts. Only after the cat approaches it will it tone down the insults. I could also include a motion sensor that could do something when it was rolled. Fun!

    Facebook Adicts


    Are you tired of being tied to Facebook? Well how’s about a little sensor that pulls data from your facebook account and tells you "There’s no need to check your account now," whenever you get close to your computer? Could be useful.

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