Updates from March, 2012 Toggle Comment Threads | Keyboard Shortcuts

  • adamsabh 2:28 pm on March 24, 2012 Permalink | Reply  

    Midterm Sketches 

    So for my midterm project I want to construct a light system that will react to the people that are within a confined space. Instead of having to set mood lighting or buy different types of bulbs for certain types of parties, events or even just daily use you can buy my one product and be covered for any occasion.

    Below is a sketch of what it will look like. The Computer is set up to the Arduino and a set of headphones so the user can feel as if they are connected to the machine and enhance their experience (for now). I will later power the light separately with a 9v but for now it will be powered by the computer.

    The Arduino sits beneath the light and it will be programmed to take the pulse of the user and interpret that into an appropriate light display. So for instance the user has had a rough day, comes home, put on Radioheads “Nude” and sips a glass of wine their pulse will go from a rapid rate to a very subdued and relaxed state. In which case my lights will react with an ambient mesh of blues, purples, and dull yellow tones. This will help the user relax as well as light their room according their mood without them having to get up and find an appropriate light bulb or brightness level.


    Here are the 3 songs that I will use the help achieve the most effective results.

    Relaxed pulse rate:  Radiohead – “Nude”

    Active pulse rate:   Avicii – “Levels”

    Highly Active pulse rate: Every Time I Die – “Cities and Years”

  • Joe Volpe 2:20 pm on March 23, 2012 Permalink | Reply  

    Midterm Journal Entry 2: pulse sensor Runner’s band 

    The look at feel for my project is practical and simple. I want to embed the pulse sensor and an array of lights and possibly a speaker into a cotton wrist band. The lights that are aligned linearly with in the band will gradually light up appropriately as the users heart rate increase or decreases. The battery will also be embedded with an pocket that can be easily accessed when changing it. I also would like to add a light sensor as an on and off/reset switch.

    -What surprised you?-

    The wiring is fairly simple so I quickly wired up one LED at the start and attempted to slip my newly purchased arduino NANO into my wristband. The pins on the NANO make it extremely difficult to cleanly place inside the band and also make it uncomfortable to wear. Also, the led itself is rather large.

    So I have decided to use a lily pad and possibly some smaller flatter LEDs if I can find them. I think I’ll also steal a small speaker from a pair of headphones.

    I hope to have a usable and integrated prototype by Monday.

    Any suggestion from any of you would be awesome.

  • mikesusol 12:27 am on March 23, 2012 Permalink | Reply  

    Robot prototype 

    I finally received my Speakjet from Sparkfun so I spent some time carefully soldering that together so I can get my bot speaking. Not as simple as I had hoped. I’m still building and testing the components to make sure they will all fit and work inside the robot. I prototyped a few different sets of eyes based on the input of my classmates. One option is to mount the LEDs externally in plastic caps and another is to enclose the LEDs in little fabric “dumplings” to stitch inside the head. Both options create a different effect so I’ll keep testing. Ultimately, I think I’ll commit to mounting the LED heart inside the robot – it gives off a nice glow behind the printed black fabric. The pulse sensor is still giving me a little trouble so I need to work on the mounting situation in the robot arm. After that… code, code, code…and more code.

    • Yury Gitman 4:13 pm on March 24, 2012 Permalink | Reply

      Mike, if you are getting to much light “bleeding” from the eyes you can: 1) put a higher resistor on the LED so it’s more dim OR 2) make the dumpling smaller or 3) explore a way to stop light bleeding from the edges like a different dumpling material….?

      • mikesusol 4:23 pm on March 24, 2012 Permalink | Reply

        Thanks Yury. Hope you are feeling better. After testing about 15 different eye configurations, I finally committed to using the clear caps on the outside with a higher transistor rating to dim the LEDs a bit. Using the LED dumplings inside the head produced a cool effect but after some user testing people preffered the look of the externally mounted eyes. I’m now trying to make a similar decision about internally or externally mounting the heart LEDs. I’ll bring my prototypes to class on Monday.

  • naterudolph 5:18 pm on March 22, 2012 Permalink | Reply  

    Midterm Project 

    I choose to originally to do some sort of exercise ball that you would have to orient to various LEDs to the beat of your heart. That didn’t really seem to fit with the Pulse Sensor very well so I changed it, but kept the same components.

    I’ve always been awful at anything requiring balance, so I thought I would make some that could help a beginner exercise the muscles involved in balancing. This prototype just shows the LEDs marking your angle relative to the ground. A few of the practices you can do are walking backwards and forwards while trying to keep only one LED lit, or walking backwards and forwards while trying to smoothly go through all of the LEDs. Tightrope walking also needs to have a level of relaxation, so the pulse sensor will be included once I get another board, to help you slow down and practice calmly moving through the exercise.

  • adamsabh 8:22 pm on March 20, 2012 Permalink | Reply  

    New Speaker Troubleshoot 

    Here is another demo of the speaker trouble I am having.

    I upgraded resistors from 10K to 330. Let me know what you think about this. I could be getting just fine readings, but am just being thrown off by the Processing visualizer.

  • naterudolph 12:20 am on March 20, 2012 Permalink | Reply  

    Here’s the video to that orchestra Adam mentioned… 

    Here’s the video to that orchestra Adam mentioned in class today:

  • adamsabh 9:33 pm on March 19, 2012 Permalink | Reply  

    Pulse Sensor Troubleshooting 

    So as you know I have had an extremely hard time getting the Pulse Sensor to cooperate with my computer (much like Mike).

    I do believe I have found the largest source of my problem though. The speakers that we purchased from SparkFun severely interferes with the PulseSensor signals. I have a few videos that I will post demonstrating the trouble that the speakers gives me.

    When playing a single tone in unison with the LED everything is fine, but as soon as you step up the complexity of the speaker all hell breaks loose and the sensor goes into a frenzy.

    • Yury Gitman 1:59 pm on March 20, 2012 Permalink | Reply

      Did adding the 300 ohm (what you had on hand) resistor to the speaker help with the noise level of the PS reading? Ideal resistor for the 0.25w 80ohm speaker is 100ohm resistor for Arduino. But 300 ohms will work, it will just make the sound more dim.

    • Adam 3:46 pm on March 20, 2012 Permalink | Reply

      I haven’t yet but I will tonight and let you know how that pans out.

  • Joe Volpe 7:09 pm on March 19, 2012 Permalink | Reply  

    Pulse Sensor:iteration 2 

    My second iteration was an experiment of creating a different shape with the fabric provided and adding additional circuits and leds, and an embedded speaker to work with the pulse sensor.

    I began to see the limitations of using an arduino uno board with the pulse sensor as I would have enjoyed using pwm pins with this project to fade the lights but the timers are being devoted to the pulse sensors.

  • Joe Volpe 5:59 pm on March 19, 2012 Permalink | Reply

    Pulse sensor: iteration 1 

    For my first use of the pulse sensor and its accompanying code, I created a heart as instructed on the pulse sensor website and embedded my arduino uno board inside it. I then powered my board with a 9volt battery. Performing this task allowed me to gain a feel of working with fabric as I have never worked with fabrics or sewing before. While doing this I also learned that the fade loop within the code actually disrupts the pulse sensors count, and the pulse was not accurate until this bit was commented out. In my next iteration I plan on creating an additional plush toy with additional circuits using more digital pins on my arduino uno board.

  • Yury Gitman 7:15 pm on March 12, 2012 Permalink | Reply  

    Fabric, stuffing, and 9-volt batt packs. 


    Supplies for fabric and stuffing are in the last cabinet in pcomp lab. With sign on it “for wireless class only”. Please take what you need an leave materials for others. But feel free to use it all if you are the last person.

  • Yury Gitman 10:20 pm on March 8, 2012 Permalink | Reply  

    Major Studio – Midterm Assignment 

    Create a Bio-Feedback Experience.

    Description:  Use Heart-rate to create a Bio-feedback artifact/experience which allows a user(s) to understand and interact with their heart-rate.

    Pick One:

    1)  Single User:  User should understand if their heart-rate increases or decrease.  There should be a “feedback” loop in the experience, in which the user is able to gain skills to control their heart-rate up or down.  [Can work in team of 2, One Integrated Prototype per person required.]

    2)  Multi User: Create an experience/artifacts in which more then one users can sync their heart-rate, learn to control their heart-rate, or use their heartbeats in a play experience. [Can work in a team of 2 or 3. One Integrated Prototype per person required.]

    Project Requirements:

    Project should be fully enclosed and battery operated.

    Monday 19th- Present 1-2 Implementation Prototype(s), 1-2 Look and Feel Prototype(s), and 1-2 Role Prototype(s).

    Thursday 22- Present 1-2 Implementation Prototype(s), 1-2 Look and Feel Prototype(s), and 1-2 Role Prototype(s).

    Monday 26th- Present final Integrated Prototype.

    Thursday 29th- Document Project with 2 minute video.

  • adamsabh 2:00 am on March 2, 2012 Permalink | Reply  

    Dedicated to all the Haters 

    I dedicate this post to all of the people that doubted me in Major Studio.

    I would also like to point out that I am the 3rd homework post out of all of you. BOYA!

  • Joe Volpe 1:20 am on March 2, 2012 Permalink | Reply  

    Button Board 

  • naterudolph 5:55 pm on March 1, 2012 Permalink | Reply  

    SparkFun Beat Box 

    I’ll talk about it in class so there’s no need to cover everything here, but for anyone that’s super bored here’s a blog entry about some of the process for this.

    Here’s what I have so far for the project:

    The connections on the tiles need to be made more stable so you don’t have to hold it down to ensure it’s connected. Right now the top left washers cycle through the speed of the beat, and get reset to zero. Eventually I’d like to made it so the speed fluctuates up and down, but for now it’s still an easy way to lock into a speed you want to use.

    The bottom two sets of washers have some older code on them right now that’s pretty boring sounding and I’ve just been using to test things out. Eventually they will allow you to set certain parameters over the beat being made.

  • adamsabh 9:02 pm on February 27, 2012 Permalink | Reply  

    Not 1….but 2 Buttons! 

    My video


    No problems this week. It went surprisingly smooth.

    • naterudolph 9:40 pm on February 27, 2012 Permalink | Reply

      2?! What kind of electronic wizardry is this??

  • naterudolph 4:35 pm on February 27, 2012 Permalink | Reply  

    2 buttons, 2 LEDs 

    I tried to upload the Fritzing diagram with the Arduino code, but the Fritzing site is down at the moment.

  • Joe Volpe 1:03 am on February 27, 2012 Permalink | Reply

    Emotion LED’s inside a box project 

    I found this project to be very rewarding and refreshing. I was surprised about how quickly it came together once I had obtained all of my supplies. Time is always an issue especially when working full time and attending courses.

    Below is a video of my first iteration of this project. Soon I’ll be wiring up a speaker that will play 8 bit sound effects to accompany this box of lights.

    Be aware that the video trails on a bit as I didn’t cut the music correctly. The videos is over after the calming section fades to black.

  • adamsabh 7:32 pm on February 21, 2012 Permalink | Reply  

    LED Box 

    What I found most challenging for this project was getting my individual  functions to loop once the function was called upon. I had a hard time figuring out how to order my functions and to get them to act as an individual function instead of take on elements of others while performing. I knew the problem lay in my coding so it was mostly a guess and check system during its building process.

    I am still struggling with adding characteristics to my functions. I cant seem to get the code to perform certain actions within the function without jeopardizing the entire functionality of the segment.

    However, I am proud of the way my box cam out. Its a simple, clean and very effective way of presenting the LED lights. It looks great when lite up in a dark room.

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