FP - Bedroom

FP - Bedroom

by aksuzuki diegohuyke mrorton | updated January 30, 2015

Dulce De Leche is focused on revolutionizing the modern bedroom experience. It's composed of MIT Students Aya Suzuki ('18), Diego Huyke ('17) and Matthew Orton ('16).



This is the final project page for team Dulce De Leche.


For this project, we wish to observe and identify needs in the bedroom leading to interactive solutions.

January 13, 2015 at 11:07 AM
Created by diegohuyke
Comments (2)
Love this graphic - did you make it yourself? (:
almost 2 years ago
Jaja yeah I made this during class, but I want to remake it later in the month
almost 2 years ago

Four people inside. Three guys and a girl, all look like college students, carry a backspace, must be ~20 years old.

One is sleeping. Lies flat looking up with one knee in the air.

Everyone else is on their laptop.  Two are sitting down on the couches, one is on the ground.  I thought he was using the wall outlet to charge his laptop.  In reality, he was taking advantage of the workspace.

The sun hits super hard here. Everyone that was already here sat in a way to avoid the sunrays. There's also blinds but nobody has bothered to lower them.

I couldn't lower the blinds, someone tied the string around the window, preventing movement.

The windows are large but always half-covered by the blinds

One of the girls using her laptop in the couch left at 10:46.

The person who is sleeping fell asleep with his bag on top of himself. Maybe this is to ensure it stays safe.  Either way he has shifted some in the 15 mins so far.

Guy using his laptop near the wall, on the ground has left at 10:51.

The guy sleeping has gotten up, looked around and is trying to fall asleep again in a completely different position.

He's twitching his right foot so he's probably not asleep.

January 13, 2015 at 11:08 AM
Created by aksuzuki, diegohuyke, and mrorton
Comments (1)
I think it's interesting that someone was sitting on the ground when there's a ton of couch space! I've often walked by and seen a ton of people on the floor too.
almost 2 years ago

The bedroom that I'm studying presents different challenges from those of a regular one. First, this room is divided into two sections by a door. In one section there is a common space for lounging while the other holds just three beds. Furthermore, this room is interesting because it has three residents and therefore any problem associated with having a roommate is added with another.

I stayed in this room from about 1:30pm to 2am the next day. In my time, I was able to witness (for the majority of the time) the roommates hang out in the common area.  The most interesting use cases occurred when a roommate wanted to take a nap at around 9pm and when another went to sleep around midnight.

Because of the division of room this was made fairly easy as one room is used almost exclusively for sleeping.  The biggest problem was that as one of the roommates tried to go to sleep, the music from the common room invaded his space too much.

He therefore had trouble falling asleep for about two hours.


January 14, 2015 at 9:15 AM
Created by diegohuyke
Comments (0)

  • College girls - freshmen
  • Live in Simmons
  • bed elevated from floor to around hip level
  • has to hop on and off bed
  • 7 drawers around/under bed
  • uses drawers under bedside table most often
  • part of extension cord on bed
  • desk light on bed
  • likes to study on bed lying flat
  • likes to watch TV on bed through phone and earphones
  • sleeps head away from bedside table
  • bedside table has clothes, heater, mirror, lotion, hand sanitizer 
  • 3 pairs of shoes and 1 umbrella on floor next to bedside table
  • salt residue near shoes (unable to clean off)
  • laundry basket and luggage under bed
  • eats snacks on bed, but has dinner/drinks at desk
  • can only sleep in the dark
  • has to squat to look at mirror on bedside table
  • sleeps with phone for alarm clock
  • makes bed/smoothens out sheets over pillow
  • 1 sheet, 1 pillow
  • 5 posters of varying sizes above/around bed
  • socializes outside in 3rd floor lounge, bedroom is more for privacy/personal time
  • on earphones or laptop a lot
  • jacket/coat on bed but bag on chair
  • shelf around the corner of bed
  • has food (banana, pears, nuts, tea), medicine, shower utilities 
  • no books on shelf, notebooks are all on desk
  • closet opposite shelf
  • hangs coats/jackets twice
  • moved to desk to focus on work


  • objects were not elevated at the right height
  • inconvenient to keep moving from desk to bed, from bed to desk several times
  • desk is used more as storage
  • outlet inconveniently placed
  • certain positions on the bed are not as comfortable (lying down vs. sitting up against the wall)

January 14, 2015 at 9:32 PM
Created by aksuzuki
Comments (0)

January 15, 2015 at 10:05 AM
Created by aksuzuki
Comments (1)
Great job with these sketches - very clear and well thought out.
almost 2 years ago

January 15, 2015 at 10:07 AM
Created by aksuzuki and diegohuyke
Comments (1)
Nice start to these sketches. It's helpful to title ideas with a "headline" so people can quickly get a sense of what it is. Also, try writing your descriptions a little larger next time to make it more legible.
almost 2 years ago

Click here to add a step description!

January 15, 2015 at 10:07 AM
Created by aksuzuki
Comments (1)
I would play around with your text to image ratio with your sketches - try to enlarge your sketches and reduce the amount of text. Also, it helps to draw the sketches on plain white paper with dark marker to improve legibility.
almost 2 years ago

January 15, 2015 at 10:13 AM
Created by aksuzuki
Comments (0)

January 16, 2015 at 9:49 AM
Created by diegohuyke
Comments (0)

- The Bed Room Occupant, or BRO, grabbed cereal from his room before moving to the kitchen to make himself a snack  before bed.

- He charged his laptop and cleaned up his desk a bit

- The bed isn't made, there are earplugs ad an alarm clock on the night stand amid what I perceived as random junk

- Important documents are taped to the wall by the door

- Walls are decorated with tokens of past memories and heritage

- Guitars crammed with an amp behind the door

- BRO started brushing his teeth in the bathroom but proceeded to the bedroom  for the middle chunk of his teeth brushing

- Powered down his computer, emptied his pockets on his night stand, folded his pants and put them back in the drawer

- Moved a trash can by his bed and a tissue box on the night stand before turning off the light

January 16, 2015 at 12:42 PM
Created by mrorton
Comments (0)

The three drawings are an actual alarm clock with wired sensors, a mobile phone alarm clock with wireless sensors, and what our design could possibly look like.

January 16, 2015 at 12:51 PM
Created by mrorton
Comments (0)

Includes details in the hinge of the rotating shelf.

January 17, 2015 at 10:37 PM
Created by aksuzuki
Comments (0)

Storyboards for the rotating shelf, one done in class. I wanted to showcase the multiple functions of the shelf by telling two different stories through the storyboards.

January 18, 2015 at 2:31 PM
Created by aksuzuki
Comments (0)

To construct the looks like model, the material we will require are: 

12" x 12" cotton sheet (x2)

4' wire

Blue foam.

We'll begin by carving out the blue foam into the shape of the alarm clock.  Note that even the buttons for the alarm clock will be made out of this.  After, we will paint the alarm clock black to resemble the final product.

We will sew the cotton sheets one atop the other with a thickness equivalent to the thickness of the force sensors. The separation will be made with blue foam.

Finally, to recreate the wire between the clock and the pressure sensing pad it would be easiest to just use wire.

This completes the construction of the looks like model for our product.

With this looks like model, we hope to answer the following questions:

(1) Is the alarm clock interface easy to use? (Are the buttons natural)

(2) Is the thickness of the pressure sensor noticeable for the sleeping person?

(3) Is the wire awkward to have near your bed?

January 20, 2015 at 5:57 PM
Created by diegohuyke
Comments (0)

Our works-like model will focus on the mechanical aspects of our alarm clock, including the functions of the buttons on the alarm clock and the pressure sensors. Our prototype will address whether the alarm clock is effective in its design, but not too annoying that people would not want to use it. 

We can implement our prototype of the buttons of the alarm clock by working with the Arduino. We can use two buttons - one for the snooze button that will be placed on the top of the alarm clock, and the other for the on-off button that will be placed behind the screen - to mimic the interaction between the user and the product. We can test how loud and often the alarm should sound once the user presses either of the buttons. 

We can implement our prototype of the pressure sensors by calibrating how much pressure must be applied for the machine to recognize the person is still in bed. This will require us to purchase pressure sensors and test them on different positions of the air mattress. We may also have to add some cushioning/fabric to the sensors if they are uncomfortable to sleep in.


Arduino UNO and kit with additional jumpers and resistors

4 digit, 7 segment LED display, possibly this one: http://www.digikey.com/product-detail/en/MSQC4411C/1080-1182-ND/2675673

2 X force sensitive resistors, ideally these because of their area and weight range: https://www.sparkfun.com/products/9376

Button for user interaction with alarm, perhaps this:  http://www.digikey.com/product-detail/en/H8301ABBB/1091-1056-ND/2747887

Toggle switch for having an alarm or not, would prefer sliding switch but here is an option: http://www.digikey.com/product-detail/en/C3900BA/1091-1026-ND/2747857


January 20, 2015 at 11:30 PM
Created by aksuzuki and mrorton
Comments (0)

We've decided to go against using blue foam for the construction of the looks like model.  The reasoning for this is that although blue foam would be faster, accuracy is significantly less and it would not provide as close a model of what we want our product to look like.

We will use SolidWorks to CAD the clock by sides.  Then, we'll laser cut each side on 1/8" acrylic.

January 21, 2015 at 5:15 PM
Created by diegohuyke
Comments (0)

The above image is what the clock would look like minus the front display and the buttons.  Below are all the SolidWorks files available for download along with the DXFs for laser cutting.

January 21, 2015 at 5:17 PM
Created by diegohuyke
Comments (0)

Storyboard of the alarm clock pads idea

January 21, 2015 at 6:06 PM
Created by mrorton
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While browsing the selection of parts at RadioShack, I purchased a cheap alarm clock with the intention of taking it apart to see if there were any insights into the design of an alarm clock that we could gain.  The most notable finds are that the snooze button is a long bar with the two ends mounted onto push buttons, and the display is just a cutout of the segments that is illuminated by LEDs built into the main PCB.

January 22, 2015 at 1:20 AM
Created by mrorton
Comments (0)

For redesigning the alarm clock, we have decided to use a 3D printer.  Although the cost would go up, the finish of the product would be more aligned with the style we desired.  Curved edges will provide for a smoother finish.

January 22, 2015 at 5:38 PM
Created by diegohuyke
Comments (0)

We have decided to use a thin sheet of dark black acrylic to simulate the clock face. The holes in the acrylic will permit an LED to shine through it.  We also decided to use additional acrylic along with pushbuttons to recreate the snooze button.

January 22, 2015 at 5:40 PM
Created by diegohuyke
Comments (0)

We were able to turn the alarm on and off through a switch, which will eventually become the snooze button. We also attached a potentiometer so that we can set the alarm. 

January 22, 2015 at 7:53 PM
Created by aksuzuki and mrorton
Comments (0)

We utilized a Pugh chart to determine which were our three favorite ideas.  These three ideas were then studied/developed further below.

January 23, 2015 at 10:27 AM
Created by diegohuyke
Comments (0)

For the experience testing, we cut out a blue foam core alarm clock and set the time with a piece of paper.  Our user would lie down on the air mattress and we would simulate the alarm clock going off. 

From this, we learned that different users would require different ways of getting up.  In other words, the users for this alarm clock might not include every person who uses an alarm clock.

January 24, 2015 at 2:41 PM
Created by diegohuyke
Comments (0)

We were able to control the individual LEDs on the clock display screen. 


There is a fritzing diagram for a clearer picture of the circuit.  The single digit displays are a placeholder for a 4 digit display.  The actual pinout for the display used can be found on the attached datasheet.

January 25, 2015 at 5:33 PM
Created by aksuzuki and mrorton
Comments (0)

We added an on/off toggle switch and potentiometer to the circuit design. When the toggle switch is off, the user will be able to set the alarm clock. When it is on, the clock takes the potentiometer value as input and rings after the designated amount of time. 

January 25, 2015 at 5:37 PM
Created by aksuzuki
Comments (1)
that's quite a schematic - double check your switch on the right there... shouldn't the switch be connected to power?
almost 2 years ago

What's left to be implemented: 

  • displaying the timer/alarm
  • integrating the force sensor
  • making the snooze button work
  • making the alarm louder
  • finish CADing parts that will be 3D-printed 
  • solder everything

Parts we need to obtain: 

  • flat LEDs (2 colors)
  • buttons
  • switches


  • 1/26 MON
    • make code robust
    • integrate time code with features code
    • test pressure sensor
    • finish CAD
    • buy buttons/switches/knobs from RadioShack
  • 1/27 TUE
    • go through code together
    • 3D-print
  • 1/28 WED
    • solder
    • put circuit into 3D-printed part

User testing: 

  • 1/28 WED NIGHT and 1/29 THUR NIGHT

January 26, 2015 at 12:24 PM
Created by aksuzuki
Comments (3)
Just curious what you mean by flat LEDs. Would this be used to illuminate the alarm symbol? You can buy super bright LEDs that are a bit flatter than the bulb ones (like this: http://www.radioshack.com/radioshack-4-pin-dip-3mm-round-white-led/2760319.html#sz=60&start=53&tab=tab1)

For 3D printing, let's plan to print the part on Wednesday towards the end of class. If we print it at the end of class, it will likely be ready to use during Wednesday lab hours.
almost 2 years ago
I actually own some LED stickers (https://shop.chibitronics.com/shop/chibitronics-circuit-stickers-color-leds-add-on) that we were thinking of using. We just thought that the bulb LEDs weren't great in shining light directly through the small alarm symbol without shining through the PM symbol. But thank you for the link!
almost 2 years ago
Great, I'm glad you're using Circuit Stickers in your project. (:
almost 2 years ago

We were able to display when the alarm will ring. 

January 27, 2015 at 7:29 PM
Created by aksuzuki
Comments (2)
sweet! it seems pretty sensitive right now. maybe you can adjust the change needed to increment the time? or maybe it's just fast for testing. (:
almost 2 years ago
Thank you! It is pretty sensitive so I might either change the length of the time increments or test it with the bigger knob/potentiometer.
almost 2 years ago

We started using one sheet of bright yellow cloth, but ultimately the material was too thick and felt too uncomfortable so we scrapped it.

Instead we finalized the looks like model by using a white soft cloth attached to a string of black wire.

January 28, 2015 at 8:42 PM
Created by diegohuyke
Comments (0)

Today we completed, in SolidWorks, the design of the clock.  The double acrylic sheet design was scrapped in favor of a single one for the front.  The housing was extended a bit and made taller (the final result is 0.5" less long and 0.5" taller than the looks like model).  This was done in order to fit all the electronic components, see the assembly file below which contains mockups of all the components.  In addition, we added a curved edge on the back for a cleaner, rounder look.

January 28, 2015 at 8:51 PM
Created by diegohuyke
Comments (0)

Ultimately the rounded edge was scrapped and the body was made half an inch less long in an effort to reduce the cost of the 3D printing (which totals at ~$150).

January 29, 2015 at 10:15 AM
Created by diegohuyke
Comments (0)

FInally, after finsihing 3D printing of the body, we were able to fit all the components inside.  However, the short time meant that the wires were incorrectly palced and would be ruined when the case was closed.  For this reason we used rubber bands to keep the faceplates in place during the final presentation.

January 30, 2015 at 1:31 PM
Created by diegohuyke
Comments (0)

To finish the build of the final alarm clock, we shrunk all the components on the breadboard to a PCB that would more easily fin inside our casing

January 30, 2015 at 5:53 PM
Created by diegohuyke
Comments (0)