About my blog

The aim of the ITD course (ID4220) at the Delft University of Technology is to provide Design For Interaction Master students with in-depth theoretical and practical interaction design knowledge to help develop future products based on user-product social interaction. ITD proceeds through a sequence of iterations focusing on various aspects of the brief and the design, and culminates in an experiential prototype.

This blog is managed by Walter A. Aprile: please write if you have questions.



De meningen ge-uit door medewerkers en studenten van de TU Delft en de commentaren die zijn gegeven reflecteren niet perse de mening(en) van de TU Delft. De TU Delft is dan ook niet verantwoordelijk voor de inhoud van hetgeen op de TU Delft weblogs zichtbaar is. Wel vindt de TU Delft het belangrijk - en ook waarde toevoegend - dat medewerkers en studenten op deze, door de TU Delft gefaciliteerde, omgeving hun mening kunnen geven.

Preparation for User Test

After getting the feedback of postcard, we were still struggling with two keywords: believable & motivated . Ederly people is a special group with unique social needs, in order to make our design more reasonable we narrowed down the user group, from a community to only six people. Yeah, that’s true. People will be more motivated to contact each other if they know the specific status of each one.

So the next step is to figure out the layout of the "egg" , each person has three lights, which stand for happy, unhappy and cherish.We believe is more logical to divide surname and first name apart when users are tagging(breaking the egg) . Below is the rough model about our concept.

[object:flash:http://www.youtube.com/v/Zddxa1DF_Xk width:425 height:349] 

Let‘s see what our user test plan looks like.


1.       Find out the suitable colors for each emotion (happy, unhappy and cherish). And use the results in test prototype.
a.       Each team member should ask at least five people to describe what color could describe the emotion.
(figure 1) 
2.       Interviews
a.       to get to know each other
b.       keep the contacts
c.       Give a sense what we are heading for.
d.       Ask the questions about their social life and how they communicate with friends.
          Do you have a group of friends?
          Are they all in the same place?
          How do you keep in touch?
          What does your normal days look like?
Introduction of the concept
          Content: the story
          Sketching: explanation for the product
3.       Find out the suitable shape and size of the egg.
Clay moke-ups: 1-6
a.       Number the moke-ups
b.       Test with elderly people and ask them to choose the number.
4.       Show them the prototype
          Observe what they want to do when the egg starts vibrating.
          How they perceive the colors
          How they perceive the gestures
          To see if they can understand the tagging gestures in combination with the colors
          How they react on the lights of the other users.
          How they interact with the egg when they want to give feedbacks.
(figure 2) 
Figure 1 , results of color perception test.



 Figure 2, moke-ups for shape test. They should be numbered during the testing.


About the programming:

here the summary for what we will program, for building and testing.
Because we do not have a lot of outputs, we decided to use only one color for each other person in the network.

There can be 4 other persons in the network.
Then, the fifth person is the test person.

For this, we will use 3 single LEDS, not an RGB LED.
From the User test excel sheet so far, and keeping in mind which light we can make, we chose the following: 
yellow – happy
blue – unhappy
red – cherish

The vibration motor is triggered by a button we use: this is for faking the "sensor input" to motivate them to make a tag. 
Then, the contact sensor needs to feel when the egg is open/closed.
Something we want to integrate: switching on another light with vibration to fake that somebody else in the network made a tag; because we want to test their reaction to that I think.

For building:


  • the vibration motor needs to be fixed, otherwise it is not strong enough.
  • no RGB led but 4x one LED and 1 time 3 LEDs
  • the light sensor will not be build in – we can just fake it. it is too difficult to build now

For testing/concept:
making a tag

  • there is a network mode, different lights are on at users
  • we make the egg vibrate to indicate sensor data motivation
  • user opens it, is in tagging mode
  • other lights go off
  • gesture is recognized (light is faked)
  • when egg is closed, this tag color is put on their location

receiving a tag

  • we switch on another light, with vibration
  • this indicates that somebody else made a tag


The second movie will explain more.

[object:flash:http://www.youtube.com/v/ax9pkbMXZGs&feature=related width:425 height:349] 

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