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.

Posts in category tagging1

Your biggest fan @ ITD2011 Expo

Hi all,

Studio 10 is the studio where it all happens. The biggest fan is there to support your guitar play! Untill 18:00 you can try out our band collaboration system concept. Some impressions:






Below you can find our final concept movie:

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This evening we will destroy our prototype, but the concept lives on! We have the pics and a lot of positive feedback and enthousiasm. We also got some great recommendations like targeting festivals where the played music is visualised in physical ways and for (music) educational purposes.

If you would like to continue on our project, please let us know by sending Jaap a mail. 

Thanks alot and our last Hugs & Kisses for Our biggest fans,

Tagging 1 

Your biggest fan, exhibition preview!

Hi there,

Just before the weekend we bring you sneak peak at our final prototype of our concept Your biggest fan. At the exhibition you will be able to try it out for yourself! We have a guitar present and a nice couch to get funky on, but keep it nice though. 

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We are putting the final touch on our poster and brochure right now, you get no preview of that.  

Proof you are Our biggest fan and check us out wednesday 29th of June @ the ITD 2011 Exhibition Studio 6, IDE faculty of the TU Delft! See ya!

Hugs & Kisses,

Tagging 1 

Writing report & tuning fine

The most boring phases of our project have now come.

Here you can see our Report responsible toiling on the final paper. 

On the other side of the room our groupmates are struggling with fine tuning every tube and fixing leakage of electricity. They were unwilling to comment.
Kind regards from your favorite group,
Tagging 1 

Finetuning the Tag-a-Track

After a succesful usertest last week, your favorite group came together this morning and disucssed the results. Some possible improvement areas were pointed out by our participant. A couple of things we have to change:

Tagging the just played piece of music proved to be too hard and too slow: too intervening with the playing itself. In the tested setup the user was able to grade the music by holding the guitar in the upright position longer to ‘increase goodness’ or keeping the neck pointed downwards to ‘increase badness’. So we decided, after a short meeting with Natalia Romero and Walter Aprile, to skip the grading and keep it simple: good or bad.
Holding the neck up or down also is not a easy movement, we expected it to be a cool and easy. The participant suggested small turning movements in the horizontal plane. We will incorporate these new movements.

The participant liked that the balls really reacted to the music he played. The key he was playing in was reflected in the positions and movement of the balls. This was interesting and fascinating to see, the participant liked this interaction. Also the people gathered around the test setup were intrigued by the display. The proposed system and display worked and the desired effect was created. On beforehand we were afraid the display would be boring, repetitive, but even when you were not playing it was fun to watch the tubes. 


Finetuning technical aspects 

Today we also finished some details of the technical aspects of the Tag-a-Track system:

– Finishing the casing. We were inspired by a piece of aluminium mesh lying around in Studio Do. We decided to use this material to cover parts of the electronics and create space underneath the fans for the air intake. We acquired a piece of aluminium plate with square holes and bent it in a trapezoid-rectangular shape. The holes in the material everywhere create the opportunity for the fans to work properly and cover them up partially.
 – Finetuning the tubes. Because all tubes are slightly different
in upper and lower diameter (they are conical; this way the ball can be
positioned better in the tube), the starting voltage (when the ball only
just doesn’t lift off) and the maximum voltage (when the ball hits the
top of the tube) have to be determined for all tubes.  This will result
in shorter reaction time and therefore better display. This is a quite boring and very time consuming task. Although a lot of work has been done, we are not yet finished. And as you know: God is in the details. This will boost the quality of our concept definitely.

We have to test our concept again soon, to verify the made changes and tweaks. Don’t worry, we promise to keep you up to date with nice pics and words. You also can stop by in Studio Do (Fac. of IDE, 2nd floor). Especially when you want to try the Tag-a-Track yourself. We have a guitar here, so that isn’t a problem. See ya!

Hugs & Kisses,

Tagging 1


Finally: the final prototype finished

Dear readers,

This friday we were eager to finally finish our final prototype. Then a proper user test can be conducted and last changes to the concept and prototype can be made. So a lot of dirty hands, redoing of previous work sadly and result.


Once again we came up with a nicer way to construct the transparent tubes. We now use tape to fix the transparent sheet for a short time, then heat it to stay round, release the temporary tape, heat it really good at the bottom to fuse the sheet. So after probably 40 tubes, 3 rolls of transparent tape we created the best conical tubes we are able to make.

We still used the wooden mold of the last time to shape the tube.
Electronic hardware
Last week we mounted all electronics on a PCB. It did cost a lot of time and eventually didn’t work. Today we plugged everything in the breadboard again. It looks quite neat and now has capacity to control our 8 fans.
In the end we ‘tagged’ all cable ends to make the tangled cable mess a bit more clear. 

The housing of the feedback system was painted last week. We choose a sober matt black. 



Final assembly!

Now we connected all fans and tubes and finetuning can begin. All tubes-fan combinations are slightly different and in order to control the ball’s height, they have to be adjusted in the Max patch. This time consuming job is important for a nice representation of the played music. As can be seen in the movie below, the balls do not react exactly in the same way and time.

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User testing

A guitar player we know came by and tested the prototype. The guitarist was explained the tubes would represent what he is playing. Also that he could tag his music by lifting the neck of the guitar. Then we just sat down and watched. We also asked what would be a nice movement to make while playing. Keeping the neck lifted turned not to be that handy. We will look into it next week. Below is some pieces of footage of the user test.

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See you next week!

Hugs & kisses,

Tagging 1 

Creating Prototype

Hi there!

Today we made some great practical progress! We finished all the tubes with ‘pain and effort’ and the Max-program is almost finished. Also the wooden base where the tubes will be attached to is done. We drilled the holes into a Norwegian wooden block. Next week we will Paint it black. Mikel has been busy soldering to connect all 8 delirous fans.

Halfway the day we were able to assemble the feedback parts: 
Below you can see a screen from our Max patch. You can see an 8 channel output which reacts on a sound input, like spectrum analysis.
Last week we conducted a small user test. We wanted to know what movement with the guitar was intuitive and practical. The movement up and down proved easy and only little interference with playing the guitar. Because last week we only had one tube working, a rich feedback could not be produced. So we cannot say anything yet if the user understands the feedback.
Hopefully, by the end of today we have a complete assembly of the final prototype. We will ask a guitar player to play a little song and give some feedback on our concept. We will keep you posted!
Hugs & kisses from your favorite group,
Tagging 1

Tagging 1: we came, we saw and made a shitload of tubes

Hi there,

Today we worked on expanding our prototype. We created a lot of tubes to guide the ping pong balls using a wooden mold we lathed ourselves. They had to be quite precise and slightly tapered. We rolled transparent sheets around it with tape. This seemed like an easy task, but the sheets proved to be quite hard to handle. So we produced a lot of crappy tubes. But in the end we got 4 good tubes.


In the meantime, our programmers duo improved the Max program. We are now able to control 4 fans independently and explored the possibilities of tagging using the accelerometer.

Finally, we had to deliver a Prototype plan. The last hours of the day we spent on this.

Hopefully next week our prototype will be in such an advanced state we can conduct a true user test. We expect to gather a lot of useful data here by input of the user. In general, we want to know if the user understands our concept, in detail we would like to know the following things:

 1. Does the user understand and like the way of tagging and doesn’t it disturb the playing?

 2. Does the tagging of the music make sense (giving meaning/value to the just played piece)?

 3. Does the user understand and interpret the feedback in the way we intended? (inspiring, incentive to play better, challenging, rewarding, etc.) 

Hugs & Kisses,

Your favorite,

Tagging 1 

You’ve got mail from Tagging 1

Dear reader,

We are happy to present our postcards to you!


Technical postcard 
Concept postcard


Presenting Nuttracking result

Last week we presented our result of the last nuttracking weeks. We finally got the fans working through an Arduino, a Phidget, MAX and a LED-board with opamp’s, capicitors and resistors. This was all necessary to be able to regulate the voltage driving the fans. Check the movie clip for a short introduction to the concept and a preview how it works.

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Next week you’ll receive two postcards explaining our concept and the technical break down, so keep track of your mailbox!

Hugs & Kisses,

Tagging 1 

Tag-a-Track interaction chart

Another message from your favorite team: Tag-a-Track!

We visualized the interaction of the Tag-a-Track to clarify some things. First, the musician plays and the feedback system will react on that (based on sensorial data and music analytics). Second, the musician sees the feedback and sees how his music is received. He may be inspired by it, tries to influence it, change it in some way. If he wants to ‘close a chapte’ of the session he can tag the just playes piece. This can be seen in the figure below.


This week we will work on prototyping the feedback system of our concept. It will be using ferrofluid and magnets to display intensity! We’ll be back soon!


Tagging 1 

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