Prof. Dr. Dr. Daniel Hromada

  • daniel at

  • Room 313, Medienhaus

  • Sprechstunden 12:30 - 13:30

Tutors & SHK

  • Astrid Kraniger

  • Nikoloz Kapanadze

MODEA #2 Program


Date Topic
11.4 Introduction
18.4 Art & Artefacts
25.4 Tools & instruments
2.5 Material 
9.5 Modules and components
16.5 Making the Itty Bitty Beat Box
23.5 ECDF visit - Wilhelmstrasse 67
30.5 NO COURSE (Christihimmelfahrt)
6.6 Format 
13.6 Shell
20.6 Berlin Open Lab - Einstein Ufer UdK
27.6Optimizing & testing
4.7 Goal

Overall Entwurf


WiSe 2018/2019 Bootstrapping & exploring
SoSe 2019 Playing, specifying, defining
WiSe 2019/2020 E-paper
SoSe 2020 Machine learning, speech technologies, handwriting recognition
WiSe 2020/2021 Testing & optimizing
SoSe 2021 Deploying

WiSe 2021/2022

Main communication channel


MODEA #2 knot 4162 (i.e. )



You'll get the signature only when actively participating on creating of an artefact which DOES something, e.g.

  • digital primer

  • music instrument for algorithmic drum circle

  • garden guardian

  • digital primer

  • light source

Main principles


  1. M.Y.O.D. :: Make Your Own device

  2. Upcycle !

  3. Explore the "adjacent possible".

  4. Uniqueness and not mass production.

MODEA #2 - Forum


This is the place where we should start communicating.

Session 2 - Art & Artefact


Before doing the theory let's test our paper airplanes!



Some articles related to our course.

Session 3 - Tools and Instruments


Nik - soldering iron
Daniel - screwdriver
Anna - pen
Kohei - measure
Akif - Swiss knife
Gero - pen

Session 4 - Material & Components


Let's start making it real.

Anna - Water
Akif - Leather, Neopren
Kohei - Metal (Aluminium)
Gero - Displays  
Daniel - paper
Nik - wood, paper, cardboard, fabric, tin

What is nice:
Ceramic, Epoxy, Stones, Marble, Resin, Fibers

Nobody mentioned:
Plastic, Concrete,  



                                               Devices           Office          Daniel    Nikoloz         Georgy    Students    
Pi Zero w                                                        1
Pi Zero                                       1
Raspi 3B+                                  2                    
Raspi 4B+                                  2                     2
Raspi 3A+                                  2                    
Respeaker 4mic                                               2
Respeaker 2mic                                                                     1                                ?
Phat Dat                                                         1
Speaker Phat                                                  1
Witty pi small    2                       1                     1
Witty pi big                                                      2
Inky Phat                                                        1
Grove Sound                                                   1
Grove Ultrasound                                             1
Grove Gesture                          9?
Raspicam                                 1                     1                    1
PITFT                                                              1
Resistive HDMI                         1
Raspi B+                                  1                     1
Phat Stack                               1                      1
Skywriter                                 1                     1
E-ink                                       1
Capacitive HDMI                                              2
Strompi                                                          1
The Slate                                1 MISSING
Raspberrypi Charger               1 MISSING
E-ink 6 inch                             4
E-ink 9 inch                             2                      1 +1 BROKEN
E-ink 4.3 UART                        2                                                                                        1

Session 5 :: Modules and components


  • What is modularity ?

  • What are modules ?

  • What are advantages of a modular system ?

  • What are disadvantages of a modular system ? :: Phase 0 :: Permutations


Prof. Dr. Daniel D. Hromada (ECDF Juniorprofessor for Digital Education) and Nikoloz Kapanadze (Kunst und Medien; Tutor)
We present multiple digital artefacts which emerged first stage of construction of a digital Primer. These include: touchscreen&HTML5-based prototype; e-ink screen (recently broken) with touchless sensing embedded in an upcycled old book; and OID-enriched paper page from the Primer "Wir Kinder vom Zirkus Palope". 
Aside this, we'll present some additional digital artefacts exploiting the modularity and extensibility of Raspberry Pi technology: Make Your Own Instrument kits, touchless PONG-game, speak2listen headphones and a touch-the-plant botanics education setup. 


Session 6 :: Format


  • In what domains of human activity do we speak about formats ?

  • In these disciplines, what kinds of formats do we know ?

  • Can we imagine other types of formats ? What are their advantages ? What are their disadvantages ?

  • What kinds of formats should we use ?

Connecting a Bluetooth speaker to a Raspberry Pi Zero W running Raspian Stretch Lite


  1. sudo apt-get update && sudo apt-get dist-upgrade

  2. sudo apt-get install bluealsa

  3. sudo service bluealsa start

  4. Switch on your bluetooth device

  5. sudo bluetoothctl

  6. scan on

  7. pair XX:XX:XX:XX:XX:XX (replace the XXXXX with your device ID)

  8. trust XX:XX:XX:XX:XX:XX

  9. connect XX:XX:XX:XX:XX:XX

  10. exit

  11. aplay -D bluealsa:HCI=hci0,DEV=XX:XX:XX:XX:XX:XX,PROFILE=a2dp /usr/share/sounds/alsa/*

Respeaker 2 Bluetooth Alsa stream


arecord -Dac108 -f S32_LE -r 16000 -c 2 om.wav & sleep 1 ; aplay -c 2 -D bluealsa:HCI=hci0,DEV=FC:58:FA:BF:4E:0E,PROFILE=a2dp om.wav


AE49SOSERundgang R311 Artefact List


Artefacts presented at AE49SOSERundgang in R311 of UdK's Medienhaus

Credits: Nikoloz Kapanadze, Astrid Kraniger, Kohei Kimura, Akif Mehmet Sari, Ozcan Ertek, Anna Petzer

Coordinator: Prof. Dr. Dr. Daniel Devatman Hromada (ECDF Juniorprofessor for Digital Education)



Over the years we’ve seen the Raspberry Pi crammed into almost any piece of hardware you can think of. Frankly, seeing what kind of unusual consumer gadget you can shoehorn a Pi into has become something of a meme in our circles. But the thing we see considerably less of are custom designed practical enclosures which actually play to the Pi’s strengths. Which is a shame, because as the MutantC created by [rahmanshaber] shows, there’s some incredible untapped potential there.

The MutantC features a QWERTY keyboard and sliding display, and seems more than a little inspired by early smartphone designs. You know, how they were before Apple came in and managed to convince every other manufacturer that there was no future for mobile devices with hardware keyboards. Unfortunately, hacking sessions will need to remain tethered as there’s currently no battery in the device. Though this is something [rahmanshaber] says he’s actively working on.

The custom PCB in the MutantC will work with either the Pi Zero or the full size variant, but [rahmanshaber] warns that the latest and greatest Pi 4 isn’t supported due to concerns about overheating. Beyond the Pi the parts list is pretty short, and mainly boils down to the 3D printed enclosure and the components required for the QWERTY board:  43 tactile switches and a SparkFun Pro Micro. Everything is open source, so you can have your own boards run off, print your case, and you’ll be well on the way to reliving those two-way pager glory days.

We’re excited to see where such a well documented open source project like MutantC goes from here. While the lack of an internal battery might be a show stopper for some applications, we think the overall form factor here is fantastic. Combined with the knowledge [Brian Benchoff] collected in his quest to perfect the small-scale keyboard, you’d have something very close to the mythical mobile Linux device that hackers have been dreaming of.