Fujaba hits the Wall(-e) From a children's tale to initial modeling insights Pieter Van Gorp Ruben Jubeh Bernhard Grusie Anne Keller

Trigger

Presentation Structure 2

Background: Story Boarding [Diethelm et al.] 3

Background: Mindstorms [Jubeh et al.] 4

Presentation Structure 5

Fujaba/NXT @UAntwerp... [Van Gorp & Keller] 6

FactoryBot (2/5) 7

FactoryBot (3/5) 8

FactoryBot (4/5): eDOBS 9

FactoryBot (5/5): Story Diagrams 10

Fujaba/NXT demo, created by UA students 11

Presentation Structure 12

Assessment: Framework Use of EDOBS and Pictures Visual Patterns Recognizable 13 However, early on:  Story Diagrams with undesirable details Subtle differences in blocking vs non-blocking Many collab-statements, Little rewriting (RHSs) Inherent Complexity:  Hardware cable failures… Platform Issues (Lejos bugs, Bluetooth, …)

Assessment: Examples 14 followLine with “crippled hardware” “Wall-E rescues EVE” Need example for <16yr olds Wall-E = hot topic Problematic Story Diagrams Statechart approach = promising

Fujaba NXT “2.0”  15

Presentation Structure 16

17 Remaining Issue: Recognize bad style, i.e. know potential of statecharts Agenda: Extend set of examples

Wall-E Rescues EVE: followLine 18

Wall-E Example: Didactics 19

Open Issues (NXT Framework) Distributed Development Fujaba CVS merges OK at model-level, but CPU, Bluetooth, … differences hinder reproducibility Video recordings  Use of simulation adapters Also needed with >100 students… How to make simulator produce meaningful light sensor values based on motor movements? Full-blown environment modeling needed? Debugging e.g., stopping motors when suspending VM Leverage “design level debugging”, “JUnit codegen”, … [Geiger et al.] 20

Presentation Structure 21

Wall-E: Survey Results See http://cms.ieis.tue.nl/Beta/Files/WorkingPapers/Beta_wp294.pdf Bottom Line: Role-playing is fun, but the actual robot is cooler Hard to generalize, especially with heterogeneous groups 22 eDOBS “Instructor” interacts directly with motors, kids decide (instruct)

Conclusions 23