Activities

2026 • Claude Fable 5 — 3D maze web app

Development of an Android application, maybe one day intended for the Play Store.

• In Dart/Flutter

• GUI prototype in C++/Qt

• Functional prototype in php/SQL

• Purpose still confidential.

• Further deployment foreseen for the Apple & Microsoft App Stores as well.

In the context of learning Qt.

• A few additional explorations and experiments like:

  • original orthogonal object persistence mechanism,

  • multithreading,

  • portability (tested on Windows, macOS, android, linux....)

Qt

• Qt/C++ with cmake/ninja

• Coursera example builds, and runs (cf link), on:

  • Windows

  • macOS

  • Android

  • Ubuntu

  • RedHat

  • FreeBSD

• Visual C++, g++, clang

• Environment: Perforce on a NAS, installed with Docker.

• Learning QML, developing an application on Android (iOS planned later)

Embedded development learning (early stage)

• Arduino MKR1000 / MKR1400 (so still quite high level so far)

• C++/11

• Projects so far:

  • lot of small explorations

  • protothreads, interruptions

  • small web server allowing to control the hardware, interruptions, protothreads and connections

  • small clock/chrono/alarm, with NTP sync (still in development, if it is worth to continue: not much to learn anymore from this project so far)

• To do list

  • environments: python, assembler

  • hardware: STM32F103C8T6, ESP8285, ATTINY85

SQL

• Refreshed some practice, while helping a student for his end of term paper, with the following SQL. Not extraordinary, but it provides an idea of what I'm able to do (or not):

select distinct
   a.id_member,
-- all other needed fields : name...
from matchs m,
          members a,
         time t
where
                m.id_match = 2   -- !! here variable with id match ###########
         and a.function = 'Referee'
         
         and  ( m.id_referee1 = 0 or  m.id_referee2 = 0 ) -- only matches without two referees

         and  ( select count(*) from availability -- referee availability
                           where   d.date=m.date 
                                 and a.id_member= d.id_member
                                 and (          ( d.hour*60  

                                                        between m.hour*60+m.minute and  (m.hour+2)*60+m.minute-1)
                                           or    ( (d.hour+1)*60-1  

                                                        between m.hour*60+m.minute and  (m.hour+2)*60+m.minute-1)
                                       )
                  ) = if( m.minute != 0, 3, 2) -- 2 slots if match starts at xx:00, otherwise 3 slots

                                     -- but if should be still checked if there is no already assigned match in conflict

     and not exists(select mm.id_match
                     from matchs mm,
                         time t,
                         hall s1,
                         hall s2,
                         settings p

                      where mm.id_match != m.id_match -- other match
                       and a.id_member in ( mm.id_referee1 , mm.id_referee2 ) -- assigned to this referee
                        and m.date = mm.date
                       and a.id_travel_type = t.id_travel_type 

                        and s1.id_hall = t.id_hall_1
                       and s2.id_hall= t.id_hall_2
                       and p.nom='preparation_delay'
                           -- travel before
                       and (   (        t.id_hall_1= mm.id_salle
                                and t.id_hall_2= m.id_salle
                               and (mm.hour+2)*60+mm.minute+t.time +s1.access_time+s2.access_time

                                      <=  m.hour*60+m.minute - p.value
                                    )
                           or
                             -- travel after
                               (           t.id_hall_1 = m.id_hall
                               and t.id_hall_2 = mm.id_hall
                               and (m.hour+2)*60+m.minute+t.time +s1.access_time+s2.access_time

                                           <=  mm.hour*60+mm.minute - p.value
                                 )    )

                    )
order by m.id_match