La physique en jeux : muonsento

Des étudiants de création numérique et d’illustration scientifique de l’Ecole Estienne ont créé ensemble cinq jeux en ligne. Leur seule contrainte : partir chaque fois d’un article scientifique récent.

Magnétisme, métamatériaux, quantique, chimie moléculaire, physique des particules, tout y est passé ! Et voilà les 5 jeux, qu’on vous invite à tester vous même.

The creation of the lock uses the free and open source application Phyphox. This application allows access to the measurements of the different sensors present in a smartphone; it was not designed to make locks, but it is highly modular and can be diverted from its primary use. To do this, you only need to follow 2 steps: first, modify a small program and then transmit this program to phyphox.

We propose hereabove two examples of programmes to be modified to adapt them to your uses. The comments indicate what can be changed to personalise them.

The first example allows you to create a lock using 3-axis sensors: acceleration, acceleration without taking into account gravity, rotation speed or magnetic field.

The second example uses 1-axis sensors: pressure, light (Attention, some phones, especially iPhones, do not allow access to this last sensor, and only top-of-the-range smartphones will have all these sensors).

In these examples, the experiment is first launched with the triangular button at the top right, and the secret code is unlocked by holding the smartphone for 2 seconds vertically (1st code) or by lighting it strongly at more than 300 lux for 2 seconds (2nd code). See video.

Edit the files in a text editor (such as the Windows notepad or a program editor). It is possible to set the duration of the manipulation to be carried out, the direction in the case of a 3-axis sensor and the thresholds (e.g. illuminance higher than 1000 lux or lower than 200 lux), the secret code revealed by the application, etc.

However, these example programmes only allow simple handling. It is not possible to link two tests (telephone vertically for 1s then horizontally for 1s) and it is not possible to combine conditions (telephone vertically and light off). Basic programming in XML and reading the Phyphox documentation will allow the most motivated people to do this.

To transfer the programme to players’ smartphones, the simplest solution is to have a Dropbox or Google Drive account. You can also drop the programme on another server as long as you can retrieve a corresponding web link.

Transfer via email

• Send the file as an email attachment. The player must open the message from his smartphone, as phyphox is already installed, then click on the link that will open the program in Phyphox.

Transfer via Dropbox

• Drop your file in the dropbox and then retrieve the sharing link, in the form https://www.dropbox.com/s/xxxxxxxxx/tuto_cadenas_1axe.phyphox?dl=0
• Create a link by crawling the final “dl=0” with “dl=1 “
• When the end user clicks on this link on his smartphone (already equipped with phyphox), the lock will be installed in the phyphox menu.
• You can also create a QR code associated to the link via https://www.qrcode-monkey.com/ The end user will be able to scan it directly from phyphox via the big “+” button on the menu.
• The player can then choose whether or not to save the lock on his phone. If he saves it, he must find the experience in the list. The player just has to press the “Play” button in the top right corner and do the correct manipulation.

Transfer via Google Drive

• Drop your file on the drive then copy the share link. It should look like this: https://drive.google.com/file/d/xxxxxxxxxxxxxxxxxxxxxx/view?usp=sharing.
• Transform this link by copying the part between d/ and /view in this form: https://drive.google.com/uc?export=download&id=xxxxxxxxxxxxxxxxxxxxxxx.
• When the end user clicks on this link on his smartphone (already equipped with phyphox), the padlock will be installed in the phyphox menu.
• You can also create a QR code associated to the link via https://www.qrcode-monkey.com/. The end user will be able to scan it directly from phyphox via the big “+” button on the menu.
• The player can then choose whether or not to save the padlock on his phone. If he saves it, he must find the experience in the list. The player just has to press the “Play” button in the top right corner and do the correct manipulation.

Via a Web Site

• Upload your file *.phyphox on the web site.
• Create a link towards this file, exchanging the address prefix “https://” by “phyphox://”
• You can also create a QR code associated to this link.

Ce site web décalé est notre façon à nous de raconter le confinement de notre équipe “La Physique Autrement” et de nos collaborateurs.trices de l’équipe du COMPAS. C’est avec eux tous que nous avons passé ces étranges deux mois confinés à concevoir des tas de projets et échanger sur notre expérience collective.

A vous de le découvrir et tout ce qui s’y cache, notamment les projets créés pendant le confinement.

Chaque année, le grand public et les scolaires viennent visiter la Faculté des Sciences d’Orsay. Mais en 2020, suite à la crise sanitaire, les visites sont annulées. On décide alors de concevoir un jeu de piste immersif et… à distance pour le remplacer ! Une nouvelle forme d’événement qui pourrait se décliner dans bien d’autres contextes…

Add sensors to your smartphone to measure acceleration, angular velocity, temperature, light intensity, magnetic field, or voltage? It’s possible for less than 40 euros!

The Arduino Nano 33 BLE Sense board has all these sensors, and can easily send its measurements to your smartphone via Bluetooth, communicating with the phyphox application. We have simplified the process as much as possible: you upload our programme to your Nano board, you add the phyphox experiments to your smartphone with our QR code, and that’s it: you can start your measurements…

Measurements can then be taken without endangering the smartphone (a free fall, for example), but also compensate for the lack of sensors on some smartphones. This small board of just a few centimetres becomes a particularly useful tool for physics teachers wishing to use smartphones for practical work, but also for all curious people interested in a physical measurement tool in their pocket.

The Arduino Nano 33 BLE Sense board can be easily found at a very affordable price; we freely distribute all the programs to access the sensors, as well as a list of equipment. We also distribute the 3D printer plan of a compact and solid box that protects the board during use. We also have a program compatible with the Arduino Nano 33 BLE Sense REV2 board, which is very similar.

Here is a detailed How-To to guide the configuration of both smartphone and nano board:

To go further, here are the source documents and a short pdf tutorial. If you are used to coding, the programs can easily be adapted to your needs.

A new version of the phyphox experiments has been proposed by Sebastian J. Spicker, from the astro-lab team of Cologne University, and implemented together with our team. This new version 1.2 offers a German translation and a more “phyphox-like” look and feel to the experiments. This is the version that will be downloaded when you follow the tutorial above.

A complete German tutorial on how to install and use the Arduino nano is available on the astro-lab website.

• Detailed “How to Install” (German);
• Short “How to Install” (German);
• Connections and protection tutorial (German).

The previous version of the phyphox experiments can be found here, for archival purposes.