Notizie selezionate in giro per la Rete

Gesture/Pattern Recognition Without Camera : TOF Sensor & SPAD Array

Un lettore di comandi gestuali realizzato senza telecamera e che usa il VL53L1X TOF e un array SPAD per leggere una matrice di 16×16 punti.

Fonte: https://www.instructables.com/Dont-Feed-the-Grumpy-Hedgehog/

How a Moving Platform for 3-D Printing Can Cut Waste and Costs

Una stampante 3D con il piatto di stampa suddiviso in tanti elementi quadrati di qualche centimetro di lato che si possono sollevare indipendentemente uno dall’altro. In questo modo si adatta al profilo dell’oggetto da stampare e riduce di molto il tempo e lo spreco di materiale per i supporti.

Fonte: https://viterbischool.usc.edu/news/2021/04/how-a-moving-platform-for-3-d-printing-can-cut-waste-and-costs/

ThermoBots: Microrobots on the water

Piccoli oggetti che galleggiano sull’acqua e che vengono mossi tramite un raggio laser.

Fonte: https://techxplore.com/news/2021-04-thermobots-microrobots.html

Therms-Up!

Esperimenti fatti con una normale stampante 3D a fusione passando con diversi tipi di pattern su fogli di diversi tipi di plastiche. Si creano cosi punti di fusione, dove c’è stato contatto con l’estrusore, e intercapedini. Nelle intercapedine  viene poi soffiata aria per ottenere forme 3d ed oggetti che si muovono.

Fonte: https://tangible.media.mit.edu/project/thermsup/

Log Book With Computer Bug

Uno dei primi bug “documentati”. Il registro si trova al National Museum of American History.

I meta-data del log book sono:

Title: Log Book With Computer Bug
Smithsonian Record ID: edanmdm:nmah_334663

TITLE
Log Book With Computer Bug

METADATA USAGE
CC0

GUID
http://n2t.net/ark:/65665/ng49ca746a3-b8b7-704b-e053-15f76fa0b4fa

DATA SOURCE
National Museum of American History

DIRECTOR
Aiken, Howard Hathaway

MAKER
Harvard University

MAKER
IBM

MAKER
Harvard University

MAKER
Aiken, Howard

PHYSICAL DESCRIPTION
tape (overall material)

PHYSICAL DESCRIPTION
paper (overall material)

PHYSICAL DESCRIPTION
cloth (overall material)

PHYSICAL DESCRIPTION
ink (overall material)

PHYSICAL DESCRIPTION
biologicals (overall material)

MEASUREMENTS
overall: 1.5 cm x 48.4 cm x 29.5 cm; 9/16 in x 19 1/16 in x 11 5/8 in

DESCRIPTION
American engineers have been calling small flaws in machines "bugs" for over a century. Thomas Edison talked about bugs in electrical circuits in the 1870s. When the first computers were built during the early 1940s, people working on them found bugs in both the hardware of the machines and in the programs that ran them. 

DESCRIPTION
In 1947, engineers working on the Mark II computer at Harvard University found a moth stuck in one of the components. They taped the insect in their logbook and labeled it "first actual case of bug being found." The words "bug" and "debug" soon became a standard part of the language of computer programmers.

DESCRIPTION
Among those working on the Mark II in 1947 was mathematician and computer programmer Grace Hopper, who later became a Navy rear admiral. This log book was probably not Hopper's, but she and the rest of the Mark II team helped popularize the use of the term computer bug and the related phrase "debug."

LOCATION
Currently not on view

PLACE MADE
United States: Massachusetts, Cambridge

CREDIT LINE
Transfer from United States Department of Defense, Naval Surface Warfare Center

ID NUMBER
1994.0191.01

CATALOG NUMBER
1994.0191.1

ACCESSION NUMBER
1994.0191

DATE MADE
1947

OBJECT NAME
log book

SUBJECT
Computer Bug

Immagine: Courtesy of the Naval Surface Warfare Center, Dahlgren, VA., 1988., Public domain, via Wikimedia Commons

Fonte: https://americanhistory.si.edu/collections/search/object/nmah_334663

This FPC-Based Stepper Motor "Oversteps" the Mark of What We Thought Was Possible with This Tech!

La realizzazione di un motore stepper usando bobine stampate su un circuito flessibile FPC (Flexible Printed Circuit).

Fonte: https://www.hackster.io/news/this-fpc-based-stepper-motor-oversteps-the-mark-of-what-we-thought-was-possible-with-this-tech-fb61192cf6c9

3D-printable shredder

Un trituratore di stampe 3D stampato in 3D.

Fonte: https://hackaday.io/project/175900-3d-printable-shredder

Sprayable User Interfaces

Questi inchiostri conduttivi sono assolutamente da provare!

Per capire meglio il funzionamento guarda questo video: https://www.youtube.com/watch?v=UXzyFbqGYOU

Fonte: https://hcie.csail.mit.edu/research/sprayableuserinterfaces/main.html

More science with less: evaluation of a 3D-printed weather station

Una interessante comparazione tra una stazione meteorologica auto costruita e una della rete Mesonet dell’Oklahoma.
Spoiler: i risultati sono del tutto comparabili.

Fonte: https://amt.copernicus.org/articles/13/4699/2020/

PolySense - Augmenting materials with electrical properties

L’uso di vernici piezoresistive per trasformare un normale tessuto in un sensore.

Fonte: https://hackaday.io/project/168380-polysense
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