Archivi categoria: Informatica

Ethec

La moto elettrica che vedete in questo video e in queste foto si chiama Ethec, è un prototipo sviluppato dall’Università di Zurigo in Svizzera e da qualche giorno è sulla bocca di tutti per due motivi principali: fa 400 km con una sola carica.

 

Sarà la prima moto elettrica con recupero energetico in frenata.

La batteria è composta da 1260 celle a ioni di litio ed è raffreddata da un sistema termoelettrico: una cella di Peltier abbinata ad una sistema di iniezione olio.  La capacità è di 15 kWh, con recupero energetico. I motori sono due, uno anteriore e uno posteriore, per un totale di 22 kW di potenza cioè circa 30 CV.

ethec side

ethec battery cooling

Battery Cooling: Battery cooling system with fan, pumps, a peltier element and an expansion tank. For a durable and powerful battery an efficient cooling is required. An air circuit discharges the heat from the oil circuit with the help of peltier elements. The oil circuit directly flows around the battery cells.

ethec battery structure

Battery Structure: Structure of battery including two modules from 1260 Lithium-ion-cells. In view, the regular arrayed circuit boards and perfectly placed temperature sensors, which control the cooling system precisely

 

 

Il Semaforo Arduino

Laboratorio di Informatica per Introdurre l’Interazione tra Computer Miniaturizzato e Realtà circostante.
Revisione 0.04

L’Unità Didattica si rivolge a chi desidera introdursi nel mondo dei Computer Miniaturizzati che interagiscono con la realtà circostante.

Il livello di difficoltà è basso, quindi è aperta a tutti i Gruppi di Interesse: dal bambino con il genitore all’insegnante che cerca stimoli da realizzare nel Laboratorio d’Informatica della sua Scuola.

La lezione introduce il popolare, soprattutto in ambito  della Didattica dell’Informatica nelle Scuole, Arduino.

Ai partecipanti verrà presentato il Kit Semaforo Arduino con parti da utilizzare nell’esperienza di Laboratorio:

  1. piccole schede computer Arduino Mega
    1. il contesto crea una prima occasione per utilizzare le schede Arduino
    2. schede dotate di sketch nella versione 0.18.08 che estendono il firmware di base con il comando semaforo
  2. pacchi batterie ricaricabili, con le usuali prese USB a 5V, da usare come Alimentatori
    1. sono introdotte le principali modalità di alimentazione delle schede Arduino
  3. cavi USB per collegare gli Arduino agli Alimentatori
    1. il partecipante utilizza il popolare standard USB per alimentare l’Arduino, ma poi anche per programmarlo e per controllarlo da computer
  4. piccoli emettitori di luce verde, giallo e rossa
    1. l’unità didattica utilizzare i popolari componenti elettronici emettitori di luce, LED, per realizzare un semaforo in miniatura
  5. cavi per collegare Arduino a tre emettitori di luce verde, gialla e rossa
  6. il programma di base versione 0.18.08 con modifiche specifiche che fa funzionare Arduino
  7. alcuni computer UNIX Linux Ubuntu da utilizzare per la programmazione Arduino
    1. primo approccio all’ambiente che permette di creare i programmi per Arduino mediante un computer
    2. con l’occasione introduciamo l’utilizzo di un computer UNIX Linux Ubuntu
    3. sarà poi possibile creare il nuovo scenario di controllare la scheda Arduino direttamente dal computer mediante cavo USB

La prima parte dell’evento ha l’obiettivo di introdurre i nuovi materiali e metodi a chi non ne ha mai avuto occasione.

Quindi i partecipanti potranno realizzare un vero e proprio semaforo in miniatura, che fa scattare, ciclicamente, il verde poi un breve giallo ed infine il rosso.

La seconda parte dell’esperienza viene introdotta dal problema di come variare le temporizzazioni dei colori.

Il formatore mostrerà

  • come collegare l’Arduino ad uno dei computer presenti
  • come cambiare il codice che la scheda Arduino esegue
  • e quali siano i valori da modificare per completare l’unità didattica

I partecipanti quindi completeranno in autonomia l’esperienza di laboratorio e, completata l’esperienza, avranno ben aperta una nuova prospettiva di ricerca, che realizza un fondamentale tassello nella sua Formazione di Tecnologie Informatiche di Base.

Calendario

  1. da definire
    1. Presso: da definire
  2. da definire
  3. da definire

Numero partecipanti

Previsti da 15 a 30,  con i quali ci sarà laboratorio ed interazione.

Propedeutico

Nessuna conoscenza, per tutti i gruppi di interesse. I bambini devono essere accompagnati, come sempre, da un genitore.

L’esperienza è rivolta a tutti i Gruppi di Interesse  ed ha un significato propedeutico ad ogni altra unità didattica in tema.

 

 

Didattica ed Intrattenimento

Didattica dell’Informatica. Revisione 0.07
Per contattare il Gruppo Didattico.

Calendario e Locandine Incontri
Esperienze di Laboratorio d’Informatica Elementare

  1. Incontro Introduttivo alla Didattica ed Intrattenimento con Arduino
    1. Locandina
    2. Data: 24 ottobre 2018 ore 19.00
  2. Il Semaforo Arduino
    1. Locandina
    2. Un Incontro
    3. date da definire
  3. Arduino Luci e Colori
    1. Locandina
    2. Ciclo di tre Incontri
    3. date da definire
  4. Sartoria Arduino
    1. Locandina
    2. Ciclo di tre Incontri
    3. date da definire
  5. Arduino Serra
    1. Locandina
    2. Ciclo di tre Incontri
    3. date da definire
  6. Il Telecomando Arduino
    1. Locandina
    2. Ciclo di cinque Incontri
    3. date da definire
  7. Arduino Led Streap
    1. Locandina
    2. Ciclo di due Incontri
    3. date da definire
  8. Arduino Music Light
    1. Locandina
    2. Ciclo di quattro Incontri
    3. date da definire
  9. Arduino Pet
    1. Locandina
    2. Ciclo di cinque Incontri
    3. date da definire
  10. Il Computer Tascabile RaspberryPi
    1. Locandina
    2. Ciclo di cinque Incontri
    3. date da definire

 

Unità Didattiche con Laboratorio di Tecnologia e Scienza

Gruppi di interesse

  1. Bambini, età da 8 a 13 anni con genitori
  2. Ragazzi, dai 14 ai 17 anni
  3. Giovani
  4. Studenti Universitari
  5. Insegnanti
    1. Scuole Elementari
    2. Scuole Medie
    3. Istituti Superiori
  6. Appassionati

 

 

Calendario Unità Didattiche

In corso di definizione.

 

 

The Linux Kernel Has Grown By 225k Lines of Code So Far This Year From 3.3k Developers

Even on an EPYC server with Optane 900p NVMe SSD storage, the gitstats process on the hearty Linux kernel repository is quite a task. But the process is done and offering a fresh look at the current Linux kernel activity in Git.

LINUX KERNEL --

Here are some of the findings:

The kernel repository is at 782,487 commits in total from around 19.009 different authors. The repository is made up of 61,725 files and from there around 25,584,633 lines — keep in mind there is also documentation, Kconfig build files, various helpers/utilities, etc.

Zero Motorcycles

Zero Motorcycles Inc. is an American manufacturer of electric motorcycles. Formerly called Electricross, it was started in 2006 by Neal Saiki, a former NASA engineer, in Santa Cruz, California. The company is now located nearby in Scotts Valley.

ZERO S ZF7.2 ZERO S ZF13.0 ZERO S ZF13.0 +Power Tank
City? 89 miles (143 km) 161 miles (259 km) 206 miles (332 km)
Highway, 70 mph (113 km/h)? 45 miles (72 km) 81 miles (130 km) 103 miles (166 km)
Combined? 60 miles (97 km) 108 miles (174 km) 138 miles (222 km)
Peak torque 78 ft-lb (106 Nm) 81 ft-lb (110 Nm) 81 ft-lb (110 Nm)
Peak power? 34 hp (25 kW) @ 4,300 rpm 60 hp (45 kW) @ 5,300 rpm 60 hp (45 kW) @ 5,300 rpm
Top speed (max)? 91 mph (146 km/h) 98 mph (158 km/h) 98 mph (158 km/h)
Max capacity? 7.2 kWh 13.0 kWh 16.6 kWh

 

How to Connect Your Android Phone to Linux via Airdroid

Airdroid is a unique and useful application that lets you transfer files, send SMS messages and control your phone through your PC. It is available within the Google Play store and the iOS App Store and provides a useful alternative if you need to grab a file but don’t have a USB cable at hand. While Windows has a full rich client that allows easy access to the features, those of us on Linux have to use the web-based interface, but this doesn’t make the application any less useful.

Smart ring

A smart ring is a wearable electronics device with advanced mobile components that combine features of mobile devices with innovative features useful for mobile or handheld use. Smart rings, which are typically the size of traditional rings or larger, combine the features of a mobile device, such as the ability to make payments and mitigate access control, with popular innovative uses such as gesture control and activity tracking. Smart rings can communicate directly with smart phones or personal computers through a variety of applications and websites, and operate without the need to carry a smart phone, such as when interacting with back-end systems on the cloud through or performing standalone functions such as activity tracking. They typically do not have a display and operate by contextual relevance, such as by making a payment when near a payment terminal, unlocking an electronic lock when near the lock, or controlling home appliances when making gestures in the home. Some smart rings have physical or capacitive buttons to use as an activation mechanism, such as to initiate a gesture.

 

 

In 2013, the English firm McLear released the first smart ring for sale. The market is currently around $25 million.

 

Security

Secure access control such as for company entry and exit, home access, cars, and electronic devices was the first use of smart rings. Smart rings change the status quo for secure access control by increasing ease of use, decreasing physical security flaws such as by ease of losing the device, and by adding two-factor authentication mechanisms including biometrics and key code entry.

Payments and ticketing

Smart rings can perform payments and metro ticketing similar to contactless cards, smart cards, and mobile phones. Security of the transaction is equal to or greater than contactless cards. The first smart ring to be created with contactless payments was the NFC Payment Ring, which was mass produced and unveiled at the Olympics Summer Games at Rio de Janeiro in August 2016.

Activity

Replicating smartwatches, smart rings provide features including activity tracking (i.e. step tracking), heart beat tracking, and sleep tracking (through measuring heart beats and movements). The smart ring form factor contains enough space to contain the same components as smart watches. Due to size constraints, smaller components are typically used in current smart ring products in market, such as smaller and less accurate accelerometers, and smaller batteries leading to lower battery life than smart watches.

Social

Smart rings provide social feedback to users and can be used to engage in the user’s environment in a way that other wearables and mobile devices do not permit. Ringly produces a women’s fashion smart ring which lights to notify the user when the user receives a text message, phone call, or other notification. This enables the user to be aware of the notification without having to constantly check her or his smart phone.

RFID / NFC Smart Ring – Size 12 – NTAG213

NFC (near field communication) technology is a great way to interact wirelessly with projects. With the RFID/NFC Smart Ring your ring can communicate with your smart phone/tablet, computer, or much more! Contains two MiFare Ultralight C – NTAG 213’s with 144 bytes of read/write memory. One is on the ‘inside’ of the ring towards the palm, the other is underneath the jewel. You can use tags to launch apps, unlock your phone, transmit a URL, control an Arduino, etc.

RFID / NFC Smart Ring - Size 12 - NTAG213

GNOME 3.30 “Almeria” Desktop Environment Officially Released, Here’s What’s New

After six months of hard work, the GNOME Project released today the highly-anticipated GNOME 3.30 desktop environment, a major new series that brings numerous new features and improvements.

GNOME 3.30 released

Dubbed “Almería” after the host city of the GUADEC (GNOME Users And Developers European Conference) 2018 event that took place in early July, GNOME 3.30 updates numerous of its core apps and components by adding new features and enhancements to make your GNOME desktop experience more pleasant.

What is your favorite Linux window manager?

While many Linux users have a strong preference for a window manager of choice, for those just making their way over from Windows or Mac, it may be hard to understand what a window manager is, or that it’s even something you have a choice in. A window manager is the part of your system that dictates how individual application windows look, and how you can interact with, control, and arrange them.

windows

  • Cinnamon (Muffin)
  • dwm
  • Enlightenment
  • GNOME (Mutter)
  • i3
  • KDE (KWin)
  • Openbox
  • Unity (Compiz)
  • Xfce (Xfwm)

India’s Zebpay Crypto Exchange Flash Crash: Bitcoin and Ethereum Price Fall

Zebpay, which is a big cryptocurrency exchange from India, has recently notified its users that it would not be able to let its users withdraw their tokens for INR if it did not have a supporting bank in a document titled “Prohibition on dealing in Virtual Currencies”.

India's Zebpay Crypto Exchange Flash Crash: Bitcoin and Ethereum Price Fall

After the notice was sent out, all the major cryptocurrencies, ranging from Bitcoin to Ethereum and Ripple were down by more than 10% in what is being called the India Flash Crash by some people.

20 Best Cryptocurrency Lending & Fiat Loan Blockchain Platforms To Use

Different cryptocurrency projects have been offering a wide variety of services for the cryptocurrency market. Some of the most important is the possibility to give crypto loans.

20 Best Cryptocurrency Lending & Fiat Loan Blockchain Platforms To Use

Cryptocurrency lending platforms work by connecting borrowers to a network of lender registered on the platform. In this case, borrowers receive their cryptocurrencies back once the borrower pays the loan. Most of the platforms have loans that are backs by assets, including real estate. But other platforms let users take loans that are backed by Bitcoin or other virtual currencies.

4 Massively Misunderstood Cryptocurrency Principles To Date

4 Key Misconceptions About Cryptocurrency

The rise of cryptocurrencies has been undeniable. With the rising trade value of bitcoins and ethereum it can be clearly seen that that the era of cryptocurrencies is upon us. In fact, financial institutions all over the world have claimed that Bitcoins are indeed a better investment than gold and other precious metals at this point in time. It is also interesting to note that in 2017, the United Nations sent financial aid to Syrian rescue camps via means of cryptocurrency (so as to minimize any internal losses).

4 Key Misconceptions About Cryptocurrency

Namecoin

Domain names are an essential part of creating a website. As they are hosted by centralized platforms, they are susceptible to censorship. Namecoin is a blockchain-based domain solution that eliminates this issue.