At I/O, Google Will Be Tracking Things Like Noise Level And Air Quality With Hundreds Of Arduino-Based Sensors article tells that in the blog post, Michael Manoochehri, Developer Programs Engineer, outlines his team’s plan to place hundreds of Arduino-based environmental sensors around the conference space to track things like temperature, noise levels, humidity and air →
What Happened When One Man Pinged the Whole Internet article tells about a home science experiment that probed billions of Internet devices reveals that thousands of industrial and business systems offer remote access to anyone. Moore’s census involved regularly sending simple, automated messages to each one of the 3.7 billion IP addresses assigned to devices →
Tietoviikko reports that Finland (my home country) is the world’s best IT country according to World Economic Forum study The Global Information Technology Report 2013. According to the study, Finland is the world’s number one country when it comes to the economy’s ability to use information technology to competitiveness and prosperity. Finland has toppled Sweden →
Twisted pair Ethernet (10 and 100 Mbit/s) uses two pairs of wires. Ethernet (10 Mbit/s works well, 100 Mbit/s sometimes) can be run on the old telephone wiring. There some years ago quite a bit of interest in reusing old telephone wiring for Ethernet connections. Reusing old installed wiring for Ethernet works usually well if →
Twisted pair Ethernet (10 and 100 Mbit/s) uses two pairs of wires. 10BASE-T Ethernet was designed to be be used on CAT3 quality wiring. 100BASE-TX was designed to be used with CAT5 wiring or better. Since the early 2000s most new structured cable installations are built with Category 5e or Category 6 cable. There are →
The mobile phone turns 40 years old article tells that the first mobile phone was used by Martin Cooper to phone a rival at AT&T’s Bell Labs on 3 April 1973. Happy birthday mobile phone! Now it is estimated by the International Telecommunications Union that there are six billion mobile phone subscriptions in the world, →
In the modern world sensors are used for recording everything from exhaust gas temperatures to the electrical activity in a human heart. Direct wiring methods are commonly used for simple on-off device control, where a circuit is either open or closed. Likewise, digital sensors are usually wired directly to monitoring panels in the world of →
A fight between a spam-fighting group called Spamhaus and a Dutch Web host Cyberbunker has been called the biggest public DDoS battle in history in the news. Spam-fighting organization Spamhaus (helps to block spam from entering e-mail in-boxes) has been in a battle over the last week that has seen distributed denial of service (DDoS). →
Google Offers Sneak Peek at Your Available Spectrum article tells that Google.org is publicizing a Spectrum Database that monitors unused spectrum frequencies (a.k.a. white space) across the US. The aim is to allow industry stakeholders and the public to utilize unoccupied frequency ranges better through dynamic spectrum sharing. The database is undergoing a public trial →
Inductive amplifier is a type of test instrument that does not require electrical contact to detect an AC wire under voltage. The conventional use of the inductive amplifier is finding the location of hidden wires and breaks in them. Inductive amplifiers can also be used to find an individual cable pair in a telephone cross →