Researchers at Binghamton University in the US have proposed a breakthrough approach to green wearable electronics. They have developed paper-based devices that use moisture from the environment to generate electricity. This eliminates the need for frequent charging or battery replacement.

A standard Ethernet cable (category 5e or 6) consists of 4 pairs of conductors (8 cores in total). Fast Ethernet (100 Mbps) transmission actually uses only two pairs, or four of the eight cores. Data is transmitted on cores 1, 2, 3, 6. The remaining two pairs are unused. In emergency situations, properly plugging the wires into the RJ-45 connectors will make it possible to connect two devices. Importantly, PoE power can also be provided on the same pins a...

Using an HDMI-DVB-T modulator is a very good way to introduce your own advertising channel into a TV system, especially in places where the DVB-T2 terrestrial TV system is used. You can use it to transmit your own signal (e.g., advertising signal) through regular antenna TV cables and receive it on standard TVs on the network. The HDMI-DVB-T modulator allows you to convert an HDMI signal (e.g. from a computer, media player) into a DVB-T digital signal, which can be transmitted through the build...

Hikvision IP cameras that have the designation -LI in the model name have a hybrid illuminator (Smart Hybrid Light), which combines the advantages of white light and infrared illumination. Traditional cameras have an IR illuminator, which illuminates the scene and allows recording images at night, at the expense of color loss. ColorVu cameras, can record color images around the clock, but the use of white light illumination is not always expected. To meet these requirements Hikvision offers sma...

DDM, or Digital Diagnostics Monitoring, is a set of functions that allows you to monitor the operation of fiber SFP modules in network switches. When a DDM-enabled insert is placed in a switch it gains access to the following insert performance parameters:

Wireless Internet access services provided by mobile network operators are an increasingly popular access method chosen by subscribers. The growing popularity is due to falling prices and higher transmission speeds for the services offered. An absolute hit here are the LTE and 5G technologies enabling to achieve bandwidths similar to those offered by local ISPs. Below is a list of the most common queries about antenna selection is presented:...