Yesterday I got my hand on friend’s Jolla Sailfish OS smartphone. Jolla smartphone is the first handset that runs Jolla’s Sailfish OS, which is essentially a reworked version of Nokia’s now defunct Meego OS. The Sailfish OS is compatible with Android apps. The general quick fell on the phone is that it is pretty good →
How low can Ethernet switches prices go? In small unmanaged 8 port 10/100M 5 or 8 port switches typical price is around 15-25 Euros (around 2-3 Euros per port). But there are even cheaper Ethernet switches. Netwjork Tenda S108 SOHO kytkin/switch jossa 8 porttia is a very cheap 8 port 10/100M switch that costs only →
My old “smartphone” got to the end of the life beyond worth to fix. So I changed to a proper Android smart phone. Samsung Galaxy S4 Mini is Galaxy S4′s little brother is not only smaller but also much lighter than Samsung’s flagship phone. My initial feeling after few days of use is very positive. →
One key was damaged on my ACER 5552G laptop keyboard. The S key was literally falling apart every now and them (was damaged by too kid trying to pull the key out). Sending the laptop to repair center felt something that could cost quite a bit of money (usually this kind of problems are repairs →
Software-defined radio (SDR) has been a hot topic for many years. Software-defined radio (SDR) is a radio communication system where components that have been typically implemented in hardware (e.g. mixers, filters, amplifiers, modulators/demodulators, detectors, etc.) are instead implemented by means of software on a personal computer or embedded system. There has been many even free →
This week started with news titled D-Link Router backdoor vulnerability discovered and Back door found in D-Link routers. This rather worrying security vulnerability on several D-Link branded modem routers made me to check my system because I use D-Link firewall. But let’s start from the basics. Because D-Link device was on news, where is a →
The secret to sending analogue video signals over UTP is to balance them well. Video balun is a device made for this. I earlier write about Video over UTP and my own experiments related to it. Here is a look wat what is inside a commercially made inexpensive video balun, in this case LLT-201 from →
How could I measure the normal power consumption of my USB gadgets? How can I measure how much current a smart phone charging takes from USB port? A special built USB measurement adapter for multimeter or USB current/voltage meter can answer to to those questions (and sometimes you get some information from device manager USB →
Modern smartphones consume so much energy that charging them once a day is not always enough. When they are used intensively, the user sometimes has to look for a power source in the middle of the day, and charge their device whenever and wherever possible. At first glance, it seems absurd to worry about safety →
Powering all kind of gadgets from USB power has become very popular nowadays. Soldering from USB power? Now there are products for this. The question is that how useful they are because of the limited power available from USB port (just few watts). The maximum power you can get from normal USB 2.0 port is →