About technologies for your digital home

For beginners and tinkerers

Performing your home electricity consumption audit

August 12th, 2018
Using Sonoff Pow R2 to Perform your home electricity consumption audit Sonoff Pow R2

  Everyone from us gets the electricity bills. But were you not curious to learn the usage pattern and which electric devices contribute the most to your bill? I mean not by the vendors declarations but based on the measurements. I was curious and I decided to perform my home electricity consumption audit. There could […]

Re-doing 6N11(ECC88) SRPP from eBay

July 18th, 2018
Tweak 6N11 ECC88-SRPP from eBay board top view

  Another project from eBay. It is an assembled 6N11(ECC88) SRPP board. Who are not familiar – a Chinese vacuum tube 6N11(via eBay) is an equivalent of Russian 6N1 (via Ebay). I read somewhere that Russians transferred their tubes technology in 1940s during the hot communism era and friendship time with other  pro-communism countries. Whatever […]

My R-core transformer arrived!

February 8th, 2018
R-Core transformers ... are they worth?

After waiting for a month+ , my R-core transformer finally arrived  🙂 It was well packed to survive a long trip from China. The declared parameters of the R26-09 R-core transformer’s (via eBay) were supposed to be: Primary: 0-115VAC x2; Secondary: 0-220VAC x2 with max total output current of 50mA and and 6.3VAC x2 with the total […]

USB flash drive no medium found

December 17th, 2016
Transcend Usb flash drive no medium found Format failed (0x1901)

I have ended with such error “Usb flash drive no medium found” too after writing different bootable Linux versions multiple times to my Transcend JetFlash 300 16GB USB flash drive. First, I got this error message in Windows OS. Initially, I thought that the issue was only only on Windows OS. So, I just booted to […]

Loudspeaker repair

October 18th, 2016
upgrade loudspeakers repair mordaunt short ms35ti crossover

At the moment, I have two audio systems at home. About one of them, I have written in my previous post on building a vintage stereo system. The loudspeakers, which are used in that system, are two-way Mordaunt Short MS35Ti speakers. They sound really nice and produce very accurate sound. I was quite lucky when I bought them […]

Healing Sony Xperia from Trojans

April 24th, 2016
Healing Sony Xperia from Viruses

It’s quite interesting. I would never think that non-rooted Android could become a victim of rooted adware, viruses or Trojans. Well, but the things changed a bit. Some vulnerabilities which might be used for a rooting tool can be used also for another purpose – to infect with viruses and adware. One of my family members managed to […]

DIY re-celling laptop battery

March 7th, 2016
Re-celling laptop battery Panasonic Li-ion cells

I have a Sony VAIO VGN-SR59 laptop, which batteries capacity significantly dropped from ageing 🙁 This laptop is already something like six years old. From the economical point, it is not worth to buy a new genuine Sony battery anymore because they are quite expensive. However the laptop runs still reasonable well for its age. But […]