My dear readers, today I will fascinate your eyes and minds with this beautiful work of art.

Made in a hurry. I will draw the schematics later by hand like usual.

The sound system is based on subminiature Soviet Union vacuum tubes and it consists of 5 components:

- audio preamplifier - 1 x 6N28B-EV indirect cathode heating triode (left side) and 2 x 6J45B-EV indirect cathode heating pentodes (right side)

- Audio sound processor (equalizer) - entirely made with 6J45B-EB pentodes:

- Switching power supply for the preamp and equalizer (SG3525-based) which converts 12 volts up to +/-24V and +6.3V for heaters. Initial tests performed with a computer ATX power supply;

- 1 x Creative SB16 hybrid sound card - the DACs are made entirely with 6N28B-EB subminiature triodes. Maybe I will also insert a small PC motherboard with a PCI slot, not sure yet if it will fit or if it will perform OK due to the influence of the PSUs. There is also another DAC in the back side, not shown in the picture. 1 Watt of pure pleasure for the ears:

- 6W final stage amplifiers made with direct heating cathodes at 1 volt: 1J29B-EV and 1P24B-EV (missing from board);

- Switching power supply (SG3525-based) which takes the voltage from 12V and outputs 90V (EZ-80 rectifier) and 1.2V for heating the filament

The dust on the board is caused by some big big CNC machine I used to quickly make the boards.

(almost?) Everything will fit in here:

I will have to clean that and maybe repaint it.

Useful to charge laptops, telephones, to power up small machines with power consumption less than 1kW.

That round grey thing is an autotransformer which takes 220V and outputs from 10V up to around 250V.

Electronic ignition system is now work in progress. 555-based. No vacuum tubes here.
HM2007 hardware neural network board is completed. I found some old Computer Magazine from around 1994 at www.imagesco.com which shows a schematic, and also a Bachelor degree paper which explains its internal structure. With that in mind, I completed a project for my PhD back in 2011 which uses such a circuit to recognize the oil level in a 1-cilinder 4-stroke engine by signalizing the vibrations.

Automobile restoration is now work in progress. A lot of malfunctions were found, some of the parts I don't even know how to name in English. For example - the two rods that link the gear box to the wheels, some gears inside the gear box miss their teeth, engine cooling system is clogged.

Stay tuned. In the next log - pictures with the original dash board. Also I hope I will be able to get some pictures with the automobile restoration process.

After I get all the parts, I promise I will start to upload the schematics.

______________________________________

kernel panic: improbability coefficient below zero