Due to present COVID-19 situation, only UPS/FEDEX postages work; Polish POST services are temporaly suspended (exceptions: Germany, Slovakia, Czech, Parcel to Switzerland).                                                                                                                                   

Due to present COVID-19 situation, only UPS/FEDEX postages work; Polish POST services are temporaly suspended (exceptions: Germany, Slovakia, Czech, Parcel to Switzerland).                                                                                                                                   


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            Dear Visitor, Welcome to my online shop. My name is Przemyslaw Krawczyk, but commonly I`m known to people of Polish Atari Scene  ( and maybe not only...but who knows?) as "lotharek". I`m very happy you got here.

           My mission is to deliver high quality devices in good prices. Devices, that follow modern environment standards (ROHS, Weee, Gios) and satisfy customer needs.  My devices are made at automatic assembly lines by PP ELECTRNONIX, parts are  supplied by MICROS in almost 90%, ABS casings are made by Maszczyk, metal ones by SESMIL. All my devices before postage are tested and checked personally by me, then securely packed. 

        In past I have used EBAY.CO.UK ( look at my feedback left by customers)  to sell my stuff. Why UK ?? Simple, I have spent there two years of my live, improving my language skills and acquiring some western approach to life ;-)

      Time has passed,  upgrades have been developed and improved... Since 2008 I cooperate with Jeff - creator of SD and USB Floppy emulators, also new cooperation with Candle`o`Sin have been recently introduced, that hopefully will bring to life some new ideas for retro gaming enthusasts like me and you

    If you have interesting idea/project, do not hesitate to contact me. I may be able to commercialize your project worldwide.


     Also, worth mentioning is fact, that part of my income goes to those, who need it most. Thanks to your purchase I can keep on helping kids from Special Needs School in Piekary Slaskie. In addition, I`m one of the supporters of KID`S DAY in my JUDO CLUB, where big party is organised and money collected for kids. Last, but not least, I support almost every retro party I visit and Judo Club CZARNI BYTON as this sport - next to retro gaming -  is my passion.





Once again – Thank You for Your purchase and Your support.

 Please, remember - supporting me, You support all my charity activity we both shall be proud of. 


Netusbee drivers v524.10.2019 18:48


New NetUSBee drivers has been just anounced - revision5:


  • Mouse wheel working for all mice.
  • Tilting wheel left/right and side buttons now work (if wheel have those features).
  • Mouse CPU usage reduced by up to 70% when idle.
  • Keyboard CPU usage reduced by 50%.
  • Storage transfer rate increased by up to 4%.
  • New graphics tablet driver.
  • Various improvements and bug fixes.
  • Updated documentation.


DOWNLOAD  https://lotharek.pl/files/netusbee/NETUSB05.ZIP

New products in offer12.09.2019 0:55

Holiday time was very busy for me, but I am happy to inform, i have introduced NEW PRODUCTS


Also, available in PREORDER:






INCOGNITO for ATARI 800 Preorder 08.08.2019 22:58

Incognito for ATARI 800 preorder is open.

We have decided with Candle`O`Sin to produce small batch. Deliveries in October, due to very busy schedule...

As always, more details HERE




Feature list:

  • 4 slots for OS separate for Colleen and XL/XE mode
  • 64k of FLASH for future GUI
  • 2 slots for BASIC/CARTRIDGE
  • build in, configurable PBI CF card storage (works as PBI in XL/XE mode, and through SDX driver in Colleen mode)
  • build in FAT32 loader (SIDE) with both ATR and XEX file handling
  • SpartaDosX
  • onboard RTC
  • 1MB Axlon compatible memory expansion for Colleen mode
  • 64k/320k/576/1088k total memory available in XL/XE mode
  • up to 52k of memory in Colleen mode (configurable)


Newsletter activation07.08.2019 12:57


Dear registered User,


Please, do not forget to activate  newsletter :-) from me

  • log into your account
  • under maintenace tab please sign up.
  • Activation mail will be sent to Your registered mail address.
  • Accpeptance of GDPR is necessary. 



Ami2PC Amiga USB transfer tool PREORDER28.07.2019 14:46


I`m very happy to inform, that after 4 months of developing,  Ami2pc  - hxc usb variation preorder is open 

  • the easieast way to transfer adf/dms to real floppies
  • play games directly from pc via USB port


Device in action: https://youtu.be/p4NuKPqSgr8


Inside BOX:

  • device inside transparent blue case professionally cnc`ed
  • amiga floppy adapter 
  • flat cable 14pin 20cm long






More about device, as usuall at my www HERE

Wireless mouse adapter available in preorder28.07.2019 14:43

USB wireless mouse adapter for AMIGA/ATARI STe, based on open source Smally Mouse (https://github.com/simoninns/SmallyMouse2)

is available in preorder. 

I have made few changes in initial design:

  • both ATARI ST/AMIGA  standarts supported- mode selected with slide switch
  • no jumpers - dip switch
  • size reduced to 22x18 mm
  • QFN chip used


More details HERE: 






New products at Lotharek`s Lair17.07.2019 15:02


I`m happy to announce new products available at my shop:

  • KEMPAY_CPLD  2x Joysticks/AY interface for ZX and compatible / more details HERE
  • ZX SRAM 32kB  -  base CPU sram 32KB replacement  / more details HERE /  
  • Z80SRAM - RAM / CPU module  - as above, bit with Z80 CPU  integrated / more details HERE
  • Video 16kB SRAM module / more details HERE



  • MICRO ULTRASATAN / more details HERE
  • DIVIDE 2k20 / more details HERE


ATARI LOST PARTY10.07.2019 7:59

Dear Visitor,

Till Sunday i`m away from Lair, visiting ATARI LOST PARTY. 

All mails will be answered after my return.


Micro Ultrasatan preorder starts today 19.06.2019 20:48

Micro Ultrasatan preorder starts today - all details at my www:


Deliveries end of AUGUST !!



6502 +4 is almost ready18.06.2019 19:37

Candle`O`Sin  has released video with last invention. 6502 +4  is CPU replacement of main CPU in Commodore C+4/c16/C116 machines with additionanl sram. You can watch video HERE:  https://youtu.be/1e0n6eZzYc4.

Soon, device will available at Lotharek`s Lair at item`s page https://lotharek.pl/productdetail.php?id=257