Language: USGB English | RU Русский

Welcome! On this website, you can find links to my electronics projects. If you want to make any of these yourself, you can have the PCBs manufactured by a fabricator such as JLCPCB, Elecrow or PCBWay. Most components can be purchased at Mouser or Digikey; both companies ship worldwide.

If you have any questions relating to a circuit or you'd like to suggest modifications/improvements, you can reach me at my email address:
    al5338 { letter "a" with a circle around it } seznam { full stop/period/point } cz
I check my inbox approximately once per week.

All my creations are open source; you are free to distribute, modify and sell them however you like.

Leningrad-1Leningrad-1: A Soviet-Designed ZX Spectrum Clone

A 48K Sinclair ZX Spectrum clone from 1988 that can still be built today using readily available components. Designed to be as simple as possible hardware-wise, requiring as few as 44 ICs (compared to around 60 ICs on most clones).
 

Logic probeGalaksija Logic Probe

Designed in 1983 for troubleshooting the "Galaksija" homebuilt computer from Yugoslavia. A versatile TTL logic probe that indicates oscillation with 4 LEDs.
 

Amplifier PCBsLM386-Based Audio Amplifiers (Mono and Stereo)

Small, simple audio amplifiers that can run at a supply voltage of 5-12VDC. Great for a variety of applications.
 

Composite video modSega Master System II Composite Video Mod

An SMS2 composite mod so seamless, it almost looks like it was installed by Sega themselves. No bodge wires or case drilling required!
 

Object of unknown purpose...Miscellaneous

Assorted interesting things - the "museum" section of this website.

Last updated on Apr 5, 2025.
This page was first uploaded on Mar 2, 2025.
Background image by tile-anon.