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alex j lowry s electronics homepage language english 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 modular ping atari s original pong circuit from 1972 separated into five miniature 100x100mm pcbs to allow for modification and expandability leningrad m the leningrad 1 improved and simplified a further development of the leningrad 1 zx spectrum clone fixes all the major issues with my first replica while requiring less components nimf 4 rgb to pal composite video encoder designed in russia in the 1990 s this encoder converts ttl level rgb video to pal color composite video it s a useful peripheral for the leningrad m computer and plugs directly into it without requiring cables z80 tv game 2 an updated version of the original z80 tv game with an extra controller port and cheaper i o circuitry it s completely cross compatible with the original z80 tv game this games console is based on a circuit that was developed from scratch by a hobbyist in japan during the 1980 s over two dozen games have been written for it so far this pcb based version features plug in cartridges and compatibility with common sega controllers savia 84 a handheld z80 microprocessor trainer with 24kb of battery backed memory based on a circuit designed in czechoslovakia in 1984 it s an excellent starting point for learning z80 assembly mini berlin uhr one of berlin s many unconventional timepieces in a desktop form factor a simple affordable circuit based on discrete cmos logic leningrad 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 galaksija logic probe designed in 1983 for troubleshooting the galaksija homebuilt computer from yugoslavia a versatile ttl logic probe that indicates oscillation with 4 leds lm386 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 sega 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 miscellaneous assorted interesting things the museum section of this website links if you find this website interesting i recommend checking out these other sites last updated on apr 20 2026 this page was first uploaded on mar 2 2025 visitors since dec 26 2025 background image by tile anon