Grid Leak Radio Draws The Waves

[Stephen McNamera] found a schematic for a grid leak radio online and decided to throw together a few tubes on a piece of wood and see how it worked. As you can see in the video below, it works wel…

Supercon 2022: Nick Poole Makes A Jolly Wrencher Tube

[Nick Poole] shared his circuitous journey into the obscure world of homemade vacuum tubes on the Supercon 2022 stage. It began innocently enough when he saw [Usagi Electric]’s single bit com…

A Guide To Milling PCBs At Home

If you keep up with various retro vacuum tube projects, you probably have run across [UsagiElectric] aka [David]’s various PCBs that he makes on his own Bridgeport EZ-Track 3-axis milling mac…

Mystery WWII Navy Gear With Magic Eye

There’s an unknown piece of military electronic gear being investigated over on [Usagi Electric]’s YouTube channel (see video below the break). The few markings and labels on the box ar…

DIY Wunderwaffe And Others Make Up This Open-Source Arsenal

Unless you stay up all night and have a dozen printers going, it’s probably way too late to make one of these beautiful prop weapons designed by [Andrew] of The Ray Gun Project in time for Ha…

Semiconductor Shortage? Never Mind That, There’s A Vacuum Shortage!

As those of us who work in electronics are grappling with a semiconductor shortage making common devices unobtainable and less common ones very expensive, it’s worth noting that there’s…