Some more info and experiments on driving Nixie tubes. Open circuit cathode voltage, open collector vs totem pole / push-pull drivers, NIxie voltage drop and pre-biasing, and using the ULN2003 with zener clamping. Forum HERE Podcast: Download

The Dulmont Magnum “Kookaburra” from 1983 is the only laptop to have even been designed and made in Australia, as well as being the world’s first “clamshell” laptop design. Dave tears down this obscure retro classic based on the equally rare 80186. Download ROM images HERE Forum HERE Hires photos: …

Part 1 of an internet connected Nixie tube counter/clock display project. What are Nixie Tubes? How do they work? How do you drive them? Selecting a suitable driving solution and parametric searching. Forum HERE Podcast: Download

Dave takes a look at the 21,000fps Chonos Kickstarter high speed digital camera prototype. Tesla500 Youtube Channel World’s most powerful LED light – 5kW VIDEO Forum HERE Podcast: Download

Part 2 of building the Raspberry Pi computer cluster. Dave strips down an old Apple G5 PowerMac to use as the enclosure. Forum HERE Podcast: Download