Owen Geiger on Instructables writes: This earthbag dome Instructable simplifies the process and illustrates each step of construction with photos. The two critical drawings are also included here. Please refer to the complete article before asking questions. This multi-purpose dome can serve as a storage shed or cool pantry above ground, or as a rootcellar [...]
That was written in 2009. Rog has an impressive collection of Karsten steam engines, most of which seem to be based on the aeolipile. Gintschel-Modelbau now has a German-language website, but Rog’s page shows many older models not included there.
engineerzero was kind enough to give a guided tour of a ginormous Arduino Uno to a handful of faceless Google SketchUp denizens recently. Highlights of the tour included a short stroll down Power Street to Analog Alley, where many different kinds of sensors can be connected. The group also had the incredible opportunity to see a red LED being airdropped from a helicopter into digital pin 13. There’s no doubt that it was an extremely dedicated group of Arduino fans making pilgrimage to this site since these daring visitors risked life and limb climbing to the top of the crystal oscillator to get a view of the various components below.
Tours depart every 15 minutes from just north of the USB port. [via Adafruit]
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