Planetarium makers do awesome work, even building “home-domes” for exhibition – The Home Planetarium Association welcomes all those who build small planetariums for home, school, museum, or other personal use. A quarterly newsletter is produced; This includes collecting toy planetaria, operating older or small professional units, or just fondly remembering childhood trips to planetariums around […]
The cassette tape company Memorex seared the image of Ella Fitzgerald shattering a glass with her voice into many people’s collective memory in a television commercial that ran in the 1980s. With the right tools, good pitch, and a strong voice (or an amplifier), you can do this at home. How to Break a Glass […]
In response to our item about the commercial TDS (total dissolved solids) water testing tool, somebody sent us a link to this homemade meter, which tests for TDS, EC (electrical conductivity), PPM (parts per million). EC/TDS/PPM Meter On Limited Budget – Link Related: Testing your own drinking water – Link
Don’t forget: This Tuesday (tomorrow, Feb 26, 7-9pm) is the next Dorkbot DC. Presenters include Katie Bechtold, a spacecraft flight software developer and controller, talking about the Mercury MESSENGER mission, Justin Sabe on making cheap MIDI controlled instruments from toys, and Alberto Gaitรยกn, presenting Part Two, The Software, of his talk on Remembrancer, the amazing […]
