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The Stirling engine seems like an odd-ball design when you've only encountered gas and Diesel engines. Even though the Stirling engine is piston based it doesn't use valves. It has a sealed working fluid and no exhaust gas. Stirling engines aren't very common, but are being produced commercially as cryocoolers and for use in solar farms. Here are some thorough plans for constructing a model … [Read more...]
Now that the CCC is over, we finally dug ourselves out of a ginormous pile of cables (Kabelsalat ist gesund!) to bring you this round up post about the best stuff from the last two days of the con. First up on day 10 was I See Airplanes!, Eric Blossom's excellent speech on creating hardware for making homebrew radars and software using the GnuRadio project. He uses bistatic passive receivers in … [Read more...]
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