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Activities/Turtle Art/Using Turtle Art Sensors (view source)
Revision as of 02:02, 4 December 2010
, 02:02, 4 December 2010→The XO as an audio amplifier
The diode is still required. The original cat's whisker diode was made with galena crystals. [[http://en.wikipedia.org/wiki/Cat%27s-whisker_detector]]
The diode is still required. The original cat's whisker diode was made with galena crystals. [[http://en.wikipedia.org/wiki/Cat%27s-whisker_detector]] Other materials are iron pyrite ("fool's gold", iron disulfide), silicon, molybdenite (MoS2), and silicon carbide (carborundum, SiC). It is also possible to use a rusty razor blade (iron oxide).
==Links==
==Links==