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Activities/Turtle Art/Using Turtle Art Sensors (view source)
Revision as of 00:06, 4 December 2010
, 00:06, 4 December 2010→The XO as an audio amplifier
For example, amplify the output of a crystal radio [[http://wiki.waggy.org/dokuwiki/electronics/crystalradio]]
For example, amplify the output of a crystal radio [[http://wiki.waggy.org/dokuwiki/electronics/crystalradio]]
[[File:XO crystalradio.jpg]]
This worked better on the XO1.5, presumably because of its higher processing speed. The headphones are omitted. A 0.1uF capacitor is connected between the radio output and the XO input to isolate the detector diode from the XO's DC bias. Theory predicts that a resistor to ground would be necessary at the radio output but practice indicates otherwise.
==Links==
==Links==