Pretty much an open question (as Olin might say....)

Specific coins....or any coins?  Any coins is easy....Ir...breaks the beam
if a coin passes by.

Specific coins....almost needs a mechanical filter or an array of sensors
(how big...compare..etc)

Seems to me someone had taken one apart not long ago and was reverse
engineering it?  At least I think this has been discussed before, sometime
in the last 6 or 7 years at least.


>From: Gabriel Caffese <gcaffese@HOTPOP.COM>
>Reply-To: pic microcontroller discussion list <PICLIST@MITVMA.MIT.EDU>
>To: PICLIST@MITVMA.MIT.EDU
>Subject: [EE]: Coin detector circuit
>Date: Wed, 18 Feb 2004 23:01:22 -0300
>
>Hello everyone,
>
>     As my analog electronics is not very good, am looking for a simple
>circuit for detecting coins.
>     Does anyone have a simple one ???
>
>
>     Thanks in advance,
>
>            Gabriel Caffese.-
>
>--
>http://www.piclist.com hint: The PICList is archived three different
>ways.  See http://www.piclist.com/#archives for details.

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