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Author Topic: Wireless short-distance identification of passive components  (Read 578 times)
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Israel
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I am looking for a way to wirelessly identify chess pieces on a chess board. RFID would match if it would give me a location of pieces...Dose  anybody has any idea?
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Manchester (England England)
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Have you seen this one:-
http://www.andreadrian.de/schach/#Selbstbau_Schachcomputer_SHAH

RFID would work but you need a reader under each square. Possible but either expensive or a lot of work.

Optical - Video Camera under the glass board looking at markings on under side of pieces.

Dead reckoning - you know where the pieces are to begin with, a hall sensor in each square and a magnet on each piece would detect a new square being occupied and one being vacated, so you know what went where.
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Israel
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Thank you for ideas. We can add to this calibrated weight sensors at each square  in case different pieces has different weight (and then we need to recognize color ..) 
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