DGT+Board

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a sensory board developed and market by Digital Game Technology. The board in conjunction with a [|digital chess clock] is connected to a host computer and its chess gui or control program via [|USB], [|serial interface], or [|Bluetooth], and acts as a [|real-time] move input device during game play, to monitor or [|broadcast] the game, or to give chess engines a whiff of dedicated chess computers.  =Piece Recognition=
 * DGT Board**,

Sensor Technology
The patent-registered DGT sensor technology recognizes pieces containing piece-type and piece-color specific passive [|LC circuits] with a [|resonance frequency] of 90 to 350 KHz, the [|coil] on [|ferrite core]. Squares and their respective pieces (if any) are scanned by 2 x 8 [|silver-ink] printed trace loops on a [|polyester] film placed under the board, file and rank sequentially selected by [|analogue switch] [|multiplexers], [|feeding back] the output signal of an [|amplifier] via the selected [|inductive coupled] LC circuit to its input, forcing [|oscillation] in piece specific [|resonance]. Measuring the signal frequency or its [|period] via a digital [|input port] by the controller [|firmware] to convert it into appropriate piece codes takes about 3 ms per square.

Inside the Board

 * [[image:dgt05.jpg width="560" link="http://en.chessbase.com/post/dgt-presents-new-clocks-technology-and-vladimir-kramnik"]] ||
 * Inside the DGT Board ||

Scanning the Board
code format="cpp" void scanBoard(char *board) { for (int rank = 0; rank < 8; rank++) { switchRankMultiplexer( rank ); for (int file = 0; file < 8; file++) { connectFileMultiplexer( file ); int f = measureFrequency; /* e.g. in a 0 .. 35 range ~ 3 ms */ *board++ = pieceTable[f]; /* includes empty (0) */ }  } } code

=Applications=

Chess GUIs
The DGT Board can be used with most GUI's, such as Fritz GUI by ChessBase, Chess Assistant and Aquarium by ChessOK, Shredder GUI, Arena, PocketGrandmaster, WinBoard and XBoard. The open source **dgtdrv** library by Pierre Boulenguez under GPL Version 2 or later, can be used to adapt almost every GUI to interact with the DGT board.

Gavon
Josu Bergara Ede's dedicated User Interface for various open source chess engines, dubbed Gavon, based on the Raspberry Pi is able to interface with the DGT USB or Bluetooth Board.
 * media type="youtube" key="QR0b9AU1H3c" ||
 * Gavon Bluetooth DGT Board Connection, [|YouTube] Video||

PicoChess
Jean-François Romang's PicoChess is a dedicated chess computer based on Stockfish on Raspberry Pi and the DGT Board. The display of the digital chess clock acts as output device of a command line interface.
 * media type="youtube" key="gP_LpxUORVg" ||
 * PicoChess on a DGT eboard by [|Jonas Žnidaršič], [|BCE], [|YouTube] Video ||

Revelation II
DGT technology is involved in the Revelation II dedicated chess computer, developed by Ruud Martin's company Phoenix Chess Systems in cooperation with DGT.
 * media type="custom" key="24643000" ||
 * Revelation II Test by [|Jonas Žnidaršič], [|BCE], [|YouTube] Video ||

DGT LiveChess Software
DGT LiveChess Software allows [|live broadcast] of chess games via the [|internet], as used for instance in recent ICGA and CSVN computer chess tournaments served by DGT employee, CSVN chairman and tournament director Jan Krabbenbos. Participants are advised to don't use the board for analyzing purposes, as it was quite usual in over the board computer chess with ordinary chessboards.

Bart Weststrate and Johan de Koning, Marcel van Kervinck and Stefan Meyer-Kahlen ||
 * [[image:DSC_0016.jpg width="560" link="http://www.computerschaak.nl/nieuws-mainmenu-28/51-toernooien/616-photo-s-pt45-gt27-day-1"]] ||
 * DGT Board in action for live broadcast at PT 45, round 4, Kallisto - The King

DGT Pi
DGT Pi is a dedicated chess computer expansion hardware for the DGT Board integrated into a DGT3000 digital chess clock, released in October 2016. DGT Pi consists of a Raspberry Pi 3 with built-in [|Bluetooth] and [|Wi-Fi] functionality, and multiple chess engines included.

=See also=
 * DGT Pi
 * Square Off
 * TASC SmartBoard

=Forum Posts=

1998 ...

 * [|To Bob H.: A Puzzlement about the DGT Board?] by Steven Schwartz, CCC, October 28, 1998
 * [|DGT sensory board update] by Robert Hyatt, CCC, November 25, 1998
 * [|DGT vs Novag Universal] by Michael Ginat, CCC, January 19, 1999 » Novag Universal Electronic Chess Board

2000 ...

 * [|Does someone (Amir?) know the software used in Dortmund with DGT board?] by Sylvain Renard, CCC, July 12, 2000
 * [|A question to other users - DGT board] by Peter Berger, CCC, April 11, 2001
 * [|Your thoughts on the DGT electronic chessboard] by Gerald Grimsley, CCC, December 10, 2001
 * [|How electronic chessboards works] by [|Ben Bulsink DGT Project], rec.games.chess.misc, February 19, 2004
 * [|Crafty, Winboard, DGT and Move Annoucement] by Mike Byrne, CCC, April 24, 2004

2005 ...

 * [|CEBoard now supports DGT Board] by Alain Zanchetta, CCC, November 27, 2005 » CEBoard
 * [|DGT Board with Robot Arm] by Alfredo Delacruz, CCC, January 21, 2006
 * [|On the DGT piece recognition chessboard] by Steven Edwards, CCC, December 07, 2008

2010 ...
> [|Re: Where is the USB port entry usder OS/X?] by Shivkumar Shivaji, Hiarcs Forum, December 15, 2013
 * [|DGT Winboard interface] by Jan Krabbenbos, Winboard Forum, June 19, 2012
 * [|DGT e-Board] by Steven Edwards, CCC, June 09, 2013
 * [|DGT and Android (or iPhone)] by Albert Silver, CCC, October 10, 2013
 * [|Thoughts on the DGT chessboard] by Steven Edwards, Hiarcs Forum, October 10, 2013
 * [|DGT board arrives -- serious disappointment] by Steven Edwards, Hiarcs Forum, November 16, 2013
 * [|DGT board and piece set arrive -- all issues resolved] by Steven Edwards, Hiarcs Forum, November 29, 2013
 * [|How to make a DGT Board ?] by Sean Evans, CCC, December 05, 2013
 * [|That other DGT e-board] by Steven Edwards, Hiarcs Forum, December 07, 2013
 * [|DGT board C++ interface project] by Steven Edwards, Hiarcs Forum, December 07, 2013

2015 ...

 * [|DGT will do dedicated units this year] by Fernando, Hiarcs Forum, January 01, 2016
 * [|DGT e-board / Mac,PC,Pico / full coverage / worthy & use] by SFK3, Hiarcs Forum, May 30, 2016
 * [|DGT sensory boards, any experience?] by Gerald Grimsley, CCC, June 03, 2017
 * [|DGT Smart Board] by Schachspieler, Hiarcs Forum, October 26, 2017
 * [|Questions about the DGT Chessboard] by Tracy S Miller, CCC, December 13, 2017

=External Links=
 * [|DGT - Chess e-Boards]
 * [|DGT presents: new clocks, technology – and Vladimir Kramnik], ChessBase News, January 10, 2008
 * [|Patent US6168158 - Device for detecting playing pieces on a board - Google Patents]
 * [|The DGT Chessboard] from Arena Chess GUI
 * [|DGT-board] from PocketGrandmaster
 * [|dgtdrv: An input engine for the DGT Digital Chess Board]
 * [|Mychess - Fidelity Electronics: DGT Projets] (Spanish)

=References= =What links here?= include component="backlinks" page="DGT Board" limit="80"
 * Up one level**