DGT Piece Sensors

ChessSpawnVT
mgx9600 wrote:

Holes can be small by perforating a covering material (maybe with chessboard printed on it), so you have many tiny little holes instead of a big hole.  But the problem I ran into was shadow rejection, it made the e-board unstable in real play.

 

As for playing with weighted pieces, here's my DIY e-board:

https://www.youtube.com/watch?v=uJqjMlebuHc

It uses regular weighted chessmen and saves PGN to a USB thumb drive.  Another video at an earlier stage:  https://www.youtube.com/watch?v=0Y8NTp1wk2s (same e-board, but without USB feature and with more bugs).

 

Oh, I should add that the e-board allows illegal moves and undos (the software was initially designed for USCF scholastic tournament play, and sometimes check isn't addressed before a move is made, so moves may have to be undone. Also, sometimes, (especially) the knight is placed in illegal locations.  In USSCF tournament, illegal moves are allowed if gone unnoticed so the e-board can handle that.

 

I've been using my e-board more than the DGT e-board because of the USB thumbdrive support. The DGT e-board is a bit of a pain because the only way to get a game off of it is to download to a computer.

 

Can you provide more information about the sensor system used. Thanks. 

mgx9600

1. The sensors are clones of Omron's TL-W5MC1 under each square

2. The 64 digital signals are gathered by CD4021B, giving 3 lines into the Arduino

3. The USB interface is from an Arduino USB shield but desoldered and remounted.

4. Power supply in the demo is from Adruino 6-AA battery pack

5. Voltage boosted (to run the induction sensors) by a DC-DC step up module based on LM2577.

 

Ghost_Horse0

Cool info.

I've always had in the back of my mind it'd be fun to try and make a board like this. Maybe some day...

jjupiter6

 

Ghost_Horse0 wrote:

 

Ok, that's true.

I was just thinking that there's no reason not to be able to use any pieces you want... but yeah, the holes might not look nice.

 

You can - easily. Have a look at the Certabo board and sensors. They stick on to the bottom of any pieces you want to use. It works well - I have been using the system myself.

 

https://www.certabo.com/product/additional-34-certabo-tags-set/

 

 

ChessSpawnVT
jjupiter6 wrote:

 

Ghost_Horse0 wrote:

 

Ok, that's true.

I was just thinking that there's no reason not to be able to use any pieces you want... but yeah, the holes might not look nice.

 

You can - easily. Have a look at the Certabo board and sensors. They stick on to the bottom of any pieces you want to use. It works well - I have been using the system myself.

 

https://www.certabo.com/product/additional-34-certabo-tags-set/

 

 

$675 for the board with no pieces; not FIDE certified. Pass. I do think the Wenge board doesn't look all that bad with the sensor holes. 

jjupiter6

What difference does Fide certification make?

ChessSpawnVT
jjupiter6 wrote:

What difference does Fide certification make?

It means that in FIDE and US Chess events the dgt board can be used to electronically record and broadcast the moves live.  The certification process has to do with preventing cheating by electronic means. The real issue, other than the holes, is the expense for what one is buying compared to dgt board and set combinations.