Extracting time data from a DGT3000 clock (using Raspberry Pi)

[Nina M.]

Hi all,

I just joined this Google Group a few days ago, and I'm really new to RPI and PicoChess. Currently, I am working on a highschool project to convert the time from a DGT3000 clock into a physical braille interface for blind chess players. I would like to ask about how to extract time data from the DGT3000 clock using Raspberry Pi. 

What I've done so far:

• I have followed the instructions from Jürgen to connect DGT3000 to Raspberry Pi via I2C (I tried both RPi3 and RPi4). Then I wrote a Python code using the smbus command to try to extract the time data, but it does not seem to work. I keep getting “Time: 255” or I/O error as the output.

• I have also installed PicoChess to try and work from there, but I'm not sure if this is the proper approach as the only function from PicoChess that I would like to use is detecting time data from the DGT3000 clock (No need for the chessboard interface or engines). Besides, I don't really know where to start 😅

I would greatly appreciate any suggestions! 🙏

Thanks,

Nina

[Randy Reade]

Hi,

PicoChess uses the dgtpicom.so shared library to communicate with the DGT3000. Here is a link to the source:

https://github.com/lucasvdp/dgtpi

Randy

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[Nina M.]

Hi Randy,

Thank you so much for the pointers 🙏  The time extraction works great now!

Nina M.