Background
My first drivers were Winboard and UCI engines for my board, a Novag UCB. I used these in Arena, CB-Emu (which can use Arena) and Chessmaster and they worked well, but I soon found the problems with controlling a board using an engine. For example, GUIs don't allow engines to take back moves, you can't play "rated" games in engine vs. engine matches and so on. The open source program LucasChess and Arena supported DGT boards by using the file DGTEBDLL.dll in DGT's Rabbit Plugin so I realised that if I could convert my engines into this file I would be able to control my UCB board directly. DGT kindly gave me permission to duplicate the API for their library in my own program. In April 2017 I completed a working driver and used it in Arena and LucasChess for a few years.
Then in early 2020 I saw that Lars Nowak had written UCI engines for Certabo and Millennium boards. I thought it shouldn't be too hard to convert these to DLL files too so contacted Lars, who sent me the technical information for the boards. The communication protocols turned out to be more complicated than the Novag, but also the boards had no built in chess knowledge so I had to add move validation and take back procedures that weren't required for the UCB. He helped me test my Millennium version as I didn't have a board, but was unable to test the Certabo one. So I contacted Pietro at Certabo who was extremely helpful in getting my driver to work.
While working on these programs I had another look at other GUIs and found I could also add support for Shredder (Classic 5 and Shredder/Deep 13).
The next development came in May 2021 when Lucas released a Linux version of LucasChess. I had never used Linux before so converting my drivers was quite a learning exercise. But that meant LucasChess could support the Novag, Certabo and Millennium boards on Linux but not DGT boards as the Rabbit Plugin has never been released for Linux. So I then wrote my own version of Rabbit so that DGT boards would work on both Windows and Linux in these GUIs.
In March 2022 I finally solved a problem I had been having with Arena, which was stopping my drivers from being activated more than once per Arena session. The drivers can now be activated and deactivated as much as required.
Fritz and ChessBase
It took me a long time to get my drivers to work in Fritz and I finally succeeded in June 2022. They need to be 64 bit and that is why they are different files to the other drivers which are all 32 bit. This means they will only run in Fritz versions 15 and above and ChessBase 13 and above (although I think 12 also had an option for 64 bit).
UCI and Winboard engines
I had a few requests to make my drivers work in the old Chessmaster program and in November 2022 I released versions of my programs that run as chess engines. The engine is compatible with both UCI and Winboard so can be used in many other GUIs, not just Chessmaster. Of course, controlling an eBoard using a chess engine is less than ideal as you need to use it in an engine vs engine match, but for GUIs that would otherwise have no support it's better than nothing!
In December 2022 I compiled these engines for use in Linux, and in January 2023 SCIDvsPC was amended to handle my UCI engines, but in a way that also allows take back moves to be made.
Downloads
There is a Setup program for each driver that will allow you to install it for Arena, CB-Emu, ChessBase, Fritz and Shredder. You can also install the UCI/Winboard engine. There used to be separate downloads for the DLLmanager and DLLfritz programs that manage the drivers but those are now included in the setup programs.
There is no install for LucasChess since Lucas includes the drivers in his program downloads already. The Linux UCI engines are in a separate download at the bottom of this page.
Anti-virus programs
Some anti-virus programs (e.g. Norton) don't like my drivers. Because DGT install their drivers into the Windows\System32 folder I need to as well. I also include both 32bit and 64bit versions in one installation file. At the end of the installation I run a program (DLLfritz) which renames files in the Windows folder. My driver is marked as "Publisher: Unknown" since I'm not about to spend $400 per year on a certificate. All of this combined does make my setup programs look suspicious! If you are worried you should check my file out on an online scanner such as VirusTotal before telling your anti-virus program to exclude it.
BluetoothLE in Windows
The boards that use BluetoothLE (BLE) to connect require Windows 10 (from the 2017 version or later) or Windows 11 and also a Visual C++ Redistributable (x86 version for Arena, LucasChess and Shredder and the x64 version for Fritz and ChessBase). The Setup program will install these automatically or you can download them from Microsoft's website (under "All Downloads" > "Other Tools, Frameworks, and Redistributables"):
https://visualstudio.microsoft.com/downloads/
You will then have a file called VC_redist.xNN.exe which you should run to install the library. You can install both the x86 and x64 versions if you need them.
To use my driver you must first install the official Certabo software as that includes the main driver software for the board.
The Certabo board can communicate using either a USB cable, which will create a serial COM port
for communications, or the Certabo Bluetooth or BluetoothLE modules. The Bluetooth option doesn't work by providing a
virtual serial port like the other boards, so for this driver I had to write my own code using Windows
and Linux commands to access the BT port directly. This might not work on old versions of Windows or
in all versions of Linux. For BluetoothLE on Windows see the requirements described above. The Certabo BluetoothLE
module doesn't currently work on Linux.
The Certabo board also allows you to adapt your own pieces. Here is a
description of how I created my set.
Current version: 5.0 Released: 25 July 2025
User manual: ReadMe (Certabo).pdf
This driver will allow the Chessnut Air, Air+, Go and Pro boards to be used with GUIs in Windows and Linux. It will first try to connect using the USB cable and if that fails then it will try BluetoothLE. For BluetoothLE on Windows see the requirements described above.
Current version: 3.0.1 Released: 5 September 2025
User manual: ReadMe (Chessnut).pdf
Chessnut Evo
The Evo board connects differently to the other Chessnut boards so needs its own driver. It doesn't use BluetoothLE though, so you don't need to worry about BLE support on your PC. Instead, it uses your local network and accesses the board using the IP address of the Evo, which means that your PC and Evo must be on the same LAN. You also need to use the Chessnut Socket connection app on your Evo.
Current version: 1.4 Released: 18 December 2024
User manual: ReadMe (Chessnut Evo).pdf
Chessnut Move
The Move board needs its own driver to handle the automatic movement of the pieces. It will only connect to your PC using BluetoothLE.
Current version: 1.1 Released: 26 September 2025
User manual: ReadMe (Chessnut Move).pdf
(I'm not allowed to use their logo! DGT know about my program and provided technical information while I was writing it but, in case there is any doubt, this software was not written by DGT. It is not supported by DGT so if there are any problems contact me not them!)
Although I originally wrote this to allow the DGT USB and Bluetooth boards to be used in LucasChess for Linux, the Windows version can also be used as a replacement for the DGT Rabbit Plugin.
I use the driver with a SmartBoard and DGT3000 clock but it is programmed to work with the other DGT boards, including the Revelation, and the DGT XL clock. I haven't been able to test those though.
Current version: 3.3.2 Released: 26 September 2025
User manual: ReadMe (DGT).pdf
DGT Pegasus
The Pegasus board connects differently to the other DGT boards so needs its own driver. Since it connects using BluetoothLE you will need to check the requirements described above.
Current version: 5.1 Released: 5 September 2025
User manual: ReadMe (Pegasus).pdf
This driver will allow the HOS Sensory Board to be used with GUIs in Windows and Linux. The original board (with no LEDs) can only connect using USB with my driver. The newer board that does have LEDs can also connect using BluetoothLE, so for BluetoothLE in Windows please see the requirements described above.
Current version: 2.0 Released: 25 July 2025
User manual: ReadMe (HOS).pdf
This driver will allow the iChessOne board to be used with GUIs in Windows and Linux. It can connect using either a USB cable or BluetoothLE, so for BluetoothLE in Windows please see the requirements described above.
Current version: 2.0 Released: 25 July 2025
User manual: ReadMe (iChessOne).pdf
This driver, like any program trying to link a Millennium board to a computer, requires you to use the Millennium Chess Link box. Note that the eOne board also requires a special driver to be loaded for its USB support. It can be downloaded from the "USB drivers" tab on this page: eOne USB driver
The driver can connect to the board using a USB cable or Bluetooth (which both create a virtual serial COM port) or, in Windows, using BluetoothLE. For BluetoothLE see the requirements described above.
Current version: 6.0 Released: 25 July 2025
User manual: ReadMe (Millennium).pdf
I wrote some documentation of the UCB communications and used this to write the engines and drivers for the UCB board. I added the Citrine driver later as its communications are similar to the UCB.
Neither the UCB nor Citrine has piece recognition which really limits what my driver can do. So although I sometimes release updates to these drivers the changes are normally just internal code amendments to keep the source code for all of my drivers in synch.
Novag Citrine
Current version: 4.0 Released: 18 December 2024
User manual: ReadMe (Citrine).pdf
Novag UCB
Current version: 5.0 Released: 18 December 2024
User manual: ReadMe (UCB).pdf
I was asked about writing a driver for the Saitek boards that use OSA (the Leonardo, Galileo and Renaissance boards) and found Achim Pietig had written a program called OSA for Arena. I contacted him and he was very helpful in providing documentation and help. Both Achim and Lars Nowak spent a lot of time testing my driver - since I don't have a Saitek board this wouldn't have been possible without them. You will need an OSA Cable to use your board with the computer, although I believe it is possible to make your own - see the ReadMe file below for details.
Current version: 1.6 Released: 18 December 2024
User manual: ReadMe (Saitek).pdf
I had no plans to write a driver for the Square Off Pro as Square Off didn't release their API and didn't reply to my emails for technical information. But then I saw that Gerhard Kalab had worked out how to talk to the board so I used his information to write this driver. Since it connects using BluetoothLE you will need to check the requirements described above.
In early 2023 Square Off released a firmware update for the Pro board that significantly changed how the board talks to other devices. My updated driver should now handle this but it will use more battery power than before, and the Pro's battery isn't good to start with. I recommend using the Pro board with it plugged into a wall power supply.
Note that there are some differences in how this driver works compared to my other drivers and also compared to the official Square Off app. Please read the manual!
Current version: 4.1 Released: 5 September 2025
User manual: ReadMe (SOP).pdf
This is a driver for the Tabutronic Sentio board. Note that it is not for the Cerno board: that board uses the Certabo driver above. The driver works with the Certabo Bluetooth and BluetoothLE modules but you might need to update the software in it using the BT Sentio Cerno image. The Certabo BluetoothLE module doesn't currently work on Linux.
Current version: 4.1 Released: 5 September 2025
User manual: ReadMe (Tabutronic).pdf
Linux UCI engines
I compiled the UCI/Winboard engines for the boards for use in Linux. There are some additional requirements
for this such as libraries that need to be loaded, udev rules that need to be set and so on so please read the
README.MD file included in the download. Please note that these engines run on X, not Wayland.
The download contains the latest version of the drivers, so the "version" number below relates to the file containing the whole set of engines.
Current version: 25 Released: 5 September 2025
List COM & Bluetooth Ports
This program allows you to identify the COM ports on your PC that are used by the drivers above. The Certabo can connect using Bluetooth so there is also an option to list the discovered Bluetooth devices. A button is provided to copy the list into the Windows clipboard so that it can be pasted into an eMail, for example, and also a button to start Windows Device Manager so you can compare the ports my program thinks exist to those Windows has.
For Bluetooth you can set the time to search for devices (between 1 and 30 seconds). For each device it finds it will also search for an extra few seconds to determine what ports it uses, so the total search time will depend on how many devices you have. For BluetoothLE see the requirements described above.
If your board is working with no problems you do not need this program, but if you are having trouble connecting your board it might help identify the problem.
Current version: 6.0 Released: 25 July 2025
