More Lego Mindstorms NXT

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A movie of a robot having some fun fetching and throwing a ball.

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Connecting Chess for Android to a Remote Server

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I have received several questions on how to connect Chess for Android running on an Android device (e.g. a phone) as client to a remote chess server (e.g. a powerful desktop), so I decided to write a small document with detailed instructions. What you will need: The server software from Bernhard Wallner's chess utilities , suited for your server's operating system (if, say, your desktop runs Windows, you will need to download the Windows version). You do not need to download the client software in this case. The network enabled version of Chess for Android . On the server, start the engine server software, and construct a new row for every engine you want to run remotely. Assign a name, port number, and select the full path to each engine binary (an executable that runs on the server). You can also supply command line options for starting the engine. Check the active checkboxes and click start when done. This yields something similar to the screenshots below. Here, I have s...
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The DGT company kindly shipped me a beautiful DGT Pegasus electronic chessboard, which is a nice compact board with a Bluetooth connection. After a few fun hours hacking, I have implemented the proper connection with Chess for Android and will release this support soon on Google Play . A few features include: When connected, pressing the Bluetooth icon displays the board's trademark information The brightness slider in the board connection dialog can be used to dim the LEDs The optiona. move coach cycles through all possible destination squares The "Steady LED" checkbox will slow down the transitions between LEDs
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Chess for Android: UCI Engine Options

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The UCI engine setup dialog in Chess for Android was developed a long time ago when there were not many chess engines available for Android. As a result, I opted for a simple dialog that featured a few, commonly used UCI engine options only (such as hash table size, number of threads, endgame tablebases). However, the options that I picked almost ten years ago no longer serve the wide variety in options of the many chess engines available for Android. Therefore, I decided to re-implement the UCI engine setup and do what the UCI protocol specification actually intended: the GUI should parse all options and build a dialog that allows the user to change them. For engines with only a few options, this yields a concise dialog, as illustrated below with BikJump v1.8. For engines with many options, this yields a more elaborate, scrollable dialog, as illustrated below for Leela Chess Zero. In any case, however, the new implementation gives the user full access to all options! Expect...
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