No Die? No Problem: RealDice.org Has You Covered

Have you ever been out and about and needed to make a check against INT, WIS or CON but not had a die handy? Sure, you could use an app on your phone, but who knows what pseudorandom nonsense that’s getting up to. [Lazy Hovercraft] has got the solution with his new site RealDice.org, which, well, rolls real dice.

Well, one die, anyway. The webpage presents a button to roll a single twenty-sided die, or “Dee-Twenty” as the cool kids are calling it these days. The rolling is provided by a unit purchased from Amazon that spins the die inside a plastic bubble, similar to this unit we covered back in 2020.  (Alas for fans of the venerable game Trouble, it does not pop.) The die spinner’s button has been replaced by a relay, which is triggered from the server whenever a user hits the “roll” button.

You currently have to look at the camera feed with your own eyes to learn what number was rolled, but [Lazy Hovercraft] assures us that titanic effort will be automated once he trains up the CVE database. To that end you are encouraged to help build the dataset by punching in what number is shown on the die.

This is a fun little hack to get some physical randomness, and would be great for the sort of chatroom tabletop gaming that’s so common these days. It may also become the new way we select the What’s That Sound? winners on the Hackaday Podcast.

Before sitting down for a game session, you might want to make sure you’re all using fair dice. No matter how fair the dice, its hard to beat quantum phenomena for random noise.

What’s Black, White, And Red On 20 Sides?

You won’t need to pack a full set of dice for your next game with this DIY Multifunctional Eink Gadget. [Sasa Karanović] brings us a fun device that combines a few essential aspects of tabletop gaming, D6, D12, and D20 dice rolling and a hero dashboard. While they have grand plans for a BLE networked future application, we admire the restraint to complete a V1 project before allowing scope-creep to run amok. Well played!

For this project, [Sasa] realized it needed to be battery powered and just choosing the right display for a battery powered application can be daunting. Even if you aren’t building this project, the video after the break includes a nice intro to electronic ink and low power microcontrollers for the uninitiated. We even see a graph of the completed board’s power draw from the button wake up, display refresh, and low power sleep. The project has some neat tips for building interaction into case design with the use of the display and a flexible bezel as integrated buttons. Continue reading “What’s Black, White, And Red On 20 Sides?”

CoreXY For A Dry Erase Plotter

After years of playing DnD, it’s finally [Mike]’s turn to be a DM. Of course he can’t draw maps with his hands, so that means building a tabletop plotter.

[Mike] is basing his tabletop game plotter on the Makelangelo, a polar plotter that draws images on a vertical platform with the help of two motors in the corner. This is a tabletop plotter, so the usual vertical arrangement wouldn’t work, but there are some projects out there that use the CoreXY system for a similar horizontal build.

The tabletop CoreXY system is built from rigid aluminum yard sticks, 3D printed parts, two very cheap stepper motors, an Arduino, and a whole lot of string. It’s a very inexpensive build and because [Mike] is using metal rulers for the frame, it’s also very low profile – a nice advantage for table top sessions.

So far, [Mike] has the axes of the plotter moving, with a servo and pen mechanism next on the build plan. He has a few neat ideas for how to plot these dungeon maps by vectoring bitmap images and sending them to the Arduino, something we’ll probably see in a an upcoming build log.

You can check out a video of [Mike]’s build below.

Continue reading “CoreXY For A Dry Erase Plotter”