Bidirectional Data Transfer Through Mud?

We take easy communications for granted these days. It’s no bother to turn on a lightbulb remotely via a radio link or sense the water level in your petunias, but how does a drilling rig sense data from the drill head whilst deep underground, below the sea bed? The answer is with mud pulse telemetry, about which a group of researchers have produced a study, specifically about modelling the signal impairments and strategies for maintaining the data rate and improving the signal quality.

If you’re still confused, mud pulse telemetry (MPT) works by sending a modulated pressure wave vertically through the column of mud inside the drilling tube. It’s essential to obtain real-time data during drilling operations on the exact angle and direction the drill bit is pointing (so it can be corrected) and details of geological formations so decisions can be made promptly. The goal is to reduce drilling time and, therefore, costs and minimize environmental impact — although some would strongly argue about that last point.

Continue reading “Bidirectional Data Transfer Through Mud?”

Remembering The MUDdiest Of Times With The MUD1 And MUD2 Online RPGs

Before there were massively multiplayer online role-playing games (MMORPGs) like EverQuest, the genre was called a Multi-User Dungeon (MUD), following in the trend of calling text adventures at that time ‘dungeon crawlers’. These multi-player games required you to bring along your own imagination, for these were purely text-based affairs. Despite the first of these (MUD1) having been released all the way back in 1978 for the DEC PDP-10, these games are still being played today, long after they stopped being in the (game) news cycle.

The brief history and today’s status of MUD1 is covered in a recent article by [Bryan Lunduke], following its creation in 1979 in the UK by [Richard Bartle] and [Roy Trubshaw], its struggles and eventual renaming to ‘British Legends

Technically all you need to play is a telnet client, though you can always use a graphical web browser to log into a text adventure. Much like playing a game like Zork — which heavily inspired MUDs — you got to use your wits and map drawing skills to figure out how to navigate around the world. You can also play the new and improved MUD: MUD2. Make sure to take a peek on [Richard]’s aesthetically yellow MUD-related website and the latest gossip in the Muddled Times before joining either the UK MUD2 server or the Canadian one.

Although definitely leaning on one’s imagination more than the advanced graphics of a graphical MUD like EverQuest require, there’s a lot of fun to be had in these MUDs, as well as the plethora of others.

Thanks to [Stephen Walters] for the tip.

Mud Tub: A Tactile Computer Interface

mud

[Tom Gerhardt] has made this very interesting mud interface for a computer.  Follow the link to see a video of it in action. It appears as though he’s using a laser grid of some kind to establish elevation. We might be way off on that though, there aren’t any details on the construction. He does mention that it is an open source hardware and software project, so maybe the details are available on request. In the video you can see it running as a projection surface where people are interacting with items directly on the mud. You can also see it being used as an external input device. People play Tetris using it in that example.

UPDATE: [Moon] reports from the ITP show that the tub has a 16×12 grid of generic pressurs sensors on the bottom. These feed into a MacBook Pro which is projecting on the surface. Despite the sparse grid, [Tom] says he gets good resolution by interpolating between sensors; it can detect a resting hand pivoting on the surface.

Lively, Google’s Stab At Second Life


Google has just released their own avatar based social arena a la Second Life, which is called Lively. It will require a client download and install like the popular MUD, but after that it can be accessed via IE and Firefox.

Lively allows user to create their own online spaces that can include natural or human-built settings and customize their avatars (which are relatively cartoonish in comparison to SL avatars). Google’s engineering manager for Lively [Niniane Wang] explains that they wanted to create a more socially rich environment than was possible with emotes and other chatroom features.

Lively’s core functions are not particularly novel, but it does innovate with various web integration features. Videos and images from the internet are viewable from within Lively, and users can embed their own personal Lively areas into their blogs or websites (hello VRML).

Lively is not nearly as expansive as Second Life yet, with no form of currency included and only stock items, clothes, avatars, and geometry to choose from. What’s more, it is only available for Windows XP and Vista, with no other OS support announced. We can see this getting better in the future, but those of you who’s lives are so great that you need a second one (or a third) will probably want to jump on this now.

Continue reading “Lively, Google’s Stab At Second Life”