Lego's Smart Brick Gives the Iconic Analog Toy a New Digital Brain

An anonymous reader quotes a report from Wired: At CES in Las Vegas today, Lego has unveiled its new Smart Play platform, aimed at taking its distinctly analog plastic blocks and figures into a new world of tech-powered interactive play -- but crucially one without any reliance on screens. Smart Play revolves around Lego's patented sensor- and tech-packed brick. It's the same size as a standard 2 x 4 Lego brick, but it is capable of connecting to compatible Smart Minifigures and Smart Tags and interacting with them in real time. By pairing these components, kids big and small can create context-appropriate sounds and light effects as they play with the Danish company's toys.

[...] Lego is claiming this Smart Play platform developed in house by the company's Creative Play Lab team in collaboration with Capgemini's Cambridge Consultants "features more than 20 patented world-firsts within its technology." The heart of the system is the Smart Brick's custom-made chip, measuring smaller than a standard Lego stud. Other elements crammed into the eight-stud brick are an LED light array, accelerometers, light sensors, and sound sensor, and even a miniature speaker. The internal battery will supposedly work even after years of inactivity, and to avoid any need for cable access to the Smart Brick once it's built into a beloved creation, Lego has also added wireless charging. Indeed, Lego has made a charging pad that will power up several Smart Bricks simultaneously.

That all-important brain chip is a 4.1-millimeter custom mixed-signal ASIC chip running a bespoke Play Engine, which interprets motion, orientation, and magnetic fields. A copper coil assembly enables the brick's tag recognition, while a proprietary "Brick-to-Brick position system" uses these coils to sense distance, direction, and orientation between multiple Smart Bricks. Moreover, Lego claims this use of multiple Smart Bricks creates a "self-organizing network" that requires no setup, no app, no central hub, nor external controllers -- and so no screens. A Bluetooth-based "BrickNet" protocol shares the data between the Smart Bricks.

Sounds are handled by a tiny analog synthesizer putting out real-time audio (thus minimizing memory load) via the brick's miniature speaker, which uses the brick's internal air spaces to amplify sound. As a result, the audio effects are apparently immediate and can be used to enhance play with real-time sound. Lego insists there are no prerecorded clips of lightsabers or other pieces of audio being used as a cheat. Just like the Smart Minifigs, the 2 x 2 studless tile tags trigger sounds, lights, or behaviors tied to where they are placed or how they are played with. They communicate with other components through near-field magnetic connections. Each tile has a unique digital ID, which is read by the brain brick, while the minifigures -- outwardly identical to standard minifigs -- carry their unique digital ID on an internal chip.

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