A Robot is a Creative, Original Toy

The Roboreptile comes with a remote control and a hood accessory

The Roboreptile has infrared "vision" sensors where its eyes would be and stereo "hearing" sensors on the sides of its face. Its sounds, though a bit tinny, are menacing. During a tail swipe, it lets out a sort of Eagle cry, harkening back to the shared avian/reptile ancestry.

Controlling the Monster
Controlling the Roboreptile with the remote is a bit of a strain. First, because the remote uses an infrared beam and the pick-up sensor is located in its head. You won't be able to control it from far away, and it's difficult to control while walking away from you. Roboreptile will keep executing a command until it receives a new remote command.

Second, each button on the remote has two alternate functions: an attack set and a program set. When the remote is on the program setting, the alternate functions light up in red for each button but, for some reason, when the remote is in the attack setting, we're left to refer to the instruction manual (or our own memories) for that set's functions. For example, to make the roboreptile bite, you first have to get the remote into attack mode by pressing the select button until the remote display turns green. Then you press the button marked "Roam."

Another counter-intuitive thing about the controls is that the left and right buttons respectively make its left and right legs move, turning him in the opposite direction. I expected the left button would make him turn left, but instead it turns him right. The instructions also say that it can make both stationary and forward turns but I could only manage to execute stationary turns.

When using the "feed" button, the Roboreptile will track the remote's movement from side to side. If it moves too much, though, Roboreptile could get dizzy.

Control issues aside, it is genuinely alarming--in a Jurassic Park sort of way--when this little beast lunges at and tries to bite your foot.

From Satisfied to Hungry in 60 Seconds
Roboreptile can be operated in direct control, free roam, and program modes. Direct control is its natural state, where the user becomes puppeteer, moving it with the remote control. There is a surprising range of motion for this robot. It can walk forward on four legs or two, jump, swipe its tail from side to side, bite, shake, and even look dizzy, as though it had just been smacked by a bigger dino. It even has different walking gaits: fast, slow, big steps, small steps.

It'll go into free roam mode after a few minutes without controller input or if the "touch sensor" (actually just a button) on its back is pressed. It avoids obstacles by backing up and trying a different angle and exhibits three different moods: Hungry, Satisfied, and Hooded. Hungry is its natural state, agressive and snappy. Satisfied comes after it's eaten--in this case, gone through a feeding animation cycle where it crows and snaps its jaw--and this makes it lethargic for about a minute before it's hungry again. Using the included hood, or cowl, to snap over its vision and hearing sensors and effectively put him in sleep mode.

There's also a program mode where you can enter a series of up to 20 steps. Think of it as dance choreography, only with tail swipes and biting. You can put Roboreptile into guard mode, where it'll sit upright, poised for attack. If anything gets picked up by its sensors (passes within inches of its face), it will let out a growl and lunge in that direction. Its hearing is better than its sight (wasn't that the case with dinosaurs, too?), so in the guarded state, it'll react to a slamming door or a whistle with a howl and swinging its neck from side to side.

Parents should note that Roboreptile comes with two volume settings: loud and soft. We tested it on a hardwood floor and kitchen countertop and noticed that, even on the soft setting, its hard plastic thumps and servo motor whirs still created a sizeable ruckus. --Porter B. Hall

Movement
RobosapienV2 is able to walk forward in four different styles, or gaits. He normally uses his IR vision and touch sensors built into his feet and hands to avoid obstacles, but if put into bulldozer mode, he will walk forward or backward and try to push his way through anything.

Beyond controlling him manually with the included remote controller, RobosapienV2 can explore his environment independently in free roam mode. You can also direct his movements by using the remote's targeting feature--just point the beam to a spot on the floor and he will walk toward it.

RobosapienV2 has been designed with a full range of motion. He can turn his head just like humans. So, too, can he turn at the hips and can move them forward and back and from side to side. RobosapienV2 can move each arm independently, and his hands can grab, pick up, and throw light objects, such as the included bowling balls and pins. He even comes preprogrammed with a selection of dance moves.

Direct RobosapienV2's movements with the remote's targeting beam and watch him walk toward it.

Sensors
RobosapienV2 is equipped with a powerful vision system that lets him track the movement of objects in his field of view by moving his head and body. He will react differently to things based on their distance from his sensors. He uses his onboard color camera to identify primary colors and skin tones. This helps him identify his bowling ball and pins, and bowling is his favorite game. His ability to detect skin tones helps him know when people are waving to him or when it's time to shake hands.

RobosapienV2 comes with a controller, a green bowling ball and 3 red bowling pins.

He also has hearing sensors that help him detect people in his proximity, tilt sensors that interrupt most functions to prevent damage should he fall, and grip sensors that tell him whether he's been successful in picking up an object.

Programming
RobosapienV2 can be programmed to move in many different ways. You simply enter moves into the program using controller commands, and RobosapienV2 will remember them in order. You can enter walking steps, arm and upper body movements, demos and animations, and even program subroutines. Once he's in guard mode, RobosapienV2 will execute the program if he hears a sharp noise or senses movement in front of him. The little guy faithfully remembers his program, even after being shut off, until he's reprogrammed or reset.

Robo Companions
RobosapienV2 can interact with other Wowwee robots, such as the Robopet and the Roboraptor. Just have the robots face each other and watch for surprising interactions.

Out of the Box
The main part of the kit is the NXT itself. It's about the size of an iPod (though a bit thicker) with a a loudspeaker, a monochrome LCD, and navigation keys on the front. This is the controller for the robot--it's brain, if you will. It has three ports on top for connecting to the servo motors and four ports on the bottom for connecting to four different sensors: Touch, Light, Sound, and Ultrasonic (see detail below).

The NXT: the computer-controlled brain of the Mindstorms robot Touch Sensor: enables the robot to feel and react to its environment Sound Sensor: enables the robot to react to sound Light Sensor: can detect light and color Ultrasonic Sensor: allows the robot to measure distance and react to movement Servo Motors: ensures the robot moves with precision

The set includes Ethernet-like wires for connecting all of these to the NXT, as well as software and a basic USB cable for downloading programs from your computer. Then there are all the Lego parts, hundreds of them, and most are very small. It would be a good idea to get a plastic organizer for the different parts--it would not only make construction and storage easier but also part loss less likely.

Hitting the Bricks
The instructions for MNXT are simple, illustrated, and they gently take the new user on an introductory path through the system. The quick start guide promises a 30-minute robot building and programing intro, though for me it was closer to 50 (I'm a little old and slow). It starts with a simple diagnostic routine which shows you how to test the function of all sensors, then proceeds to step-by-step picture instructions for building a basic first robot. It's about as complex as building a piece of Ikea furniture.

Next, I installed the software. Be sure to check the system requirements (below). The software is well-designed and very intuitive. It comes with built-in video instructions on how to create your first simple program and download it to your NXT.

Bringing It To Life
Programming is the real gem in this system. It has a drag-and-drop interface using pre-programmed objects that you pull from a palette and snap to other objects. Each object is configurable. For example, the Sound object brings up a sub-window that allows you to choose between a tone and a list of sound files, set the volume, set duration, and so on. Little Lego bricks between the objects reinforce the idea that building a NXT program is like building a Lego model. Programming this way is much easier than, say, creating a web page from scratch. Lego even offers a software development kit for getting deeper into the programming.

Mindstorms NXT "challenges" from top: Tribot, RoboArm, and Spike.

There comes a genuine thrill from seeing something you've created--even something simple and silly as my first program--come to life in a robot. It's akin to seeing yourself on TV for the first time. I played that program a dozen times.

The software contains "challenges," which are similar step-by-step instructions for creating and programming more complex models, such as a robotic arm that can "perform simple tasks and react to different colors." Each challenge is divided into smaller tasks with step-by-step building, programming, and testing guides for each task.

Accessing your latest program once it's downloaded to the NXT is pretty easy. Lego has set it up so that you can execute it by pressing the big orange center button four times in a row after start-up. I was surprised to find out that you don't need a computer to program the NXT. You can program directly into the NXT Program submenu.

Bluetooth Ready
The NXT also has built-in Bluetooth wireless technology. If your computer has Bluetooth, you can test and download programs to the NXT without connecting the USB cable--a really handy feature if you're programming a complicated dance routine and you don't want your robot getting tripped up in cables. If your phone or PDA has Bluetooth, you might be able to use your device to control the robot. Best of all, Bluetooth allows you to create a network of up to three NXT devices. Think of the possibilities: three NXTs plus three sets of blocks and sensors equals bigger, more complex robots.

My one and only complaint is that I wish the sensors had more "studs," those little round parts that allows Lego bricks to interlock. --Porter B. Hall