Wednesday, 23 September 2015

Atlas Kicked!

We love robot competitions, and the only bad thing about them is that we don’t have the time (and, er, travel budget) to cover them all. The biggest robotics event happening this week was RoboCup, in Hefei, China, and we have some videos of that for you. But first, let’s watch a 150-kilogram robot getting kicked, shall we?
Warner, the WPI-CMU Atlas, was the only robot that didn’t fall or need a reset at the DARPA Robotics Challenge Finals. In fact, the team was “thrillednot to be included” in this compilation. The video below shows their “robust lateral balance” practice, including a human “interacting” with an operating Atlas, which is something we had never seen before. 
The robot recovers very nicely. Atlas kicked, Atlas shrugged.


Robojentics (Robotics), Sweeya Virtu Hub, Rajahmundry.

Tuesday, 22 September 2015

Sphero BB-8

Over the years, the magic of Star Wars has always lived on screen and in our imaginations. Thanks to our advancements in technology, we’ve made it possible to bring a new part of Star Wars: The Force Awakens into your home. Meet BB-8 – the app-enabled Droid that’s as authentic as it is advanced. BB-8 has something unlike any other robot an adaptive personality that changes as you play. Based on your interactions, BB-8 will show a range of expressions and even perk up when you give voice commands. Set it to patrol and watch your Droid explore autonomously, make up your own adventure and guide BB-8 yourself, or create and view holographic recordings. It’s now possible to explore the galaxy with your own trusty Astromech Droid by your side. BB-8 is more than a toy – it’s your companion.



As you might have suspected by its design and the company behind the project, BB-8 by Sphero is a rolling robot powered by your phone or tablet. Just like Sphero and Ollie, the app is designed to make an effortless connection to your robot and get you driving as quickly as possible. Just start the app, hold your phone or tablet near BB-8, and when it lights up you're good to go.
The driving portion of the app gives you a large virtual joystick and an orientation pad. Point the orientation dot to yourself, and whatever direction you slide the virtual joystick is the direction BB-8 will travel. The interface for driving couldn't be more simple, but since you're driving a rolling ball there's a bit of a learning curve. If you've ever used the original Sphero ball you've got the basics, but the addition of BB-8's head adds a layer of complexity in driving.
You can drive BB-8 on just about any flat surface, but things are a little different on each surface. On most carpets, BB-8 will be the most stable but not quite as fast when you first give a movement command. Hardwood and similar hard, flat surfaces are the best for BB-8 for movement, but it's easy for the robot to slide out of control for a moment or two. Gritty surfaces like pavement are the best of both worlds as long as the surface is nice and flat, but if you're on a road or a similarly imperfect surface, BB-8 tends to overcompensate any time there's a bump which frequently leads to pauses while the robot re-orients.
As a brief aside, there's no need to worry about those gritty surfaces damaging the outer shell of BB-8 as long as it is driven on the ground. Like all Sphero robots, the outer plastic is tough and stands up to quite a bit of abuse. That having been said, one of the fastest ways to deal permanent damage to BB-8 is to drive it off of something and let it fall off a table or down a flight of stairs. As long as you drive it on the ground, and that ground is nice and flat, BB-8 is a lot of fun.
Above all else, BB-8 will try to keep the magnetically attached head connected to the body. This means it turns a little slower to keep the head on the top half of the body, and while its top speed is right around the same as a Sphero ball it takes a little longer to get there. If you're not happy with how long it takes to reach that top speed you can tap the boost button in the interface, but if you lose control and there are kids around the results can be a little on the traumatic side when the head goes flying. Fortunately, all you need to do to remedy the situation is set the head back on top of the ball.
The rest of the driving interface is accessories for making BB-8 feel more like the bot we'll see in the upcoming Star Wars movie. You can make it shake the head yes or no, spin all the way around, shake with fright, and perform simple movements like a square or a figure-8. Each of these actions is accompanied by some audio, much in the same way you'd hear R2-D2 chirp as it moved. These sounds all come from your phone, which is cool when you're in a small room where everyone can hear BB-8 but somewhat less exciting when outdoors. Ideally, BB-8 would have its own speaker for this sort of thing, but when it works the audio accompaniment is cute.

Robojentics (Robotics), Sweeya Virtu Hub, Rajahmundry.