One of the major challenges of animatronics is creating natural looking motion. You can build something with an actuator for every possible degree of freedom, but it will still be disappointing if you are unable to control it to smoothly play the part. [Mr. Volt] has developed a passion for animatronic projects, but found programming them tedious, and manual control with keyboard or controller difficult to do right. As an alternative, he is building Waldo, an electronic puppetry controller.
The Waldo rig is being developed in conjunction with [Mr. Volt]’s build of Wheatley, the talkative ball-shaped robot from the Portal 2 game. The puppetry rig consists of a series of rings for [Mr Volt]’s hand, with the position of each being read by angle sensors. This allows him to control Wheatley’s orientation of the body and eyeball, eyelids, and handles. Wheatley and Waldo both still need a few refinements, but we look forward to seeing the finished project in action.
The Portal games have inspired several featured projects, including GLaDOS, the turrets, and of course more Wheatly builds.
Continue reading “Animatronic Puppetry Controller Skips Joystick Or Keyboard”
[Michael Horne] recently shared his thoughts on the RedBoard+, a motor controller board for the Raspberry Pi aimed at robotic applications. His short version for busy people is: if you’re at all into robotics, get one because it’s fantastic.
At heart the RedBoard+ is a motor controller, but it’s packed with I/O and features that set it above the usual fare. It can drive two DC motors and up to twelve servos, but what is extra useful is the wide input range of 7-24 V and its ability to power and control the underlying Raspberry Pi. A user-programmable button defaults to either doing a reboot or safe shutdown, depending on how long the button is held. Another neat feature is the ability to blink out the IP address of the Pi using the onboard RGB LED, which is always handy in a pinch.
The RedBoard+ has a GitHub repository which provides a variety of test scripts and an easy to use library, as well as a variety of hookup guides and quickstart guides. There’s even a pre-configured SD image for those who prefer to simply dive in.
A brief demo video showing the board in operation is embedded below. If you’re interested in one, Creator [Neil] of RedRobotics has made it available for sale on Tindie.
Continue reading “Robotics Controller For The Pi Boasts An Impressive Feature List”
[Aldric Négrier] wrote in to let us know that his DriveMyPhone project has been open sourced. The project is a part telepresence, part remote-controlled vehicle, part robotic rover concept on which he says “I spent more time […] than I should have.” He has shared not just the CAD files, but every detail including tips on assembly. He admits that maybe a robotic chassis for a smartphone might not seem like a particularly new idea today, but it was “an idea with more potential” back in 2010 when he first started.
The chassis is made to cradle a smartphone. Fire up your favorite videoconferencing software and you have a way to see where you’re going as well as hear (and speak to) your surroundings. Bluetooth communications between the phone and the chassis provides wireless control. That being said, this unit is clearly designed to be able to deal with far more challenging terrain than the average office environment, and has been designed to not only be attractive, but to be as accessible and open to repurposing and modification as possible.
Continue reading “Smartphone-based Robotic Rover Project Goes Open Source”
There are many microcontrollers available to make robots with, but few that are built with the exact features that you would need to construct one. Meet the [EMGRobotics MSP430G2553] robot controller board.
At $15 without the CPU or $17 with a [MSP430G2553] already plugged into the socket, this control board may make some Arduino enthusiasts take note for their next project. Besides a very attractive price (you’ll have to go to the home page to make a purchase), this board ships with a built in IR range sensor and accommodations to drive up to four hobby servo motors. If this isn’t enough for you, two 3 volt DC motors can be soldered directly to connections on the board and controlled independently and in either direction. In other words you don’t have to muck about with trying to build your own H-bridge circuit, it’s all taken care of for you!
The article shows it controlling a Hexbug spider. [EMGRobotics] has actually done something similar (and well-documented) before with this platform, so be sure to check out the post about hacking the Hexbug iteslf!