In the heart of the D1 radar sensor is a radar chip based on Ultra-Wideband (UWB) radar technology from Novelda (www.novelda.no). An UWB radar sensor sends out electromagnetic pulses and looks at the pulses that are reflected back. When an electromagnetic pulse hits the wall in the video above, a part of the pulse is reflected back to the radar and a part of it penetrates the wall and is reflected from the cabinet behind the wall.
See-through-wall robot - [Link]
A low cost scalable robot system for demonstrating collective behaviors
In current robotics research there is a vast body of work on algorithms and control methods for groups of decentralized cooperating robots, called a swarm or collective. These algorithms are generally meant to control collectives of hundreds or even thousands of robots; however, for reasons of cost, time, or complexity, they are generally validated in simulation only, or on a group of a few 10s of robots.
To address this issue, Harvard University researchers Michael Rubenstein, Nicholas Hoff and Radhika Nagpal present Kilobot, a low-cost robot designed to make testing collective algorithms on hundreds or thousands of robots accessible to robotics researchers. To enable the possibility of large Kilobot collectives where the number of robots is an order of magnitude larger than the largest that exist today, each robot is made with only $14 worth of parts and takes 5 minutes to assemble. [via]
Buy or build your own Kilobot swarm - [Link]
Here’s a blog post that will show you the setup you’ll need to make your own do-it-yourself radio controlled (RC) tankbot from the ground up. This example uses a few kits from Solarbotics to build your own RC controller, communication link, and tankbot using minimal parts. We even managed to get 250 feet of range out of the deal! For this exploit we invite you to move over to the dark side, as the heart of the project isn’t Xbees but instead 2.4GHz IEEE 802.15.4 Radio Frequency Network modules from Synapse Wireless which are actually super simple to use and configure. This post will merely get you started with building a general RC platform, feel free to modify/hack the system to suite your own diabolical requirements.
Build Your Own RC Tankbot – [Link]
Chris The Carpenter has put together possibly the most complete robot module for the Propeller Platform. Called the 444AVXB, he writes… [via]
Let’s start with the name, 444-AVXB stands for:
4 Amps (2 amps x 2 motors) via a L298 motor driver
4 ADC’s (Analog inputs) via a MCP3204 chip
4 Servos with connections to power and with current-limiting resistors on the signal wires
Video-out via a standard RCA jack
Connections for an X-bee
Connections for a BlueSmirf Bluetooth unit
he 444-AVXB was designed with the robot hobbyist in mind. Connections are available for just about every “standard” thing you would find on a small to medium-sized robot. A hefty motor driver handles decent-sized motors with nice screw terminals for both power and motor connections. (4) 3-pin connections are provided for servos which can be powered by either external power or on-board power. An ADC chip allows for 4 analog inputs to be read, great for analog sensors, pots, LDR’s etc.
Video-out takes advantage of the awesome video capability of the prop and can be connected to any TV with a “video-in” and/or many of the cheapie 7” LCD screens (found on Ebay). Audio is just that, audio out with the circuit being the same as can be found on many other propeller products. Pin 15 has been brought forward as well for a Ping))) sonar unit. Finally, there is room and connections for EITHER an X-bee or Bluetooth module. All unused pins are accessible via female headers.
A Robot Module with Everything - [Link]
Robot System Description :
- 2 mobile phone vibrator
- AVR ATtiny45 Microcontroller
- IR RC5 Receiver for remote control
- NiMH rechargeable battery
- LED status indicator
- Dimensions 12mm x 10mm x 18mm
Wheels less smallest Robot “ROBO-BijanMortazavi” - [Link]
A group of researchers from Osaka University have created what they call The Omni-Ball. It’s made up of two matching hemispheres attached to either side of an axle. The hemispheres can move independently or together as a sphere. They then used the Omni-Ball to create the Omni-Crawler, a small vehicle that can move in all directions.
The Omni-Ball - [Link]
Line follower simulator. [via]
A model of differential driven wheeled robot is implemented. The width of the line sensor, the line sensor position and the wheel gauge (distance between the two wheels) can be adjusted.
Apart from the geometry settings, there is also a possibility to adjust the motor behavior. The “acceleration” scrollbar sets how quickly the robot chassis reacts to commands form the PID regulator.
Line follower simulator - [Link]
adafruit.com writes: [via]
In the spirit of the slow, automated writing machine in Kafka’s “In the Penal Colony”, but channeled through laser-cut plastic, hobby servos and ink, “The Bureaucrat” was at the NYC Resistor table at MakerFaire, stamping the date on hackerspace passports.
“The Bureaucrat” — A Hackerspace Passport Date-Stamping Machine - [Link]
The department of Mechatronics, Biostatistics and Sensors (MeBioS) of Leuven University, Belgium, together with Flanders’ Mechatronics Technology Centre (FTMC) successfully converted an existing mini tractor into an autonomous self-learning field robot.
The tractor learns to identify soil characteristics, and on the basis of results controls its speed and steering angle allowing it to follow a certain route very accurately, all without a driver. Precision in the control of agricultural machinery is an important feature for organic farming.
Self-learning driverless tractor - [Link]