Robot App Store

image description

Robopedia

Welcome to Robopedia

The robotics encyclopedia that covers everything robotics.
 | News

Robotics news



moviepilot.com

The Movies Were Real... Full Weird View Inside Sex Robot from the Future!
moviepilot.com
Remember the Fembots from the Austin Powers movies? Or the foxy cyborg ladies of Battlestar Galactica? Well, turns out that futuristic vision of sex-a-delic frisky robots may not be too far off... French 3-D artist Cesar Vonc has designed an actual sex ...



The Register

Don't panic, US Navy has only deployed a ROBOT SHARK (but where are the ...
The Register
"GhostSwimmer will allow the Navy to have success during more types of missions while keeping divers and sailors safe," said Michael Rufo, director of Boston Engineering's Advanced Systems Group (ASG), which designed and built the robot. "This AUV ...
Navy Deploys Robot Sharks. Yes, ReallyDiscovery News
The Navy's New Robot Looks and Swims Just Like a SharkSlate Magazine (blog)
GhostSwimmer: US Navy trials underwater shark robotTelegraph.co.uk
People Magazine -Newsweek -Popular Science
all 192 news articles »


Gizmodo

Holy Crap, This Guy's Got Two Mind-Controlled Robot Arms!
Gizmodo
Great news, everyone! We're one step closer to the Ghost in the Shell future we've been promised since 1995. Leslie Baugh has become the first shoulder-level double amputee to receive a pair of robotic arms. And the best part is, they're mind-controlled.
Watch a shoulder-level amputee control his new robot armsWashington Post
Double amputee controls two robotic arms with his mindEngadget
Double-Amputee Gets Two Badass Robot ArmsKotaku
TechCrunch
all 80 news articles »


Hollywood Reporter

USA's Hacker Drama 'Mr. Robot' Ordered to Series
Hollywood Reporter
"Mr. Robot could not be more timely and relevant," said USA president Chris McCumber. "The creative team behind this series has done a brilliant job, taking viewers on a wild ride that leaves them wanting more. Rami gives a masterful performance as a ...
'Mr. Robot' Hacker Drama Ordered to Series at USA NetworkVariety
Hacker Drama 'Mr. Robot' Picked Up To Series By USADeadline.com
Christian Slater's Mr. Robot Gets Series Order at USA NetworkTVLine
UPI.com -E! Online -TV.com
all 72 news articles »


Computerworld

Army lab asks help building wing-flapping robot fly
Computerworld
Researchers at the U.S. Army are taking advantage of an unusually unclassified approach to military systems development to ask for help turning a clever robotic fly into an almost undetectable spy. The robotic flies are – or will be – semi-autonomous ...



Why a 6-foot-2 robot found itself cramped in coach on an 11-hour flight
Washington Post (blog)
If you needed to get a robot from Los Angeles to Germany, how would you do it? Shipping it in a package seems like an obvious solution. But researchers Alexander Herzog and Jeannette Bohg know better. Their German robotics lab once shipped a robotic ...



blogs.hbr.org (blog)

What a Hitchhiking Robot Can Teach Us About Automated Coworkers
blogs.hbr.org (blog)
When we set out to see if a robot could hitchhike across Canada, we were trying to initiate discussions about trust, notions of safety, and about our attitude towards technology. We also wanted to see, of course, whether a robot could hitchhike across ...


Featured article

Force Sensing Resistors
Force Sensing Resistors
A Force Sensor resistor (FSR) is a special material that changes resistance with the application of force. Force sensing resistors are typically very thin in profile – which offers advantages when force-sensing abilities are needed in tight spaces. A FSR is usualy a mixture of suspended conductive particles, than when compressed / forced together, increase the conductivity of the material – and hence can sense force.

Pressure and force transducers include a large grouping of sensors. Some return a digital (on/off), or analog (varying voltage feedback) signal and can be used to detect position, force & pressure, or obstacles to avoid.

Many times these sensors are classified as “tactile” feedback devices because in order for them to return useful information, they must contact the element under investigation (touch, push, squeeze, etc.). Robots that utilize these pressure or force feedback sensors use this data to gather more information about their interaction with the environment. An example of their application might be a gripper with pressure sensitive pads integrated into its gripping fingers. As the gripper squeezes an object to pick up, the pressure sensitive pads will tell the robot how hard it is gripping and can be mindful to not exert too much force (such as when gripping fragile objects). Pressure sensitive information can also be used to determine if the robot can properly handle/lift objects without compromising its safety, or provide critical information about balance, motion, or even drive-train efficiency.

Simplistic Pressure feedback and Pressure Switches:
Pressure and force data can be sensed in a variety of ways. One of the most simplistic ways is to incorporate a spring and a potentiometer combination. As the spring deforms with force, the potentiometer feedback is used to determine the displacement of position - and thus allow the controller to deduce the force upon the object. Bumpers used on the outside of robots such as the Roomba rely on similar setups, except they use a digital switch; When the force reaches a certain level it toggles a switch which alerts the robot of an obstacle.


Force Transducers:
More advanced pressure and force sensors rely on material properties to deduce force. Force transducers for example are based upon the principle that all materials deform when a force is applied. Even though this deformation might be too small to see with the naked eye, all materials deflect when a force is exerted on them - and as more force is applied, the material will deform to a greater extent. If you can detect this change in deformation and know how much the material will deform per unit of force applied (based on material properties), you can easily determine how much force is being applied to the object. This is very similar to the “potentiometer and spring” concept noted above, except on a much smaller scale. To detect this material deformation, force transducers use what are called strain gauges .

A strain gauge is a very flat resistor that is cemented to the surface of the deforming material. The resistor is patterned into a long flattened coil-looking shape than when deformed - causes a slight fluctuation in resistance. This miniscule change in resistance can be amplified with proper circuitry and then detected by a micro-controller to provide force feedback data. Depending on their size and form, force transducers can be used to detect almost any level of force - ranging from a few ounces to many thousands of pounds. They are used in a host of different situations, from detecting forces within gearboxes to digital scales and are used in places that you might not even expect!

Other types of Tactile Pressure Sensors:
Another type of pressure sensor takes advantage of the “piezoelectric effect”. A few select materials display this particular quality, however the effect occurs when these materials are quickly placed under stress / force. As these materials are “squished” they generate a voltage. This voltage can be detected and will vary based on the force applied. A great example of the piezoelectric effect in action are BBQ lighters. When you push the button, it releases a spring that quickly strikes a piezoelectric crystal - and causes many thousands of volts to be generated, leading to a spark. Piezoelectric material are placed in sensors, however only supply accurate data for very brief periods of time (called dynamic forces) and thus only useful for detecting quick and sudden changes of force.

One more common type of sensor employs special resistors that change resistance when force is applied to them (called a force sensing resistor - FSR). Capacitive sensors rely on object deformation, but measure capacitance instead of resistance to determine deflection. Diaphrams are integrated into sensors to detect gas pressure, and even light can be used to detect pressure. Light, when directed at an angle to a surface will bounce back to a certain location. As the surface deforms with pressure - the light shifts in reflected location and force can be determined.

Anyway you look at it, pressure and force can be detected in many different ways. The main takeaway is that most all force sensors are based on the idea that a force will result in material deformation. There are different ways to sense this deformation and can be utilized to determine forces or pressures.


External Links


Did you know..

  • ... That The NAOqi is the proprietary framework that used to control the NAO robot. You can program th...
  • ... That A CPU stands for Central Processing Unit. The CPU carries out the instructions in a program by performing basic arithmet...
  • ... That A Current Limit can be set in software to limit the amount of current sent to a motor or joint. This will redu...
  • ... That A Sensor is a device that measures a physical quality and transfers it into a form of information that can be read b...
  • ... That An Accelerometer is used to determine the magnitude and orientation of acceleration. One of its main uses is to...

Featured robot

Sphero
The Sphero is a robotic ball that you control with a tilt, touch, or swing from your smartphone or tablet.

Bluetooth controlled robotic ball – 50 foot plus range.
• Multi-colored LED capable of producing thousands of colors.
• Reach speeds of up to 3 feet per second with precise control.
• Internal guidance system including gyro, Accelerometer and compass.
• Charge time: Approximately 180 minutes.
• Drive time: Over 60 minutes at full speed.