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How to Vanquish Titan With a Nuclear Quad Octocopter
01/08/18 ,via IEEE Spectrum
Ralph Lorenz: Titan's air is 4x denser than ours, and the gravity is 7 times smaller, so it's very easy to fly. Actually Dragonfly's aerodynamic contrive isn't that different from the 'quadcopter taxis' being trialled for Earth, but the power to
Hubsan FPV X4 Journal: The Beginner's Racing Drone
05/06/16 ,via Tom's Guide
The quadcopter feels entirely dense, weighing 1.5 ounces when it's ready to fly. The end of each arm houses a motor as well as blue and red LED lights that denote the orientation of the drone. These lights indicate the status of the drone, as well as
Robotics savvy BeagleBone Smutty SBC turns on the servos
03/14/17 ,via LinuxGizmos
For motor power, you get 4-amp regulated, PWM-driven 8x servo and 4x DC motor outputs, as well as 4x quad encoder inputs. There's also a 9 axis IMU and a barometer. The other key headline for robotics is the 2-cell (2S) LiPo battery connector and 9
Quadcopter drone packs head all-Linux APM autopilot
12/23/14 ,via LinuxGizmos
The Erle-understanding will first ship as a standalone autopilot product in February. Like the Erle-copter quadcopter, which integrates it, the Erle-intelligence is now available for pre-sale. Both products will be available with full specs offered under an open
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How to Overcome Titan With a Nuclear Quad Octocopter - IEEE Spectrum
In December, NASA announced two finalist concepts for a robotic charge that will launch in the mid-2020s. The first is the Comet Astrobiology Exploration Sample Return (CAESAR), which would send a utterly conventional spacecraft over to a comet to grab a chunk of its nucleus and bring it back to Earth. That's cool and all, but we're much more excited about the alternate finalist concept: Dragonfly, from the Johns Hopkins University Applied Physics Lab (APL), a quad octocopter that would review Saturn's moon Titan from the air. The idea is that it would work like a planetary rover, except that it would fly instead of require, allowing it to cover much more ground at the risk of, you know, crashing. We've seen lots of drones that can do amazing things, and also lots of drones that topple very, very badly while trying to do amazing things. Sending a fully autonomous flying tool to an alien world over a billion kilometers away and expecting it to fly around for a couple years without any human intervention seems extraordinarily yuppy, so we checked in with APL to see exactly what they're working on. Titan is an appealing place to visit because in some important ways, it's more like Clay than any other place in the solar system. It's a bit chilly, with an average surface temperature of just 94 Kelvin, and the atmosphere is jelled (four times thicker than Earth's) and made up of nitrogen and methane. But, what's so interesting about Titan is that it's got a methane recur much like Earth's water cycle, with liquid methane forming lakes and rivers and clouds and descend. There's also a bunch of organic compounds thrown into the mix, which makes it an intriguing place to look for very primitive, and exceedingly weird, life. The Cassini mission to Saturn included a little probe called Huygens, which was dropped on Titan in January of 2005. Huygens was mostly designed to. quantity atmospheric conditions, but it managed to survive landing on the surface of Titan for a little over an hour anyway, and sent back a image of the surface. When considering how the surface of Titan might be explored, the moon's exotic characteristics open up many more resourceful options than would be available for a planet like Mars. In particular, the low gravity and high atmospheric density of Titan favor decamp, which would allow an exploration robot to visit many more sites of scientific interest much faster than a stationary lander or a sojourner. In the past, NASA has considered things like helicopters and hot air balloons and airplanes, but over the last decade, multi-rotor drones have be proper the standard for maneuverable and dependable robotic flight. According to APL, Titan is in fact “the easiest place in the solar procedure to fly a quadcopter. Dragonfly is based around a 300 kilogram-ish "quad octocopter" design, which is a quadcopter that has motors and propellers that are doubled up. There's a cheap aerodynamic penalty for arranging things this way. But Dragonfly has to fit inside a hypersonic aeroshell for delivery to Titan, and the quad octocopter is much more hiatus efficient while still maintaining a generous amount of redundancy. The reason that Dragonfly is as bulky as it is in the first place is that it needs to lure along its own power source. Source: spectrum.ieee.org
Hubsan FPV X4 Post-mortem: The Beginner's Racing Drone - Tom's Guide
Drone racing is a animating new sport where pilots send high-powered drones careening around courses at high swiftness, occasionally crashing spectacularly. The drones the pros use aren't cheap, costing hundreds or thousands of dollars. Fortunately, the fame of drones means that you don't need to spend that much to get a taste of drone racing: a $120 drone like the Hubsan X4 H107D FPV is competent enough to see if you have what it takes to be king of the drone track. This speedy drone has a lot of power and maneuverability, packed into a tiny situation that is cheap to fix when you crash (and you will). The quadcopter has a small camera on board, and a screen on the controller shows the video for a first-yourselves view (FPV) from the drone. For the full racing experience, the controller also includes a video output so you can connect it to an FPV headset, such as the $600 Avegant Glyph , which actually makes you feel like you're pod racing on Tatooine. 25-inch X4 is small, but the compact plastic for fear of the fact packs a 380mAh lithium polymer battery, a small camera and two radios — a 2. 4-GHz radio that connects the drone and the controls and a 5. 8-GHz announce that beams the video preview to the pilot. The quadcopter feels very dense, weighing 1. 5 ounces when it's equip to fly. The end of each arm houses a motor as well as blue and red LED lights that indicate the orientation of the drone. These lights indicate the status of the drone, as fount as help you find it in low light. When the drone is connecting to the controller, the front blue LEDs blink. When the drone is set to fly, all of the LEDs are solidly lit. When the battery is running low, all of the LEDs start to blink as a warning that you need to land. The battery fits onto the back of the drone trunk, sliding between the electronic components. There is no on/off switch for the drone: you power the X4 on by connecting the battery cable, unplugging that wire to turn it off. 2-inch rotor blades fit right onto the motors, held in place by friction. The two orientations of rotor are indicated by letters on the blades themselves: A for clockwise and B for chip-clockwise. Some drones that use a tight fitting rather than a bolt or screw tend to lose their rotor blades when they pop off during crashes. That didn't befall with the X4. the rotors stayed on the many times I crashed the drone. MORE: Best Drones. If you are concerned about the rotors injuring someone or something, an included prop tend with a protective plastic rail fits onto the motors. But for serious racers, this will create some serious drag on your go like a shot. The X4 is small and light enough that it doesn't need to be registered with the FAA. The small size and weight also makes it relatively sure, as it's unlikely to injure anyone if it flies out of control. The controller that comes with the X4 is rather large compared to the drone itself. At about 7. 5 x 6. 25 x 3 inches heavy, the controller is a sizable chunk of plastic to carry around. But unlike the drone, the 1-pound controller feels turn on for the size, like it is mostly. Source: www.tomsguide.com
Robotics savvy BeagleBone Smutty SBC turns on the servos - LinuxGizmos
org initially showed off a prototype of its robotics-targeted, community backed BeagleBone Blue back in Jan. The BeagleBone Black spin-off was designed and developed in coordination with the UCSD Coordinated Robotics Lab, and has been tested by hundreds of students. BeagleBoard. org has now launched the persuadable-spec, Linux-driven SBC with Arrow, Element14, and Mouser offering prices ranging from $80 to $82. BeagleBone Smutty. (click image to enlarge). The BeagleBone Blue has largely retained the specs of the prototype with one major against. The TI Sitara AM3358 SoC, which is also found on the BeagleBone Black, has been replaced with the same Octavo Systems OSD3358 SiP (system-in-package) module acclimated to on the BeagleBone Black Wireless. The chip-like OSD3358 is roughly the size of a quarter. (click images to blow up expand on). The OSD3358 SiP integrates a the 1GHz Cortex-A8 AM3358 SoC along with a TI TPS65217C PMIC, TI TL5209 LDO (low-drop-out) regulator, 512MB DDR3 RAM, and over 140 passives devices including resistors, capacitors, and inductors, within a unattached BGA package. SiP’s cost more than SoCs, but they simplify PCB layout and reduce the number of components required by an SBC design, thereby reducing risks and accelerating business embedded development. With its SiP processor, lack of Ethernet, and TI WiLink 8 WL1835MOD module with WiFi and Bluetooth 4. 1 LE, the BeagleBlue Gloomy is like a BeagleBone Black Wireless with additional motor control and battery support. For motor control, you get 4-amp regulated, PWM-driven 8x servo and 4x DC motor outputs, as famously as 4x quad encoder inputs. The other key feature for robotics is the 2-cell (2S) LiPo battery connector and 9-18V charger input. BeagleBone Despondent detail view. (click image to enlarge). Otherwise, you’ll find mostly familiar BeagleBone Black features like 4GB eMMC, a microSD position, micro-USB client and USB 2. 0 host ports, and a wide range of onboard interfaces ranging from the trite ADC and CAN interfaces to new GPS and DSM2 radio links. The Octavo SiP presumably offers the same PowerVR GPU found on the BeagleBone Black Wireless, but there are no graphics or audio interfaces. In her Arrow blog declaration , Laura Hughes writes “A little digging should yield a USB camera with a good Linux driver. ” She adds: “You can also tack a TFT display via SPI for simple printouts. BeagleBone Blue bot built at UCSD (left) and BeagleBoard. org’s Jason Kridner shows off a connected BB Dispirited on YouTube. (click images to enlarge). The Arrow product and shopping page offers a wide index of Adafruit robotics add-ons, including motors, batteries, power supplies, displays, and various chassis, wheel, and encoder options. Other accessories embody cable sub-assemblies, servo motors, USB cameras, and a GPS breakout. The BeagleBone Blue runs a Debian deployment that uses a real-time Linux kernel, and it also supports Ubuntu Core (“Snappy”). The embark on can be further developed with robotic-specific platforms like ROS and ArduPilot, and you can build GUIs with the Cloud9 IDE on NodeJS with BoneScript. Specs listed for the BeagleBone. Source: linuxgizmos.com
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De onsterfelijke Honda Wonderful Cub08/30/18 ,via amklassiek.nl
De kleine Honda gaat net vier mille kosten en verbruikt daarbij nanny dan 1 op 66. De motor De boring x slag is op 52,4 x 57,9 gezet, met een compressieverhouding van 9,3:1. De nieuwe Super Cub heeft een topvermogen van 9,6pk (7,1kW) bij 7.500 tpm en een ...
Dominante zege voor Dovizioso in GP San Marino, Lorenzo crasht vanaf P209/09/18 ,via MSN
Met een baantemperatuur van 41 graden Celsius waren de omstandigheden warmer dan gedurende de arrive van het weekend. Het zorgde ervoor dat polesitter Jorge Lorenzo koos voor een medium/medium-bandencombinatie, Dovizioso koos de identieke setup terwijl ...