Skip to main content

Home/ Robotics/ Group items tagged from

Rss Feed Group items tagged

Filter: All | Bookmarks | Topics Simple Middle
Astro Biology

Milky Way View From Space Station - 0 views

milky way spacecraft space exploration nasa news

shared by Astro Biology on 17 Oct 14 - No Cached
  • Astro Biology on 17 Oct 14
     
    The Milky way steals the show from Sahara sands that make the Earth glow orange. Reid Wiseman a NASA astronaut has captured this pic from International Space Station.
  • Astro Biology on 17 Oct 14
     
    The Milky way steals the show from Sahara sands that make the Earth glow orange. Reid Wiseman a NASA astronaut has captured this pic from International Space Station.
York Jong

「單」晶片控制多組 PWMs - 160 views

作者: ykjiang (York) 看板: Robotics 標題: Re: 「單」晶片控制多組 PWMs 時間: Wed Dec 13 00:17:04 2006 ※ 引述《happosai (八方齋)》之銘言： > 其實用 FPPA 產生 PWM 訊號一點都不難,因為那一顆CPU就只負責 > 產生PWM訊號，講白一點都是死迴圈，真正 update PWM 是另外一顆 > 負責，所以程...

embedded motor pwm

started by York Jong on 28 May 07 8 follow-ups, last by York Jong on 28 May 07
Astro Biology

Know More About Plenty of Water in Asteroid Fragments - 0 views

www.astrobio.net/...dance-water-asteroid-fragments

asteroid water fragment news from nasa space exploration

shared by Astro Biology on 28 Oct 14 - No Cached
  • Astro Biology on 28 Oct 14
     
    Do you know new study could provide visions about the abundance of water in fragments from a famous asteroid? This research mainly focused on a mineral called apatite. Want to know more about this asteroid?
  • Astro Biology on 28 Oct 14
     
    Do you know new study could provide visions about the abundance of water in fragments from a famous asteroid? This research mainly focused on a mineral called apatite. Want to know more about this asteroid?
York Jong

MetaCricket: A designer's kit for making computational devices - 0 views

www.research.ibm.com/...martin.html

5star cricket martin robot

shared by York Jong on 16 Jun 07 - Cached
  • All Cricket devices have a built-in bidirectional infrared communications channel, which is used for Cricket-to-desktop communication (when downloading programs to a Cricket, or viewing sensor data) and Cricket-to-Cricket communication.
  • Cricket Logo is based on an iterative, interactive model of project development. It includes a “command center” window; instructions typed into this window are instantaneously compiled, downloaded to a Cricket, and executed, giving the system the flavor of an interpreted software environment such as LISP, BASIC, or FORTH.
  • The MetaCricket software system is based on a virtual machine, written in PIC assembly language and running on the Cricket, and a compiler for the virtual machine running on a desktop development computer
  • ...13 more annotations...
  • It is straightforward to implement an interpreter-like interface, where user commands are transparently compiled, downloaded, and executed.
  • The Cricket virtual machine is burned into the PIC microprocessor's internal ROM
  • The user's code resides in a serial EEPROM
  • Built-in infrared communications routines include a protocol for reading and writing to this external EEPROM, and for asking the virtual machine to begin execution of byte codes already loaded into the EEPROM.
  • Users write programs for the Cricket in Cricket Logo, a dialect of Logo specialized for the Cricket virtual machine. Essentially, there is a one-to-one mapping between statements in Cricket Logo and primitive functions built into the virtual machine. This makes the implementation of the compiler far simpler than typical compilers.
  • The compiler includes an interactive mode—a text window where user expressions are compiled, downloaded, and executed in one step when the user presses the return key. A portion of the Cricket's memory is set aside for these dynamic programs.
  • we have found that a debugger is not necessary because of the interactive and incremental style of project development that occurs when using the Cricket.
  • The infrared protocol includes the following capabilities: Check that a Cricket is present and ready for other commands. Write a byte to the Cricket's EEPROM. Read a byte from the Cricket's memory. Begin program execution from a particular memory address.
  • User-level primitive functions compile to one, two, or three bytes of object code for the Cricket virtual machine.
  • The Cricket virtual machine has two process threads: a foreground process and a background daemon. In most Cricket programs, the foreground thread handles all the work, but for some tasks, the background daemon is valuable. For example, the background daemon can be used to instigate a periodic activity, or take action when some event occurs.
  • There are hardware-specific primitives for interacting with on-board Cricket hardware. Motor commands set state (on or off), direction, and power levels for each of the two integrated motor drivers. Analog sensor primitives (sensora and sensorb) return a value (0 to 255) for each of the two voltage inputs. These inputs also may be interpreted as digital values using the switcha and switchb primitives. There is a pair of primitive functions for generating tones on the piezo beeper: beep and note, the latter taking pitch and duration arguments.
  • there is a background millisecond timer that is updated every four milliseconds
  • One foreground thread plus one background daemon Daemon fires when provided Boolean expression makes false-to-true transition
York Jong

PHOTORESISTOR ALGORITHMS - 0 views

www.societyofrobots.com/rogramming_photoresistor.shtml

algorithm photoresistor photovore robot sensor

shared by York Jong on 14 Jun 07 - Cached
  • pseudocode: read left_photoresistor read right_photoresistor if left_photoresistor detects more light than right_photoresistor then turn robot left if right_photoresistor detects more light than left_photoresistor then turn robot right if right_photoresistor detects about the same as left_photoresistor then robot goes straight loop
  • Photovore Algorithm, Improved This algorithm does the same as the original, but instead of case-based it works under a more advanced Fuzzy Logic control algorithm. Your robot will no longer just have the three modes of turn left, turn right, and go forward. Instead will have commands like 'turn left by 10 degrees' or 'turn right really fast', and with no additional lines of code! pseudocode: read left_photoresistor read right_photoresistor left_motor = (left_photoresistor - right_photoresistor) * arbitrary_constant right_motor = (right_photoresistor - left_photoresistor) * arbitrary_constant loop
  • ...1 more annotation...
  • Photovore, Split Brain Approach This algorithm works without comparison of photoresistor values. Instead, just command the right motor based on light from the right sensor, and the left motor with only data from the left sensor. You can also get interesting variations by reversing the sensors for a cross-brain algorithm. pseudocode: read left_photoresistor read right_photoresistor move left_wheel_speed = left_photoresistor * arbitrary_constant move right_wheel_speed = right_photoresistor * arbitrary_constant loop
  • York Jong on 14 Jun 07
     
    The photovore is a robot that chases light, and is perhaps the simplest of all sensor algorithms. If you are a beginner, this should be your first algorithm.
York Jong

Light Sensors of The Ants: Hardware - 0 views

www.ai.mit.edu/...light-sensors.html

ants light mit sensor

shared by York Jong on 03 Jun 07 - Cached
  • Usually, the operating system takes all the values from the sensors, averages them, then finds the one that is the furthest away from that average
  • The Ant Farm is built next to a very large window that faces east. As a result, with the lab lights off, the brightest light source is always to the east. The robots can use this as a reference and then find all the other directions.
York Jong

Getting Started With Crickets - 0 views

llk.media.mit.edu/...getting_started.html

cricket logo robot tutorial

shared by York Jong on 09 Sep 07 - Cached
  • the Cricket's yellow LED flashes when the Cricket is sending infrared signals.
  • You can type any Cricket Logo instruction in the Cricket Logo Command Center, and it will be immediately transferred to the Cricket and executed.
  • ...3 more annotations...
  • the Cricket's green LED light goes on while the Cricket is executing commands.
  • You can "launch" a procedure directly from the Cricket by pressing the white button on the Cricket.
  • You can send information from the Motor/Sensor Cricket back to the computer using the send instruction.
York Jong

Retired Robots - The Ants - 0 views

www.ai.mit.edu/ants

ants mit robot

shared by York Jong on 03 Jun 07 - Cached
  • York Jong on 03 Jun 07
     
    The Ants are a community of cubic-inch microrobots at the MIT Artificial Intelligence Lab. There are two main goals for this project. The first is to push the limits of microrobotics by integrating many sensors and actuators into a small package. The second is to form a structured robotic community from the interactions of many simple individuals. The inspiration behind this idea comes from nature -- the ant colony.
York Jong

BEAM From the Ground Up - 0 views

bftgu.solarbotics.net/

5star beam electronics portal robot

shared by York Jong on 26 May 07 - Cached
  • York Jong on 26 May 07
     
    Welcome to the leaner, cleaner, BEAM From the Ground Up! This site is designed to be a useful collection of material for BEAM roboticists of all experience levels and abilities. The unifying focus here is on learning -- so this is the place to look for tu
York Jong

自製感應器 - 56 views

作者: Mick (大寶GO！GO！GO！) 看板: Robotics 標題: Re: 自製感應器 時間: Thu Nov 2 22:43:03 2006 ※ 引述《ykjiang (York)》之銘言： > 感應器是機器人很重要的一環，之前看過有利用包裝電子產品的 > 導電海綿壓縮後電阻會改變這一點，自製了感壓的 sensor 。 > 此外，很實用的機器鬍鬚，可感測障礙物： > Obs...

diy sensor

started by York Jong on 28 May 07 1 follow-up, last by York Jong on 28 May 07
York Jong

The Player Project - 37 views

作者: JJS0527 (小信信) 看板: Robotics 標題: The Player Project 時間: Mon Oct 30 00:20:41 2006 The Player Project http://playerstage.sourceforge.net/ The Player Project creates Free Software that enables res...

simulator

started by York Jong on 28 May 07 no follow-up yet
York Jong

軟體模擬機器人 - 32 views

作者: ykjiang (York) 看板: Robotics 標題: Re: 軟體模擬機器人 時間: Mon Jan 8 19:57:51 2007 剛剛發現 RobotDIY 有機器人軟體模擬的論壇： http://www.robotdiy.com/phpbb2/viewforum.php?f=14 還有一系列介紹文： http://www.robotdiy.com/topics....

simulator

started by York Jong on 28 May 07 1 follow-up, last by York Jong on 28 May 07
marketngedwisor

How to become Data Scientist in 2019? | edWisor - 0 views

blog.edwisor.com/...ecome-a-data-scientist-in-2019

scientist job demands data course role

shared by marketngedwisor on 03 Aug 19 - No Cached
  • marketngedwisor on 03 Aug 19
     
    Are you starting for your career as a data scientist? To become an expert in data science you need to begin from the ground up. And you need to get a step-by-step guide to becoming a data scientist and for learning a particular skill. Instead of jumping for a master program in computer science you need to focus mathematics, python,r-programming or statistics or develop a skill in data science. If you are looking out for such a learning institute then you could also take a walk for edwisor.com as it works for enrolled students in data science career program as well as in the hiring process and gets 4 Guaranteed interviews at top organizations.
David Corking

Tweenbots: Cute Beats Smart - O'Reilly Radar - April 2009 - Brady Forrest - 2 views

radar.oreilly.com/...weenbots-cute-beats-smart.html

Robots-hobby and consumer Humour

shared by David Corking on 12 Apr 09 - Cached
  • One man turned the robot back in the direction from which it had just come, saying out loud to the Tweenbot, "You can’t go that way, it’s toward the road.”
  • David Corking on 12 Apr 09
     
    I know its wrong, but this is giving me all kinds of evil ideas.
Astro Biology

Earth's magnetic field has flipped - 0 views

www.astrobio.net/...eld-flip-within-human-lifetime

news from nasa solar system planets in our

shared by Astro Biology on 20 Oct 14 - No Cached
  • Astro Biology on 20 Oct 14
     
    The new discovery indicates that the intensity of Earth's magnetic field is decreasing 10 times faster, leading some geophysicists to predict a reversal within a few thousand years.
  • Astro Biology on 20 Oct 14
     
    The new discovery indicates that the intensity of Earth's magnetic field is decreasing 10 times faster, leading some geophysicists to predict a reversal within a few thousand years.
Astro Biology

Latest News from Astrobiology Magazine - 0 views

www.pinterest.com/astrobiology

nasa news astrobiology space exploration planet solar system

shared by Astro Biology on 22 Sep 14 - No Cached
  • Astro Biology on 22 Sep 14
     
    Get latest NASA invention's pictures, discoveries, technologies, space exploration and other news only at Astrobiology Magazine. Join us on Pinterest to see current happenings in Universe.
  • Astro Biology on 22 Sep 14
     
    Get latest NASA invention's pictures, discoveries, technologies, space exploration and other news only at Astrobiology Magazine. Join us on Pinterest to see current happenings in Universe.
Astro Biology

Know How Origin of Earth's survived when Oxygen has Abundant - 0 views

www.astrobio.net/...life-know-now-date

earth atmosphere oxygen for life planet solar system news from nasa

shared by Astro Biology on 04 Nov 14 - No Cached
  • Astro Biology on 04 Nov 14
     
    We all are aware of the fact that billions of years ago, there was very little oxygen on Earth to breathe. Scientist of University of California at Riverside (UCR) have researched when in Earth's history oxygen may have abundant. Curious to know how origins of Earth survived?
  • Astro Biology on 04 Nov 14
     
    We all are aware of the fact that billions of years ago, there was very little oxygen on Earth to breathe. Scientist of University of California at Riverside (UCR) have researched when in Earth's history oxygen may have abundant. Curious to know how origins of Earth survived?
Astro Biology

Know More about Robotic Mars Mission - 0 views

www.astrobio.net/...living-land-final-frontier

mars mission robotic exploration solar system planets news from nasa

shared by Astro Biology on 06 Nov 14 - No Cached
  • Astro Biology on 06 Nov 14
     
    Do you know Robotic missions to Mars have revealed clues about the planet's atmosphere and surface composition? NASA is investing to find and use natural resources beyond Earth. Want to know more about Robotic Mars Mission.
  • Astro Biology on 06 Nov 14
     
    Do you know Robotic missions to Mars have revealed clues about the planet's atmosphere and surface composition? NASA is investing to find and use natural resources beyond Earth. Want to know more about Robotic Mars Mission.
1 - 20 of 55 Next › Last »
Showing 20▼ items per page