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Astro Biology

Latest News from Astrobiology Magazine - 0 views

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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.
York Jong

The Playful World: How Technology Is Transforming Our Imagination - 0 views

books.google.com/books

book choice education robot toy

shared by York Jong on 09 Sep 07 - Cached
  • York Jong on 09 Sep 07
     
    A trenchant analysis of the new "gaming" technology introduces readers to the interactive toys that will soon influence an entire generation of young users.
David Corking

BBC NEWS | Technology | Tweeting mouse trap and window | June 2009 - 0 views

news.bbc.co.uk/...8113914.stm

Gnome Linux twitter hampshire wiltshire

shared by David Corking on 03 Sep 09 - Cached
  • David Corking on 03 Sep 09
     
    'The house that tweets' This 2 minute video interview with Andy Stanford-Clark is much more entertaining than the YouTube interview I bookmarked earlier. Lots of action shots of home telemetry, Andy's Java midlet on his phone, and what I think is a GNOME desktop showing his home's web interface.
pooja_mnm

Simulators Market by Type Full Mission, Containerized, Fixed-Based, Desktop, Console - ... - 0 views

www.marketsandmarkets.com/...imulator-market-110549963.html

Simulators Market

shared by pooja_mnm on 21 Feb 18 - No Cached
  • pooja_mnm on 21 Feb 18
     
    The report analyzes the simulators market on the basis of type (full mission simulators, flight training devices, full flight simulators, fixed-based simulators, containerized simulators, desktop simulators, console simulators, and others), technology (live simulation, virtual simulation, constructive simulation, gaming simulation, and integrated training environment), application (military, commercial), vehicle class (airborne, land, naval), component (hardware, software).
York Jong

BEAM Pieces -- Integrated circuits - 0 views

library.solarbotics.net/...parts_elect_ic.html

5star beam collection electronics ic motor robot solar survey

shared by York Jong on 27 May 07 - Cached
  • 1381s are CMOS voltage-controlled triggers -- these "gate" a source until the voltage is above some "trip" limit, at which point it is allowed onto a third pin
  • We use them as 3- or 5-volt triggers
  • This chip is often considered the heart of Nv net technology
  • ...22 more annotations...
  • The '240 is often called "the bicore chip," because we can take advantage of the 240's inverters to turn a single 74*240 into a bicore
  • The '240 also has tri-state outputs, so an enable line can be used to turn its outputs on and off simply (good for adding reversing capability to a 'bot).
  • any *cores built with a 74*04 will require additional logic "downstream" to amplify the current to levels sufficient to drive a moto
  • Schmitt triggers can't easily be used in suspended bicore implementations
  • use its buffers as little current amplifiers
  • it is usable for either grounded or suspended bicore designs (but better for suspended)
  • 74HC/HCTxx non-buffers (74HC14 or 74HC04) draw about half of the current consumption, and have about half the drive current compared to HC / HCT buffer chips (74HC240 or 74HC245). Non-buffer chips are thus better for oscillators, say Nv and Nu applications; they are not suited for use in driving motors.
  • 74AC is best suited for motor driver applications with all inputs driven rail to rail.
  • The '245 is an octal buffer chip, and so has 8 channels of buffering power available for our misuse. This chip was designed for data transmission uses, but we'll misuse it as a motor driver chip
  • The '244 provides us with 8 (thus the "octal") buffers, enableable in banks of 4. This is a very useful chip for amplifying small currents
  • it can drive up to 4 motors in 2 directions each, or you can "buddy up" inputs and outputs to drive fewer motors at higher current
  • it can drive up to 4 motors in 2 directions each, or you can "buddy up" inputs and outputs to drive fewer motors at higher current
  • If you can't find 1381s locally, you might have better luck finding its European cousin, the TC-54 -- for details on it
  • Note that if you need more than about 200 mA per motor, you'll need to use an H-bridge, or some similar motor driver
  • The ideal BEAM circuit would use a low (2V-3V) voltage core and sensors combined with level shifting high (5-6V) volt motor drivers to maximize efficiency.
  • 74ACxxx used in typical BEAM applications uses 4x more supply current than does 74HC/HCTxxx.
  • York Jong on 27 May 07
     
    The following material is intended to cover usage and part selection details of ICs you're most likely to see in BEAM robots.
York Jong

Introduction to Autonomous Mobile Robots - 0 views

www.amazon.com/...104-5150301-5775106

autonomous book mobile robot

shared by York Jong on 31 May 07 - Cached
  • York Jong on 31 May 07
     
    Mobile robots range from the teleoperated Sojourner on the Mars Pathfinder mission to cleaning robots in the Paris Metro. Introduction to Autonomous Mobile Robots offers students and other interested readers an overview of the technology of mobility -- th
York Jong

[News] Superbot：可任意變形的模組化機器人 - 47 views

作者: mybigfish (ghoti) 看板: News 標題: [News] Superbot：可任意變形的模組化機器人 時間: Sun Feb 25 16:08:05 2007 Superbot：可任意變形的模組化機器人 Modular robot's wriggles show greater flexibility http://www.newscientisttech.com...

news

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

Agriculture Robots is Trending - 0 views

bit.ly/2nXVvw3

robot agriculture robotics technology

shared by clarktom on 18 Oct 19 - No Cached
  • clarktom on 18 Oct 19
     
    The growing concentration on the effectiveness of the ranch and the production, growing international demand for nourishment are roughly the important motivators for the progress of the agricultural robots.
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