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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

Microprocessor of The Ants: Hardware - 0 views

www.ai.mit.edu/...microprocessor.html

ants mcu mit robot

shared by York Jong on 03 Jun 07 - Cached
  • This chip is great for building robots because it has extensive input/output hardware built right into the chip. This reduces the need for external components.
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 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.
  • 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 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.
  • 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
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

Intermediate Robot Building - 0 views

books.google.com/books

book choice electronics mechanics robot

shared by York Jong on 09 Sep 07 - Cached
  • This book provides far more detail on the hardware aspects of robot building than any other I have seen to date and is worth picking up.
  • "Intermediate Robot Building" offers the kind of real-world knowledge that only an experienced robot builder can offer--the kind of knowledge beginners usually have to learn through mistakes. In this book, you'll learn the value of a robot heartbeat and the purpose of the wavy lines in photocells.
  • York Jong on 09 Sep 07
     
    Intermediate Robot Building by David Cook covers all aspects of robot building, from mechanical, to electronics, to microcontroller selection.
York Jong

HomePage of GoGoBoard - 0 views

padthai.media.mit.edu/...home.xsp

diy gogo-board logo mit opensource robot

shared by York Jong on 09 Sep 07 - Cached
  • York Jong on 09 Sep 07
     
    The GoGo board framework is a collection of open-source hardware platforms mainly aimed for educational projects.
York Jong

Building Sensors and Motors for Handy Board - 0 views

www.handyboard.com/sensors

diy electronics hardware mit robot sensor solder wiring

shared by York Jong on 31 May 07 - Cached
  • York Jong on 31 May 07
     
    This document explains how to interface a variety of devices to the Handy Board:
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.
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