NavBot

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NavBot

• By
• Kosala Kodikara

2
Description

• The robot I propose to build is a Navigating
  robot. The robot will go around a room, mapping
  its dimension as well as any object in it. The
  robot will also be able to take user instructions
  as well as send user information. The user will
  take in this information and will build a map for
  the robot. Then the user will be able to give
  more instructions to the robot as where to map
  and where to go more accurately.

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Hardware

• I am going to use the MAVRIC II board. The MAVRIC
  II board has an ATMEL Atmega 128 16 MHz 8-bit
  RISC chip. I will use a C as my software
  development language. Also, I will use the WinAVR
  software development environment.

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Sensors

• The Robot will have six sensors. It will have
  three IR sensors, two shaft encoder sensors,
  three bump switch sensors, one compass and one
  transceiver.
• At the base station, the user will communicate
  with the Robot using a custom made USB or
  parallel port transceiver

5
Platform

• The robot plat form will consist of either two
  servo driven standard wheels or two servo driven
  unidirectional wheels at the back and one
  unidirectional wheel at the front.

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Behavior

• The robot will start out in a random or in a user
  given direction. When it encounters an obstacle
  it will try to map its 2D dimension. While it is
  mapping all its information is sent to the user
  base station. The base station will keep track of
  the whereabouts of the Robot as well as build a
  map for it. Using this map the robot can now map
  areas where it has not gone.

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Functions

• The robot has four main functions to know where
  it is heading, how far it is from an object, how
  far it has traveled in the given direction,
  communicate with the base station. It also
  figures out when it has bumped into an object and
  when it has reached the edge of a floor.