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 Robot Journals  Robot Theory      - THE $50 ROBOT -       Step
by Step Robot Tutorial      In step 3 of the step-by-step robot
tutorial we will now build the brains (electronics systems) of
our robot. This step should take you about three to four hours
from start to completion.      There are three major electronic
systems for all robots, and you will build each of these in this
tutorial:      1) Power Regulation - this system ensures your
robot always gets enough power and the correct voltages to run
all other systems without interruption.      2) Microcontroller
- this is the actual brain of your robot. It is the device you
program, and controls all other systems of your robot. For your
robot, you will be using the AVR ATmega8 (the big black chip
with all the pins sticking out of it).      3) Sensors and
Actuators - for any control system you need both a sensor for
the robot to 'see