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Robotics, robots, NXT and challenges
Transcript of Robotics, robots, NXT and challenges
"Robotics is the branch of technology that deals with the design, construction, operation, structural disposition, manufacture and application of robots."
Robotics is related to the sciences of electronics, engineering, mechanics, and software.
What is a "Robot"?
"A robot is a virtual or mechanical artificial agent.
In practice, it is usually an electro-mechanical machine which is guided by computer or electronic programming, and is thus able to do tasks on its own.
Another common characteristic is that by its appearance or movements, a robot often conveys a sense that it has intent or agency of its own."
"of its own"...
"dirty, dull, dangerous..."
Dr. Zoltán Istenes
Eötvös Loránd University
Faculty of Informatics
LEGO Mindstorms NXT
light intensity sensor
ultrasound distance sensor
processor (48 MHz)
memory (64 + 256 KB)
LCD display, battery, buttons
motors (3) with rotation encoder feedback
"Computer on a chip"
processor (16 MHz),
memory (16 KB),
14 digital I/O,
6 analog I/O,
ZigBee, RC radio control,
infrared distance sensor,
ultrasound distance sensor,
robot arm (4DOF)
2x infra red distance sensor
interaction with the environment
2GB RAM, 80GB HDD
Programming the NXT robots
the programming interface
waiting for sensor value
sequence of "instructions"
selection (conditional execution)
How does the ultrasound sensor works?
speed of the sound: v=340m/s
echo returns in: t=1ms (1/1000 s)
what is the distance (d) of the object?
s= (340m/s) * (1/1000 s) = 340/1000 m = 0.34 m = 34 cm
d=s/2=34/2 cm= 17cm
"patrol" in "squares", turn direction if hand clap...
turn around and find if an object is closer than 0,5m then go there...
follow a black line...
Robotics, Robots, Programming