Download Tutorial 2 - Controller, Sensors and Motors

Tutorial 1, UGB 230N
Controller, Sensors and Motors
Ding Ke
2009-10-12
How to control your robot?

For Vex, we have two ways,
–
–
Remote Control
Programming Logic
Controller
The Vex Controller
The Vex Controller Board
The Vex Controller is the brain of the
Robot. All of your inputs and outputs
go through this controller.
Remote Control
Remote Control
Signal Reception
The vex RF Receiver Module allow the robot to
receive transmitted signals. Reception begins
when a radio signal reaches the receiver’s antenna.
Remote Control


The Vex Micro Controller coordinates the
flow of information and power on the robot.
All other electronic system components must
be connected to the Micro Controller in order
to function.
Control Configurations
Programming Logic

Easy C
–
–
Easy C is a programming language that you will
use to tell your robot what to do.
In Easy C, programs are written using icon-based
code, but the interface includes a window that
displays the program in a text-based format as
well.
Sensors

Why does a robot need sensors?
–
–
–
The controller need additional information in order
to make right decisions
The sensors are used to get these information.
There are different kinds of sensors, for example,
touch sensors, light sensors, line follower
sensors, optical shaft encoder, ultrasonic sensors
What makes a machine a robot?
Sensing
information
about the
environment
where
is the
truck?
where should I dig?
Planning
Acting
action
on the
environment
Touch sensors
a simple
switch
electrical flow
force
voltage
measurement
Sensors defined

Sensors convert physical phenomena into
readable electric signals.

Also known as “transducers.”
Vex Sensors

Bumper switch sensor

Limit switch sensor
Application
Motors

Motors get their power from the batteries.

motors convert electrical energy into
mechanical energy

Connected to the controller.
Vex Motors

Motor
spinning either forward or backward at a
controlled speed.

Servo Motor
Can be directed to turn to face a specific
direction, rather than just spin forward or
backward.
Application