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Lesson 12
Servo Motor
Overview
In this lesson, you will master how to control a servo motor with the UNO
R3 or MEGA
2560
board.
Components
Required
Name
Qty
Name
Qty
UNO
R3 or MEGA
2560
1
DuPont Wire
3
Servo (SG90)
1
Component
Introduction
Servo motor is a kind of geared motor that can rotate
with a certain angle
according to the input pulse's frequency an duty cycle.
The input pulse frequency
and duty cycle should be in a certain range for proper operation.
A servo motor
can usually only turn 90° in either direction for a total of 180° movement. The
PWM signal can be sent to servo to
move the shaft to
the desired position.
Wiring Diagram
Result
After downloading the example,
the servo motor turn
left at 15˚ every
second, then come
back to initial position at the same speed. In next
loop, it will turn left at a higher
speed and
then come back.
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