Arduino uno User Manual

Here’s a picture of a servo motor connected to an Arduino using wires. You
can also use pin headers, but wires give you more flexibility.
Controlling servo motors is convenient, because you can set the motor’s shaft
to an angle between 0 and 180. With the following sketch, you can send a
degree value via the serial port and move the servo motor accordingly:
Motors/SerialServo/SerialServo.ino
#include <Servo.h>
Line 1
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const unsigned int MOTOR_PIN = 9;
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const unsigned int MOTOR_DELAY = 15;
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const unsigned int SERIAL_DELAY = 5;
5
const unsigned int BAUD_RATE = 9600;
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Servo servo;
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void setup() {
10
Serial.begin(BAUD_RATE);
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servo.attach(MOTOR_PIN);
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delay(MOTOR_DELAY);
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servo.write(1);
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delay(MOTOR_DELAY);
15
}
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Chapter 13. Controlling Motors with Arduino • 228
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Arduino uno Specifications

General

Form factor	Arduino
Certification	RoHS, FC, CE
Processor model	-
Processor frequency	- MHz
Microcontroller model	ATmega328
Microcontroller frequency	16 MHz
DC input voltage	7-12 V
Operating voltage	5 V
DC current per I/O pin	40 mA
Flash memory	0.032 MB
Maximum internal memory	- GB
SRAM (Static Random Access Memory)	2 KB
EEPROM (Electrically Erasable Programmable Read-Only Memory)	1 KB
Wi-Fi	No
Number of analog I/O pins	6
Number of digital I/O pins	14

Weight and Dimensions

Board dimensions	53.4 x 68.6 mm