Best Electrical CADArduino-Servo Library
This article details the use of the Servo library in Arduino.
The servo motor is operated by a program using "Servo", a library for servo motor control.
For other Arduino functions and libraries, please refer to the following article.
Servo Library
| Functions | Parameters | Returns | Explanation |
|---|---|---|---|
| attach(int pin, int min, int max) | int pin: The pin number to attach int min: Pulse width(usec) at angle 0°, Defaults to 544 int max: Pulse width(usec) at angle 180°, Defaults to 2400 | Index value | Attach the Servo variable to the pin |
| bool attached(void) | None | Attached: true Not attached: false | Check whether the Servo variable is attached to the pin |
| void detach(void) | None | None | Detach the Servo variable from the pin |
| void write(int angle) | int angle: Specified angle | None | Rotate servo motor to specified angle |
| void writeMicroseconds(int uS) | int uS: Pulse width in usec | None | Rotate servo motor by specifying pulse width |
| int read(void) | None | Servo motor angle | Reads the current servo motor angle |
attach()/Attach the Servo variable to the pin
- Function: attach(int pin, int min, int max)
- Parameter: int pin⇒The pin number to attach
- : int min⇒Pulse width(usec) at angle 0°, Defaults to 544
- : int max⇒Pulse width(usec) at angle 180°, Defaults to 2400
- Return: Index value
The attach() function attaches a servomotor pin number as its parameter. You can also set the pulse width for angles 0° and 180° with the parameters min and max.
attached()/Check whether the Servo variable is attached to the pin
- Function: bool attached(void)
- Parameter: None
- Return: Attached⇒true/Not attached⇒false
The attached() function checks whether the servo motor pin number is attached by the attach() function. The return value is "true" if there is attachment and "false" if there is no attachment.
detach()/Detach the Servo variable from the pin
- Function: void detach(void)
- Parameter: None
- Return: None
The detach() function detaches the servo motor pins attached by the attach() function and returns them to the unattached state.
write()/Rotate servo motor to specified angle
- Function: void write(int angle)
- Parameter: int angle⇒Specified angle
- Return: None
The write() function rotates the servomotor up to the angle specified by the parameter.
writeMicroseconds()/Rotate servo motor by specifying pulse width
- Function: void writeMicroseconds(int uS)
- Parameter: int uS⇒Pulse width in usec
- Return: None
The writeMicroseconds() function rotates a servomotor by specifying a pulse width in the parameter. The angle at which the servomotor rotates is determined by the pulse width it receives.
read()/Reads the current servo motor angle
- Function: int read(void)
- Parameter: None
- Return: Servo motor angle
The read() function returns the current servo motor angle.
Sample Programs (Sample Sketches)
The servo motor is operated by a program using "Servo", a library for servo motor control.
