Arduino - Servo.attach()
Description
Attach the Servo variable to a pin. Note that in Arduino 0016 and earlier, the Servo library supports only servos on only two pins: 9 and 10.
Syntax
servo.attach(pin)
servo.attach(pin, min, max)
Parameters
- servo: a variable of type Servo
- pin: the number of the pin that the servo is attached to
- min (optional): the pulse width, in microseconds, corresponding to the minimum (0-degree) angle on the servo (defaults to 544)
- max (optional): the pulse width, in microseconds, corresponding to the maximum (180-degree) angle on the servo (defaults to 2400)
Example
Hardware Required
| 1 | × | Official Arduino Uno | |
| 1 | × | Alternatively, DIYables STEM V3, Fully Compatible with Arduino Uno R3 | |
| 1 | × | USB 2.0 cable type A/B | |
| 1 | × | Servo Motor | |
| 1 | × | Jumper Wires |
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Additionally, some links direct to products from our own brand, DIYables .
Additionally, some links direct to products from our own brand, DIYables .
Buy Note: When using multiple servo motors, we recommend the PCA9685 16 Channel PWM Servo Driver Module to save MCU pins and make wiring easier.
Wiring Diagram
This image is created using Fritzing. Click to enlarge image
Arduino Code
#include <Servo.h>
Servo myservo;
void setup() {
myservo.attach(9);
}
void loop() {}
※ NOTES AND WARNINGS:
When calling Servo.attach() function, the servomotor rotates to the last value set by Servo.write() or Servo.writeMicroseconds() function, or 90 ° by default. Therefore, To position the servomotors at a certain position upon initialization, use Servo.write() or Servo.writeMicroseconds() function right before calling Servo.attach().
See Also
※ ARDUINO BUY RECOMMENDATION
| Arduino UNO R3 | |
| Arduino Starter Kit |