Writes a value in microseconds (uS) to the servo, controlling the shaft accordingly. On a standard servo, this will set the angle of the shaft. On standard servos a parameter value of 1000 is fully counter-clockwise, 2000 is fully clockwise, and 1500 is in the middle.

Note that some manufactures do not follow this standard very closely so that servos often respond to values between 700 and 2300. Feel free to increase these endpoints until the servo no longer continues to increase its range. Note however that attempting to drive a servo past its endpoints (often indicated by a growling sound) is a high-current state and should be avoided.

Continuous-rotation servos will respond to the writeMicrosecond() function in an analogous manner to the write function.


Servo myservo;



  • servo: a variable of type Servo
  • uS: the value of the parameter in microseconds (int)


#include <Servo.h> 
Servo myservo;
void setup() 
  myservo.writeMicroseconds(1500);  // set servo to mid-point
void loop() {} 

See also

Libraries Reference Home

The text of the 86Duino reference is a modification of the Arduino reference and is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.

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