今天快速記錄下 SG90 伺服馬達的 arduino 程式碼。

PIN 腳位定義:

• 橘色：控制訊號
• 紅色：輸入電源 +(3~7.2V)
• 棕色：共同接地

規格:

• Weight: 9g
• Dimension: 23×12.2x29mm
• Stall torque: 1.8kg/cm(4.8v)
• Gear type: POM gear set
• Operating speed: 0.12 sec/60degree(4.8v)
• Operating voltage: 4.8v~7.2V
• Temperature range: 0℃_ 55℃
• Dead band width: 1us
• Power Supply: Through External Adapter
• servo wire length: 25 cm
• Servo Plug: JR (Fits JR and Futaba)
• 轉動角度：最大90°

範例程式：

#include    //載入函式庫，這是內建的，不用安裝

Servo myservo;  // 建立SERVO物件

void setup() {
  myservo.attach(9);  // 設定要將伺服馬達接到哪一個PIN腳
}

void loop() {   
  myservo.write(0);  //旋轉到0度，就是一般所說的歸零
  delay(1000);
  myservo.write(90); //旋轉到90度
  delay(1000);
  myservo.write(180); //旋轉到180度
  delay(1000);
  myservo.write(90);
  delay(1000);
}

/*
  Sweep

  by BARRAGAN 
  This example code is in the public domain.

  modified 8 Nov 2013  by Scott Fitzgerald
  http://www.arduino.cc/en/Tutorial/Sweep
*/

#include 

int pos = 0;

Servo servo_9;

void setup()
{
  servo_9.attach(9, 500, 2500);

}

void loop()
{
  // sweep the servo from 0 to 180 degrees in steps
  // of 1 degrees
  for (pos = 0; pos <= 180; pos += 1) {
    // tell servo to go to position in variable 'pos'
    servo_9.write(pos);
    // wait 15 ms for servo to reach the position
    delay(15); // Wait for 15 millisecond(s)
  }
  for (pos = 180; pos >= 0; pos -= 1) {
    // tell servo to go to position in variable 'pos'
    servo_9.write(pos);
    // wait 15 ms for servo to reach the position
    delay(15); // Wait for 15 millisecond(s)
  }
}

參考

• 傑森創工 – [Arduino範例] SG90 Servo伺服馬達

• Tinkercad 的模擬程式