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Driving a Servo Motor — SIK Circuit 8
Ed

Oluşturan

Ed

17. Mart 2026FI
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Driving a Servo Motor — SIK Circuit 8

Control a servo motor to sweep through positions. Learn about the Servo library, include directives, and how to precisely control motor position from 0 to 180 degrees.

Talimatlar

1

Parts & Introduction

A servo motor can be precisely positioned between 0 and 180 degrees. Unlike a regular motor that just spins, servos hold their position — making them perfect for robotics, pan/tilt mechanisms, and control surfaces. This experiment introduces the Servo library.

Parts Needed

  • 1x Arduino Uno + USB cable
  • 1x Breadboard
  • 1x Servo Motor (with 3-pin header)
  • 8x Jumper Wires

The servo has three wires: Red (power), Black (ground), White (signal).

Bu adım için malzemeler:

SparkFun Inventors Kit - V3.2SparkFun Inventors Kit - V3.21 kit
Arduino Uno R3Arduino Uno R31 adet
BreadboardBreadboard1 adet
Servo MotorServo Motor1 adet
Jumper WiresJumper Wires3 adet

Gerekli aletler:

Computer with Arduino IDE
2

Hardware Hookup

Wiring Instructions

  1. Connect 3 jumper wires to the servo's female 3-pin header for breadboarding.
  2. Connect the Red wire to 5V.
  3. Connect the Black wire to GND.
  4. Connect the White wire (signal) to Digital Pin 9.

Power Note: Servos draw significant current. If the servo twitches and the Arduino resets, use a wall adapter instead of USB power, or power the servo from a separate 5V supply.

Bu adım için malzemeler:

Servo MotorServo Motor1 adet
Jumper WiresJumper Wires3 adet
3

Arduino Code

Open the Arduino IDE and upload the following sketch to your Arduino board.

servo_motor.inoarduino
/*
SparkFun Inventor's Kit
Example sketch 08 — SINGLE SERVO

Sweep a servo back and forth through its full range of motion.

Hardware connections:
  Servo RED wire (power) to 5V
  Servo WHITE wire (signal) to digital pin 9
  Servo BLACK wire (ground) to GND

This code is completely free for any use.
*/

#include <Servo.h>

Servo servo1;

void setup()
{
  servo1.attach(9);
}

void loop()
{
  int position;

  // Quick moves to specific positions
  servo1.write(90);    // Go to 90 degrees
  delay(1000);
  servo1.write(180);   // Go to 180 degrees
  delay(1000);
  servo1.write(0);     // Go to 0 degrees
  delay(1000);

  // Slow sweep to 180 degrees (2-degree steps)
  for(position = 0; position < 180; position += 2)
  {
    servo1.write(position);
    delay(20);
  }

  // Slow sweep back to 0 degrees (1-degree steps)
  for(position = 180; position >= 0; position -= 1)
  {
    servo1.write(position);
    delay(20);
  }
}

Bu adım için malzemeler:

Arduino Uno R3Arduino Uno R31 adet

Gerekli aletler:

Computer with Arduino IDE
4

Test & Experiment

What You Should See

The servo quickly moves to 90°, 180°, and 0° (1 second each), then slowly sweeps from 0° to 180° and back.

Troubleshooting

  • Servo not moving: Even with colored wires, it's easy to plug a servo in backwards. Check connections.
  • Twitching/resetting: The servo draws too much power from USB. Use a wall adapter or separate power supply.

Experiments to Try

  • Add a potentiometer (from Circuit 2) to control servo position with a knob.
  • Change the step size and delay to experiment with speed and smoothness.
  • Build a simple pan/tilt mechanism with two servos.

Malzemeler

5

Gerekli Aletler

1
  • 13
    Computer with Arduino IDE
Tahmini toplam
$145.00

You can swap these in

Can't get one of the materials? Swap it for an equivalent — these work just as well.

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CC0 Kamu Malı

Bu plan CC0 lisansıyla yayınlanmıştır. İzin almadan kopyalayabilir, değiştirebilir, dağıtabilir ve herhangi bir amaçla kullanabilirsiniz.

Planı üzerinden ürün satın alarak Maker'ı destekleyin, böylece Maker Komisyonu Satıcılar tarafından belirlenen komisyonu kazanırlar veya bu Planın yeni bir versiyonunu oluşturun ve gelir paylaşımı için kendi Planınıza bağlantı olarak ekleyin.

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