What components do I need for the Servo Sweeper Bot project?

For the Servo Sweeper Bot project, you need: 1x Arduino Uno R3 (5V), 1x SG90 Servo Motor (0???180??, 5V), 1x Breadboard + Wires (Half-size), 1x USB Cable (Type A to B).

How do I build an Servo Sweeper Bot with Arduino?

Make a servo motor sweep back and forth like a radar scanner using the Servo library. Follow these 4 steps: Step 1: Connect the Servo. Step 2: Upload the Code. Step 3: Watch It Sweep. Step 4: Control with a Potentiometer.

How long does the Servo Sweeper Bot project take?

The Servo Sweeper Bot Arduino project typically takes 30–60 minutes to complete, including wiring and uploading the code. It is rated as a Basic-level project, suitable for beginners with no prior electronics experience.

Is the Servo Sweeper Bot Arduino code free to use?

Yes. All Arduino code on Volt X, including the Servo Sweeper Bot sketch, is completely free to use, copy, and modify for personal or educational projects.

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Basic . Project #07

🤖 Servo Sweeper Bot

Make a servo motor sweep back and forth like a radar scanner using the Servo library.

📋 Overview

Servo motors are precision actuators that rotate to exact angles. The Arduino Servo library makes them simple to control — just tell it what angle you want (0–180°) and it goes there.

What you'll learn: Servo library, attach(), write(), angle control, and PWM signals.

Estimated time: 20–30 minutes. Difficulty: ⭐ Beginner-friendly.

🧩 Components Needed

Component	Specification	Qty	Notes
Arduino Uno R3	5V	1
SG90 Servo Motor	0???180??, 5V	1	Or MG90S for more torque
Breadboard + Wires	Half-size	1
USB Cable	Type A to B	1

📖 Step-by-Step Tutorial

Connect the Servo

Servo has 3 wires: Brown/Black -> GND, Red -> 5V, Orange/Yellow -> pin 9.

Upload the Code

The Servo library is built into Arduino IDE. No installation needed.

Watch It Sweep

The servo will sweep from 0?? to 180?? and back continuously.

Control with a Potentiometer

Replace the auto-sweep with analogRead(A0) mapped to 0???180 to control angle manually.

💡

Powering a servo directly from the Arduino 5V pin is fine for SG90 (light load). For stronger servos, use an external 5V supply to avoid browning out the Arduino.

💻 Arduino Code

servo_sweeper.ino

INO

// Servo Sweeper — Volt X
#include <Servo.h>

Servo myServo;
int angle = 0;
int step = 2;

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

void loop() {
  myServo.write(angle);
  delay(20);

  angle += step;
  if (angle >= 180 || angle <= 0) {
    step = -step; // Reverse direction
  }
}

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