## Introduction: Servo Motor + Potentiometer + Arduino: Potentiometer-Controlled Servo

Hello World!

I'm Unicorn Clockworks, here with another project. Today, we will be controlling a servo motor's angle using a potentiometer knob, where the angle of the servo motor corresponds to the rotational displacement of the potentiometer with a linear correlation.

## Step 1: Materials

• Arduino or Arduino-compatible microcontroller
• Servo Motor
• Potentiometer
• Jumper Wires

## Step 2: Potentiometer Connections

1a
• Connect the Grey wire from the VCC pin of the potentiometer (pin 1) to the 3.3V pin on the Arduino.
• Connect the Green wire from the signal wire of the potentiometer (pin 2) to pin A0 on the Arduino.
• Connect the Purple wire from the ground wire of the potentiometer (pin 3) to the GND pin on the Arduino

## Step 3: Servo Connections

2a
• Connect the Blue wire from the signal pin of the servo motor (orange-coloured wire) to pin 3 on the Arduino
• Connect the Red wire from the VCC pin of the servo motor (red-coloured wire) to the 5V pin on the Arduino
• Connect the Black wire from the ground pin of the servo motor (black-coloured wire) to the GND pin on the Arduino

## Step 4: Code

`//include the servo library#include   <Servo.h>`
```//create a servo object
Servo servo1;  ```
```// declare the pins to which the servo and potentiometer is connected.
const int servoPin = 3;
const int pot = 0;
int potValue;```
```void setup() {
//associate servo1 to pin 9 on the Arduino 101
servo1.attach(servoPin);
```
`}`
```void loop() {
// put your main code here, to run repeatedly:
```    // linearly scale the value of the sevo output from the 0 to 1023 range of the potentiometer
// to the angle limits by the servo which is 0 to 180 degrees
potValue = map(potValue, 0, 1023, 0, 180);```
```    // record the now-adjusted value of the potentiometer to the servo motor
servo1.write(potValue);```
`}`

## Step 5: It Works!

Turn the knob of the potentiometer and watch the servo motor move along with it.

Enjoy your build and have fun!

Unicorn ClockWorks Out!