Project 6# Controlling brightness with a potentiometer using Arduino!

Описание: 🔴 Control LED brightness with a potentiometer using Arduino!
Learn analog input, the map() function, and Serial Monitor debugging in this beginner-friendly tutorial.
Project #6 of the Complete Arduino Series.

🎯 WHAT YOU'LL LEARN

Reading analog input (analogRead)

Analog vs digital signals

How a potentiometer works

Using map() to convert 0–1023 → 0–255

PWM LED brightness control

Serial Monitor debugging

Real-time control systems

🔧 COMPONENTS

Arduino Uno R3

USB Cable

LED (5mm) + 220Ω resistor

10kΩ potentiometer

Breadboard

Jumper wires


💻 DOWNLOAD CODE
Google Drive links here:

https://drive.google.com/file/d/17e0J...

💻 DOWNLOAD CIRCUIT DIAGRAM
Google Drive links here:

https://drive.google.com/file/d/1qKnF...

🔌 CIRCUIT SUMMARY

LED:
Pin 9 → 220Ω → LED(+)
LED(−) → GND

Potentiometer:
Left → 5V
Middle → A0
Right → GND

⚠️ NOTES

LED long leg = +

Use PWM pins (~)

Pot middle pin must go to A0

All grounds must be shared

❓ TROUBLESHOOTING

LED off → check polarity, resistor, PWM pin

LED not changing → pot wiring wrong

Flicker → loose wires

Serial blank/gibberish → wrong baud rate (use 9600)

🎯 CHALLENGE
Add a second potentiometer on A1 to control blink speed while A0 controls brightness.

🔥 EXPERIMENT IDEAS

Reverse brightness

Limit min/max brightness

Non-linear curves

Multi-LED control

RGB LED fading