Potentiometer Variable Resistor

The Potentiometer Variable Resistor project demonstrates how to use an Arduino Nano to read analog input from a potentiometer (variable resistor) and map the analog values to a desired range. Potentiometers are widely used in electronics to provide variable resistance and are commonly found in volume controls, dimmer switches, and other user interface elements.

Components Needed

• Arduino Nano
• Potentiometer
• Jumper Wires

Circuit Diagram

Circuit Setup

1.Connect Potentiometer to Arduino Nano:

Connect one end of the potentiometer to 5V on the Arduino Nano.

Connect the other end of the potentiometer to GND on the Arduino Nano.

Connect the wiper (middle pin) of the potentiometer to analog pin A0 on the Arduino Nano.

Instructions

1.Circuit Setup:

Wire the potentiometer to the Arduino Nano as described in the circuit setup section.

2.Code Upload:

Open the Arduino IDE and paste the provided code.

Upload the code to the Arduino Nano.

3.Testing:

Once the code is uploaded, open the serial monitor.

The serial monitor will display the mapped potentiometer value, which corresponds to the position of the potentiometer knob.

Applications

Analog Input Control: Use potentiometers to control parameters such as volume, brightness, and speed in various electronic projects.

User Interface: Implement potentiometers as user interface elements for adjusting settings and parameters in devices.

Analog Sensor Interface: Convert analog sensor inputs to digital values suitable for processing by microcontrollers.

Notes

Adjust the delay in the code to control the rate at which the potentiometer value is read and displayed.

Experiment with different mapping ranges to suit the specific requirements of your project.

Potentiometers can be combined with other components like LEDs, motors, and displays to create interactive and responsive systems.