Arduino Mega LED Bar Graph Display

This project demonstrates how to create an LED bar graph display with an Arduino Mega. The bar graph consists of 10 LEDs that visually represent an analog sensor's value connected to A0. As the sensor value changes, the number of illuminated LEDs in the bar graph changes accordingly.

Components Needed

• Arduino Mega
• 10x LEDs
• 10x Resistors (appropriate values for your LEDs)
• Jumper Wires
• Breadboard
• Power Supply

Block Diagram

Circuit Setup

Connect LEDs to Arduino Mega:

Analog Sensor (e.g., Potentiometer):

Connect the sensor output to A0.

Instructions

Circuit Setup:

Connect the LEDs and the analog sensor as described in the circuit setup section.

Code Upload:

Open Arduino IDE and create a new sketch.

Copy and paste the provided Arduino code into the sketch.

Testing:

Upload the code to the Arduino Mega.

Observe the LED bar graph. As you vary the analog sensor (e.g., turn the potentiometer), the number of illuminated LEDs should change to reflect the sensor value.

Applications

Notes

Adjust the

Ensure each LED is properly connected with a current-limiting resistor to prevent damage to the LEDs and Arduino.