Circuit Documentation

Summary

This circuit integrates an Arduino Mega 2560 microcontroller with an HC-SR04 Ultrasonic Sensor and a 64x32 LED Matrix display. The Arduino Mega 2560 serves as the central processing unit, controlling the LED Matrix for visual output and interfacing with the HC-SR04 Ultrasonic Sensor for distance measurement. The circuit is designed to provide a visual representation of sensor readings and can be expanded for various applications such as distance monitoring systems.

Component List

Arduino Mega 2560

• Description: A microcontroller board based on the ATmega2560.
• Purpose: Acts as the central controller for the circuit, interfacing with the LED Matrix and the Ultrasonic Sensor.
• Pins: IOREF, RESET, 3V3, 5V, GND, VIN, Analog Pins (A0-A15), Digital Pins (D0-D53), PWM Pins, Communication Pins (TX, RX, SCL, SDA), AREF, and additional power pins.

LED Matrix 64x32

• Description: A 64x32 pixel LED display matrix for visual output.
• Purpose: Displays visual information as directed by the Arduino Mega 2560.
• Pins: R1, B1, R2, B2, A, C, CLK, OE, G1, GND, G2, B, D, LAT.

HC-SR04 Ultrasonic Sensor

• Description: An ultrasonic distance sensor capable of measuring distances by emitting ultrasonic waves.
• Purpose: Measures distances and provides feedback to the Arduino Mega 2560.
• Pins: VCC, TRIG, ECHO, GND.

Wiring Details

Arduino Mega 2560

• 5V to HC-SR04 Ultrasonic Sensor VCC
• GND to HC-SR04 Ultrasonic Sensor GND and LED Matrix GND
• A0 to LED Matrix A
• A1 to LED Matrix B
• A2 to LED Matrix C
• A3 to LED Matrix D
• D9 PWM to LED Matrix OE
• D10 PWM to LED Matrix LAT
• D11 PWM to LED Matrix CLK
• D12 PWM to HC-SR04 Ultrasonic Sensor TRIG
• D13 PWM to HC-SR04 Ultrasonic Sensor ECHO
• D28 to LED Matrix G2
• D26 to LED Matrix B1
• D24 to LED Matrix R1
• D29 to LED Matrix B2
• D27 to LED Matrix R2
• D25 to LED Matrix G1

LED Matrix 64x32

• R1, B1, R2, B2, A, C, CLK, OE, G1, G2, B, D, LAT connected to corresponding pins on the Arduino Mega 2560.
• Multiple GND pins connected to Arduino Mega 2560 GND.

HC-SR04 Ultrasonic Sensor

• VCC to Arduino Mega 2560 5V
• GND to Arduino Mega 2560 GND
• TRIG to Arduino Mega 2560 D12 PWM
• ECHO to Arduino Mega 2560 D13 PWM

Documented Code

Arduino Mega 2560 Code (sketch.ino)

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

Additional Notes

• The provided code is a template and does not contain any functional implementation. It needs to be populated with the logic for controlling the LED Matrix and reading data from the HC-SR04 Ultrasonic Sensor.
• The setup() function is intended for initialization code that runs once at the start, such as pin mode configurations.
• The loop() function is for code that runs continuously, which will include the main logic for sensor data acquisition and display updates.