Circuit Documentation

Summary

This document provides a detailed overview of a circuit designed to interface various sensors, actuators, and LEDs with an Arduino UNO microcontroller. The circuit includes a motor driver for controlling a DC gearmotor, a servo motor, an ultrasonic sensor, IR sensor, reflectance sensor arrays, and multiple LEDs with current-limiting resistors. A 9V battery powers the circuit, and the Arduino UNO is used to control and interface with all components.

Component List

Reflectance Sensor Array (5 pin)

• Description: A sensor array used to detect reflectance with 5 sensing elements.
• Pins: LEDON, 5, 4, 3, 2, 1, GND, VCC

Reflectance Sensor Array (9 pin)

• Description: A sensor array with 9 sensing elements for detecting reflectance.
• Pins: ON, GND, 1, 2, 3, 4, VCC, 5, 6, 7, 8, 9

9V Battery

• Description: Provides power to the circuit.
• Pins: -, +

L298N DC Motor Driver

• Description: A module for controlling DC motors.
• Pins: OUT1, OUT2, 12V, GND, 5V, OUT3, OUT4, 5V-ENA-JMP-I, 5V-ENA-JMP-O, +5V-J1, +5V-J2, ENA, IN1, IN2, IN3, IN4, ENB

Gearmotor DC / Motorreductor

• Description: A DC gearmotor for providing mechanical motion.
• Pins: Pin1, Pin2

Servo

• Description: A servo motor for precise angular positioning.
• Pins: GND, VCC, PWM

HC-SR04 Ultrasonic Sensor

• Description: An ultrasonic sensor for distance measurement.
• Pins: VCC, TRIG, ECHO, GND

LED: Two Pin (red, green, yellow)

• Description: Light Emitting Diodes of different colors for indication.
• Pins: cathode, anode

Arduino UNO

• Description: A microcontroller board based on the ATmega328P.
• Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0-A5, SCL, SDA, AREF, D0-D13

Resistor (220 Ohms)

• Description: Current-limiting resistors for LEDs.
• Pins: pin1, pin2

IR Sensor

• Description: An infrared sensor for detecting proximity or object presence.
• Pins: out, gnd, vcc

Wiring Details

Reflectance Sensor Array (5 pin)

• LEDON: Connected to Arduino UNO D6
• 5: Connected to Arduino UNO A5
• 4: Connected to Arduino UNO A4
• 3: Connected to Arduino UNO A3
• 2: Connected to Arduino UNO A2
• 1: Connected to Arduino UNO A1
• GND: Connected to common ground
• VCC: Connected to L298N DC motor driver 5V

Reflectance Sensor Array (9 pin)

• Not connected in the current configuration.

9V Battery

• -: Connected to common ground
• +: Connected to L298N DC motor driver 12V

L298N DC Motor Driver

• OUT1: Connected to Gearmotor DC Pin2
• OUT2: Connected to Gearmotor DC Pin1
• 12V: Connected to 9V Battery +
• GND: Connected to common ground
• 5V: Power supply for other components
• ENA: Connected to Arduino UNO D10
• IN1: Connected to Arduino UNO D9
• IN2: Connected to Arduino UNO D8

Gearmotor DC / Motorreductor

• Pin1: Connected to L298N DC motor driver OUT2
• Pin2: Connected to L298N DC motor driver OUT1

Servo

• GND: Connected to common ground
• VCC: Connected to L298N DC motor driver 5V
• PWM: Connected to Arduino UNO D7

HC-SR04 Ultrasonic Sensor

• VCC: Connected to L298N DC motor driver 5V
• TRIG: Connected to Arduino UNO D5
• ECHO: Connected to Arduino UNO D4
• GND: Connected to common ground

LED: Two Pin (red, green, yellow)

• Red LED cathode: Connected to common ground, anode: Connected to Resistor (220 Ohms) pin1
• Green LED cathode: Connected to common ground, anode: Connected to Resistor (220 Ohms) pin1
• Yellow LED cathode: Connected to common ground, anode: Connected to Resistor (220 Ohms) pin1

Arduino UNO

• D11: Connected to Resistor (220 Ohms) pin2 (Red LED)
• D12: Connected to Resistor (220 Ohms) pin2 (Green LED)
• D13: Connected to Resistor (220 Ohms) pin2 (Yellow LED)
• GND: Connected to common ground
• A0: Connected to IR Sensor out
• A1-A5: Connected to Reflectance Sensor Array (5 pin) pins 1-5
• D10: Connected to L298N DC motor driver ENA
• D9: Connected to L298N DC motor driver IN1
• D8: Connected to L298N DC motor driver IN2
• D7: Connected to Servo PWM
• D6: Connected to Reflectance Sensor Array (5 pin) LEDON
• D5: Connected to HC-SR04 Ultrasonic Sensor TRIG
• D4: Connected to HC-SR04 Ultrasonic Sensor ECHO

Resistor (220 Ohms)

• Red LED: pin1 connected to LED anode, pin2 connected to Arduino UNO D11
• Green LED: pin1 connected to LED anode, pin2 connected to Arduino UNO D12
• Yellow LED: pin1 connected to LED anode, pin2 connected to Arduino UNO D13

IR Sensor

• out: Connected to Arduino UNO A0
• gnd: Connected to common ground
• vcc: Connected to L298N DC motor driver 5V

Documented Code

Arduino UNO 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 code provided is a template and does not contain any functional code to control the circuit components.
• The user must implement the setup and loop functions to initialize the pins and define the behavior of the circuit.
• The IR sensor, ultrasonic sensor, motor driver, and LEDs are interfaced with the Arduino UNO and can be controlled via the corresponding pins as detailed in the wiring section.