Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an Arduino Nano microcontroller, an L298N DC motor driver, two IR sensors, a 7.4V battery, and two motor and wheel assemblies. The circuit is designed to control the motors based on input from the IR sensors.

Component List

Arduino Nano

• Description: A small, complete, and breadboard-friendly board based on the ATmega328P.
• Pins: D1/TX, D0/RX, RESET, GND, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11/MOSI, D12/MISO, VIN, 5V, A7, A6, A5, A4, A3, A2, A1, A0, AREF, 3V3, D13/SCK

L298N DC Motor Driver

• Description: A dual H-Bridge motor driver that allows speed and direction control of two 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

IR Sensor (Sensor 1)

• Description: An infrared sensor used for obstacle detection.
• Pins: out, gnd, vcc

IR Sensor (Sensor 2)

• Description: An infrared sensor used for obstacle detection.
• Pins: out, gnd, vcc

7.4V Battery

• Description: A power source for the circuit.
• Pins: +, -

Motor and Wheels (Motor 1)

• Description: A DC motor with attached wheels.
• Pins: vcc, GND

Motor and Wheels (Motor 2)

• Description: A DC motor with attached wheels.
• Pins: vcc, GND

Wiring Details

Arduino Nano

• D2: Connected to out of IR Sensor 1
• D3: Connected to out of IR Sensor 2
• D9: Connected to IN1 of L298N DC Motor Driver
• D10: Connected to IN2 of L298N DC Motor Driver
• D11/MOSI: Connected to IN3 of L298N DC Motor Driver
• D12/MISO: Connected to IN4 of L298N DC Motor Driver
• VIN: Connected to 5V of L298N DC Motor Driver
• GND: Connected to gnd of IR Sensor 1, GND of L298N DC Motor Driver, gnd of IR Sensor 2, and - of 7.4V Battery
• 5V: Connected to vcc of IR Sensor 1 and vcc of IR Sensor 2

L298N DC Motor Driver

• OUT1: Connected to GND of Motor 1
• OUT2: Connected to vcc of Motor 1
• OUT3: Connected to vcc of Motor 2
• OUT4: Connected to GND of Motor 2
• 12V: Connected to + of 7.4V Battery
• ENA: Connected to +5V-J1
• ENB: Connected to +5V-J2

IR Sensor 1

• out: Connected to D2 of Arduino Nano
• gnd: Connected to GND of Arduino Nano
• vcc: Connected to 5V of Arduino Nano

IR Sensor 2

• out: Connected to D3 of Arduino Nano
• gnd: Connected to GND of Arduino Nano
• vcc: Connected to 5V of Arduino Nano

7.4V Battery

• +: Connected to 12V of L298N DC Motor Driver
• -: Connected to GND of Arduino Nano

Motor and Wheels (Motor 1)

• GND: Connected to OUT1 of L298N DC Motor Driver
• vcc: Connected to OUT2 of L298N DC Motor Driver

Motor and Wheels (Motor 2)

• vcc: Connected to OUT3 of L298N DC Motor Driver
• GND: Connected to OUT4 of L298N DC Motor Driver

Documented Code

Arduino Nano Code (sketch.ino)

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

}

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

}

Additional Documentation (documentation.txt)