Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an Arduino Leonardo microcontroller, an L298N DC motor driver, multiple TCRT-5000 IR sensors, a rocker switch, and DC Mini Metal Gear Motors. The circuit is designed to control the motors based on sensor inputs, with power supplied by a 7.4V battery.

Component List

Arduino Leonardo (Rev3b)

• Description: A microcontroller board based on the ATmega32u4.
• Pins: D0/RX, D1/TX, D2/SDA, D3 PWM/SCL, D4/A6, D5 PWM, D6 PWM/A7, D7, n.c., IOREF, RESET, 3V3, 5V, GND, VIN, A0, A1, A2, A3, A4, A5, D8/A8, D9 PWM/A9, D10 PWM/A10, D11 PWM, D12/A11, D13 PWM, AREF, SDA, SCL

L298N DC Motor Driver

• Description: A dual H-Bridge motor driver that allows 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

7.4V Battery

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

TCRT-5000 IR Sensor

• Description: An infrared sensor used for detecting objects.
• Pins: 5V, GND, D0, A0

Rocker Switch

• Description: A switch to control the power supply.
• Pins: output, input

DC Mini Metal Gear Motor

• Description: A small DC motor with metal gears.
• Pins: IN1, IN2

Wiring Details

Arduino Leonardo (Rev3b)

• 5V: Connected to 5V pins of all TCRT-5000 IR sensors and L298N DC motor driver.
• GND: Connected to GND pins of all TCRT-5000 IR sensors and L298N DC motor driver.
• D5 PWM: Connected to ENA pin of L298N DC motor driver.
• D6 PWM/A7: Connected to ENB pin of L298N DC motor driver.
• A1: Connected to A0 pin of TCRT-5000 IR sensor.
• A2: Connected to A0 pin of another TCRT-5000 IR sensor.
• A3: Connected to A0 pin of another TCRT-5000 IR sensor.
• A4: Connected to A0 pin of another TCRT-5000 IR sensor.
• A5: Connected to A0 pin of another TCRT-5000 IR sensor.
• D9 PWM/A9: Connected to IN4 pin of L298N DC motor driver.
• D10 PWM/A10: Connected to IN3 pin of L298N DC motor driver.
• D11 PWM: Connected to IN2 pin of L298N DC motor driver.
• D12/A11: Connected to IN1 pin of L298N DC motor driver.

L298N DC Motor Driver

• 5V: Connected to 5V pin of Arduino Leonardo and 5V pins of all TCRT-5000 IR sensors.
• GND: Connected to GND pin of Arduino Leonardo and GND pins of all TCRT-5000 IR sensors.
• ENA: Connected to D5 PWM pin of Arduino Leonardo.
• ENB: Connected to D6 PWM/A7 pin of Arduino Leonardo.
• IN1: Connected to D12/A11 pin of Arduino Leonardo.
• IN2: Connected to D11 PWM pin of Arduino Leonardo.
• IN3: Connected to D10 PWM/A10 pin of Arduino Leonardo.
• IN4: Connected to D9 PWM/A9 pin of Arduino Leonardo.
• OUT1: Connected to IN2 pin of one DC Mini Metal Gear Motor.
• OUT2: Connected to IN1 pin of the same DC Mini Metal Gear Motor.
• OUT3: Connected to IN1 pin of another DC Mini Metal Gear Motor.
• OUT4: Connected to IN2 pin of the same DC Mini Metal Gear Motor.
• 12V: Connected to input pin of rocker switch.

7.4V Battery

• +: Connected to output pin of rocker switch.
• -: Connected to GND pin of L298N DC motor driver.

TCRT-5000 IR Sensor

• 5V: Connected to 5V pin of Arduino Leonardo and L298N DC motor driver.
• GND: Connected to GND pin of Arduino Leonardo and L298N DC motor driver.
• A0: Connected to A1, A2, A3, A4, and A5 pins of Arduino Leonardo (one sensor per pin).

Rocker Switch

• input: Connected to 12V pin of L298N DC motor driver.
• output: Connected to + pin of 7.4V battery.

DC Mini Metal Gear Motor

• IN1: Connected to OUT2 pin of L298N DC motor driver (first motor) and OUT3 pin of L298N DC motor driver (second motor).
• IN2: Connected to OUT1 pin of L298N DC motor driver (first motor) and OUT4 pin of L298N DC motor driver (second motor).

Documented Code

Arduino Leonardo (Rev3b) Code

sketch.ino

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

}

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

}

documentation.txt