Circuit Documentation

Summary of the Circuit

This circuit is designed to control two DC motors using an L298N DC motor driver, which is interfaced with an Arduino UNO microcontroller. The circuit also includes a servomotor and an HC-SR04 ultrasonic sensor for distance measurement, as well as a QMC5883L magnetometer for detecting magnetic fields. The entire system is powered by a 12V battery. The Arduino UNO manages the logic and sensor data processing, while the L298N driver module controls the motor speeds and directions.

Component List

Arduino UNO

• Microcontroller board based on the ATmega328P
• Used for controlling the logic of the circuit and processing sensor data

L298N DC Motor Driver

• Dual H-Bridge motor driver
• Used for driving two DC motors with direction and speed control

Battery 12V

• Power source for the motor driver and motors

DC Motor (2x)

• Electric motors that convert electrical energy into mechanical motion
• Controlled by the L298N motor driver

Servomotor S05NF

• Rotary actuator that allows for precise control of angular position
• Powered and controlled by the Arduino UNO

HC-SR04 Ultrasonic Sensor

• Sensor that uses ultrasonic waves to measure distance
• Interfaced with the Arduino UNO for distance measurement

QMC5883L Magnetometer

• Sensor that measures the strength and direction of magnetic fields
• Connected to the Arduino UNO via I2C communication

Wiring Details

Arduino UNO

• 3.3V connected to QMC5883L Magnetometer VCC
• 5V connected to Servomotor S05NF VCC
• GND connected to QMC5883L Magnetometer GND and Servomotor S05NF GND
• SCL connected to QMC5883L Magnetometer SCL
• SDA connected to QMC5883L Magnetometer SDA
• D9 connected to Servomotor S05NF SIG
• D7 connected to L298N DC motor driver IN4
• D6 connected to L298N DC motor driver IN3
• D5 connected to L298N DC motor driver IN2
• D4 connected to L298N DC motor driver IN1
• D3 connected to L298N DC motor driver ENA
• D2 connected to L298N DC motor driver ENB

L298N DC Motor Driver

• 12V connected to Battery 12V positive terminal
• GND connected to Battery 12V negative terminal
• OUT1 connected to DC Motor 1 pin 2
• OUT2 connected to DC Motor 1 pin 1
• OUT3 connected to DC Motor 2 pin 2
• OUT4 connected to DC Motor 2 pin 1

Battery 12V

• + connected to L298N DC motor driver 12V
• - connected to L298N DC motor driver GND

DC Motor 1 & 2

• pin 1 connected to L298N DC motor driver OUT2 (Motor 1) and OUT4 (Motor 2)
• pin 2 connected to L298N DC motor driver OUT1 (Motor 1) and OUT3 (Motor 2)

Servomotor S05NF

• SIG connected to Arduino UNO D9
• VCC connected to Arduino UNO 5V
• GND connected to Arduino UNO GND

QMC5883L Magnetometer

• VCC connected to Arduino UNO 3.3V
• GND connected to Arduino UNO GND
• SCL connected to Arduino UNO SCL
• SDA connected to Arduino UNO SDA

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:

}

Note: The provided code is a template and does not contain any functional code. It needs to be populated with the logic for controlling the motors, reading sensor data, and any other required functionality.