Circuit Documentation

Summary

This circuit is designed to control a DC motor using an Arduino UNO microcontroller and an L298N DC motor driver. It also includes an ultrasonic sensor for distance measurement and two IR sensors for object detection. The circuit is powered by a 12V battery, which also supplies power to the motor driver. The Arduino UNO manages the inputs and outputs, interfacing with the sensors and controlling the motor driver.

Component List

Arduino UNO

• Microcontroller board based on the ATmega328P
• It has 14 digital input/output pins, 6 analog inputs, a 16 MHz quartz crystal, a USB connection, a power jack, an ICSP header, and a reset button.

L298N DC Motor Driver

• A motor driver module capable of driving two DC motors or one stepper motor.
• It has an onboard 5V regulator which can be used to power the microcontroller.

12V Battery

• Provides the power source for the motor driver and the motor.

Ultrasonic Sensor

• Used for measuring distance via ultrasonic waves.
• It has four pins: VCC, Trigger, Echo, and GND.

DC Motor

• A simple electric motor that is driven by the motor driver.

IR Sensor

• An infrared sensor used for object detection.
• It has three pins: out, gnd, and vcc.

Wiring Details

Arduino UNO

• 5V and GND are used to power the Ultrasonic Sensor and IR sensors.
• A0 is connected to the output of one IR sensor.
• A1 is connected to the output of the other IR sensor.
• D13 is connected to the Echo pin of the Ultrasonic Sensor.
• D12 is connected to the Trigger pin of the Ultrasonic Sensor.
• D11, D10, D9, D8, D7, and D6 are connected to the ENA, IN1, IN2, IN3, IN4, and ENB pins of the L298N motor driver, respectively.

L298N DC Motor Driver

• 12V and GND are connected to the 12V battery.
• OUT1 and OUT2 are connected to the two pins of the DC motor.
• ENA, IN1, IN2, IN3, IN4, and ENB are controlled by the Arduino UNO.

12V Battery

• + is connected to the 12V input of the L298N motor driver.
• - is connected to the GND of the L298N motor driver.

Ultrasonic Sensor

• +VCC is connected to the 5V output of the Arduino UNO.
• GND is connected to the GND on the Arduino UNO.
• Echo is connected to pin D13 on the Arduino UNO.
• Trigger is connected to pin D12 on the Arduino UNO.

DC Motor

• pin 1 and pin 2 are connected to OUT2 and OUT1 of the L298N motor driver, respectively.

IR Sensor

• Both IR sensors have their vcc connected to 5V on the Arduino UNO and gnd to GND on the Arduino UNO.
• The out pins of the IR sensors are connected to A0 and A1 on the Arduino UNO.

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:

}

This code is a template and does not contain any functional code. It is expected that the user will fill in the setup() function with initialization code and the loop() function with the main logic of the application.