Circuit Documentation

Summary

This circuit involves an Arduino UNO microcontroller interfacing with multiple HC-SR04 ultrasonic sensors, an L298N DC motor driver, two hobby motors, and a rocker switch. The circuit is powered by a 7.4V battery. The Arduino UNO is used to control the ultrasonic sensors and the motor driver, which in turn controls the hobby motors.

Component List

Arduino UNO

• Description: A microcontroller board based on the ATmega328P.
• Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0, A1, A2, A3, A4, A5, SCL, SDA, AREF, D13, D12, D11, D10, D9, D8, D7, D6, D5, D4, D3, D2, D1, D0

HC-SR04 Ultrasonic Sensor

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

L298N DC Motor Driver

• Description: A dual H-Bridge motor driver.
• 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: +, -

Motor amarillo motorreductor hobby

• Description: A hobby motor with a gearbox.
• Pins: vcc, GND

Rocker Switch

• Description: A switch to control the power supply.
• Pins: 1, 2

Wiring Details

Arduino UNO

• 5V connected to:

  • VCC of HC-SR04 Ultrasonic Sensor (3 instances)

• GND connected to:

  • GND of HC-SR04 Ultrasonic Sensor (3 instances)
  • GND of L298N DC Motor Driver
  • • of 7.4V Battery

• Vin connected to:

  • 5V of L298N DC Motor Driver

• A0 connected to:

  • TRIG of HC-SR04 Ultrasonic Sensor (1 instance)

• A1 connected to:

  • ECHO of HC-SR04 Ultrasonic Sensor (1 instance)

• A2 connected to:

  • ECHO of HC-SR04 Ultrasonic Sensor (1 instance)

• A3 connected to:

  • TRIG of HC-SR04 Ultrasonic Sensor (1 instance)

• A4 connected to:

  • ECHO of HC-SR04 Ultrasonic Sensor (1 instance)

• A5 connected to:

  • TRIG of HC-SR04 Ultrasonic Sensor (1 instance)

• D10 connected to:

  • ENB of L298N DC Motor Driver

• D9 connected to:

  • IN4 of L298N DC Motor Driver

• D8 connected to:

  • IN3 of L298N DC Motor Driver

• D7 connected to:

  • IN2 of L298N DC Motor Driver

• D6 connected to:

  • IN1 of L298N DC Motor Driver

• D5 connected to:

  • ENA of L298N DC Motor Driver

HC-SR04 Ultrasonic Sensor

• VCC connected to:

  • 5V of Arduino UNO

• GND connected to:

  • GND of Arduino UNO

• TRIG connected to:

  • A0, A3, A5 of Arduino UNO (one instance each)

• ECHO connected to:

  • A1, A2, A4 of Arduino UNO (one instance each)

L298N DC Motor Driver

• GND connected to:

  • GND of Arduino UNO
  • • of 7.4V Battery

• 5V connected to:

  • Vin of Arduino UNO

• ENB connected to:

  • D10 of Arduino UNO

• IN4 connected to:

  • D9 of Arduino UNO

• IN3 connected to:

  • D8 of Arduino UNO

• IN2 connected to:

  • D7 of Arduino UNO

• IN1 connected to:

  • D6 of Arduino UNO

• ENA connected to:

  • D5 of Arduino UNO

• OUT1 connected to:

  • GND of Motor amarillo motorreductor hobby (1 instance)

• OUT2 connected to:

  • vcc of Motor amarillo motorreductor hobby (1 instance)

• OUT3 connected to:

  • GND of Motor amarillo motorreductor hobby (1 instance)

• OUT4 connected to:

  • vcc of Motor amarillo motorreductor hobby (1 instance)

• 12V connected to:

  • 1 of Rocker Switch

7.4V Battery

• - connected to:

  • GND of L298N DC Motor Driver
  • GND of Arduino UNO

• + connected to:

  • 2 of Rocker Switch

Motor amarillo motorreductor hobby

• vcc connected to:

  • OUT2, OUT4 of L298N DC Motor Driver (one instance each)

• GND connected to:

  • OUT1, OUT3 of L298N DC Motor Driver (one instance each)

Rocker Switch

• 1 connected to:

  • 12V of L298N DC Motor Driver

• 2 connected to:

  • • of 7.4V Battery

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:

}

Documentation (documentation.txt)