Circuit Documentation

Summary

This circuit involves an Arduino UNO microcontroller interfacing with various components including a Servo motor, an L298N DC motor driver, an HC-SR04 Ultrasonic Sensor, a 3xAAA Battery Pack, and two DC Motors. The Arduino UNO serves as the central control unit, managing the operations of the connected components.

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

Servo

• Description: A small motor with a feedback sensor for precise control.
• Pins: gnd, vcc, pulse

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

HC-SR04 Ultrasonic Sensor

• Description: A sensor used for distance measurement using ultrasonic waves.
• Pins: VCC, TRIG, ECHO, GND

3xAAA Battery Pack with Switch and JST

• Description: A battery pack providing power to the circuit.
• Pins: POS, NEG

DC Motor (Motor 1)

• Description: A simple DC motor.
• Pins: pin 1, pin 2

DC Motor (Motor 2)

• Description: Another simple DC motor.
• Pins: pin 1, pin 2

Wiring Details

Arduino UNO

• 5V connected to VCC of HC-SR04 Ultrasonic Sensor and vcc of Servo.
• GND connected to gnd of Servo, GND of L298N DC motor driver, NEG of 3xAAA Battery Pack, and GND of HC-SR04 Ultrasonic Sensor.
• Vin connected to 12V of L298N DC motor driver and POS of 3xAAA Battery Pack.
• D11 connected to ENA of L298N DC motor driver.
• D10 connected to IN1 of L298N DC motor driver.
• D9 connected to IN2 of L298N DC motor driver.
• D8 connected to IN3 of L298N DC motor driver.
• D7 connected to IN4 of L298N DC motor driver.
• D6 connected to ENB of L298N DC motor driver.
• D5 connected to pulse of Servo.
• D3 connected to ECHO of HC-SR04 Ultrasonic Sensor.
• D2 connected to TRIG of HC-SR04 Ultrasonic Sensor.

Servo

• vcc connected to 5V of Arduino UNO.
• gnd connected to GND of Arduino UNO.
• pulse connected to D5 of Arduino UNO.

L298N DC Motor Driver

• GND connected to GND of Arduino UNO and NEG of 3xAAA Battery Pack.
• 12V connected to Vin of Arduino UNO and POS of 3xAAA Battery Pack.
• ENA connected to D11 of Arduino UNO.
• IN1 connected to D10 of Arduino UNO.
• IN2 connected to D9 of Arduino UNO.
• IN3 connected to D8 of Arduino UNO.
• IN4 connected to D7 of Arduino UNO.
• ENB connected to D6 of Arduino UNO.
• OUT1 connected to pin 2 of DC Motor 1.
• OUT2 connected to pin 1 of DC Motor 1.
• OUT3 connected to pin 2 of DC Motor 2.
• OUT4 connected to pin 1 of DC Motor 2.

HC-SR04 Ultrasonic Sensor

• VCC connected to 5V of Arduino UNO.
• GND connected to GND of Arduino UNO.
• ECHO connected to D3 of Arduino UNO.
• TRIG connected to D2 of Arduino UNO.

3xAAA Battery Pack with Switch and JST

• POS connected to Vin of Arduino UNO and 12V of L298N DC motor driver.
• NEG connected to GND of Arduino UNO and GND of L298N DC motor driver.

DC Motor (Motor 1)

• pin 2 connected to OUT1 of L298N DC motor driver.
• pin 1 connected to OUT2 of L298N DC motor driver.

DC Motor (Motor 2)

• pin 2 connected to OUT3 of L298N DC motor driver.
• pin 1 connected to OUT4 of L298N DC motor driver.

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:

}

Additional Documentation (documentation.txt)