Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an Arduino UNO microcontroller, two ultrasonic sensors, a DC motor driver, two DC motors, a pushbutton, and a power source consisting of two 18650 Li-ion batteries. The circuit is designed to control the DC motors based on input from the ultrasonic sensors and the pushbutton.

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

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

Ultrasonic Sensor

• Description: A sensor that measures distance by using ultrasonic waves.
• Pins: +VCC, Trigger, Echo, GND

DC Motor

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

18650 Li-ion Battery x 2

• Description: A power source consisting of two 18650 Li-ion batteries.
• Pins: +, -

Pushbutton

• Description: A simple pushbutton switch.
• Pins: Pin 3 (out), Pin 4 (out), Pin 1 (in), Pin 2 (in)

Wiring Details

Arduino UNO

• GND: Connected to GND of both Ultrasonic Sensors, L298N DC Motor Driver, and Pushbutton.
• 5V: Connected to +VCC of both Ultrasonic Sensors.
• Vin: Connected to 5V of L298N DC Motor Driver.
• D2: Connected to Pin 2 (in) of Pushbutton.
• D4: Connected to Trigger of Ultrasonic Sensor.
• D5: Connected to Echo of Ultrasonic Sensor.
• D6: Connected to Trigger of Ultrasonic Sensor.
• D7: Connected to Echo of Ultrasonic Sensor.
• D8: Connected to IN1 and IN3 of L298N DC Motor Driver.
• D9: Connected to IN2 and IN4 of L298N DC Motor Driver.
• D10: Connected to ENA of L298N DC Motor Driver.
• D11: Connected to ENB of L298N DC Motor Driver.

L298N DC Motor Driver

• GND: Connected to GND of Arduino UNO and - of 18650 Li-ion Battery.
• 5V: Connected to Vin of Arduino UNO.
• 12V: Connected to + of 18650 Li-ion Battery.
• ENA: Connected to D10 of Arduino UNO.
• ENB: Connected to D11 of Arduino UNO.
• IN1: Connected to D8 of Arduino UNO.
• IN2: Connected to D9 of Arduino UNO.
• IN3: Connected to D8 of Arduino UNO.
• IN4: Connected to D9 of Arduino UNO.
• OUT1: Connected to pin 2 of DC Motor.
• OUT2: Connected to pin 1 of DC Motor.
• OUT3: Connected to pin 2 of DC Motor.
• OUT4: Connected to pin 1 of DC Motor.

Ultrasonic Sensor

• GND: Connected to GND of Arduino UNO.
• +VCC: Connected to 5V of Arduino UNO.
• Trigger: Connected to D4 and D6 of Arduino UNO.
• Echo: Connected to D5 and D7 of Arduino UNO.

DC Motor

• pin 1: Connected to OUT2 and OUT4 of L298N DC Motor Driver.
• pin 2: Connected to OUT1 and OUT3 of L298N DC Motor Driver.

18650 Li-ion Battery x 2

• +: Connected to 12V of L298N DC Motor Driver.
• -: Connected to GND of L298N DC Motor Driver and Arduino UNO.

Pushbutton

• Pin 2 (in): Connected to D2 of Arduino UNO.
• Pin 4 (out): Connected to GND of 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:

}

Additional Documentation (documentation.txt)