Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an Arduino UNO microcontroller, a 18650 Li-Ion battery, an L298N DC motor driver, a rocker switch, two DC motors, and a 18650 lithium-ion charger. The circuit is designed to control the DC motors using the Arduino UNO, powered by the 18650 Li-Ion battery, with the L298N motor driver facilitating the motor control.

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

18650 Li-Ion

• Description: A rechargeable lithium-ion battery.
• Pins: Positive, Negative

L298N DC Motor Driver

• Description: A dual H-bridge motor driver that allows control of the speed and direction 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

Rocker Switch

• Description: A simple on/off switch.
• Pins: 1, 2

DC Motor

• Description: A motor that runs on direct current (DC).
• Pins: pin 1, pin 2

18650 Lithium-Ion Charger

• Description: A charger module for 18650 lithium-ion batteries.
• Pins: V IN, GND, OUT, IN, BAT IN, BAT GND

Wiring Details

Arduino UNO

• 5V connected to 5V of L298N DC motor driver
• GND connected to GND of L298N DC motor driver and GND of 18650 Lithium-Ion Charger
• D9 connected to IN4 of L298N DC motor driver
• D7 connected to ENB of L298N DC motor driver
• D6 connected to IN3 of L298N DC motor driver
• D5 connected to IN2 of L298N DC motor driver
• D4 connected to ENA of L298N DC motor driver
• D3 connected to IN1 of L298N DC motor driver

18650 Li-Ion

• Positive connected to 1 of Rocker Switch
• Negative connected to GND of 18650 Lithium-Ion Charger

L298N DC Motor Driver

• 5V connected to 5V of Arduino UNO
• GND connected to GND of Arduino UNO and GND of 18650 Lithium-Ion Charger
• IN4 connected to D9 of Arduino UNO
• ENB connected to D7 of Arduino UNO
• IN3 connected to D6 of Arduino UNO
• IN2 connected to D5 of Arduino UNO
• ENA connected to D4 of Arduino UNO
• IN1 connected to D3 of Arduino UNO
• OUT1 connected to pin 2 of DC Motor
• OUT2 connected to pin 1 of DC Motor
• 12V connected to 2 of Rocker Switch
• OUT3 connected to pin 2 of DC Motor
• OUT4 connected to pin 1 of DC Motor
• 5V-ENA-JMP-I connected to 5V-ENA-JMP-O of L298N DC motor driver

Rocker Switch

• 1 connected to Positive of 18650 Li-Ion
• 2 connected to 12V of L298N DC motor driver

DC Motor (Instance 1)

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

DC Motor (Instance 2)

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

18650 Lithium-Ion Charger

• OUT connected to GND of L298N DC motor driver and GND of Arduino UNO
• IN connected to 1 of Rocker Switch
• BAT IN connected to Positive of 18650 Li-Ion
• BAT GND connected to Negative of 18650 Li-Ion

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)

This document provides a comprehensive overview of the circuit, including the components used, their wiring details, and the code for the Arduino UNO microcontroller.