Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes a power source, a motor driver, multiple DC motors, an Arduino UNO microcontroller, an HC-06 Bluetooth module, and an LED. The circuit is designed to control the DC motors via the motor driver, with the Arduino UNO serving as the central control unit. The HC-06 module allows for wireless communication, and the LED serves as an indicator.

Component List

1. 18650 Li-Ion Battery

   • Pins: Positive, Negative
   • Description: A rechargeable lithium-ion battery.
   • Purpose: Provides power to the circuit.

2. DC Motor

   • Pins: pin 1, pin 2
   • Description: A motor that runs on direct current.
   • Purpose: Converts electrical energy into mechanical motion.

3. HC-06 Bluetooth Module

   • Pins: RXD, TXD, GND, VCC
   • Description: A Bluetooth module for wireless communication.
   • Purpose: Enables wireless communication with the Arduino UNO.

4. Arduino UNO

   • 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
   • Description: A microcontroller board based on the ATmega328P.
   • Purpose: Serves as the central control unit for the circuit.

5. L298N DC 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
   • Description: A dual H-Bridge motor driver.
   • Purpose: Controls the speed and direction of the DC motors.

6. LED: Two Pin (green)

   • Pins: cathode, anode
   • Description: A green light-emitting diode.
   • Purpose: Serves as an indicator.

Wiring Details

18650 Li-Ion Battery

• Positive connected to 12V of L298N DC Motor Driver
• Negative connected to GND of L298N DC Motor Driver and GND of Arduino UNO

DC Motor 1

• pin 1 connected to OUT4 of L298N DC Motor Driver
• pin 2 connected to OUT3 of L298N DC Motor Driver

DC Motor 2

• pin 1 connected to OUT1 of L298N DC Motor Driver
• pin 2 connected to OUT2 of L298N DC Motor Driver

HC-06 Bluetooth Module

• VCC connected to 5V of Arduino UNO
• GND connected to GND of Arduino UNO
• TXD connected to D1 of Arduino UNO
• RXD connected to D0 of Arduino UNO

Arduino UNO

• 3.3V connected to anode of LED
• GND connected to Negative of 18650 Li-Ion Battery and GND of HC-06 Bluetooth Module
• Vin connected to 5V of L298N DC Motor Driver
• D13 connected to ENA of L298N DC Motor Driver
• D12 connected to IN1 of L298N DC Motor Driver
• D11 connected to IN2 of L298N DC Motor Driver
• D10 connected to IN3 of L298N DC Motor Driver
• D9 connected to cathode of LED
• D1 connected to TXD of HC-06 Bluetooth Module
• D0 connected to RXD of HC-06 Bluetooth Module

L298N DC Motor Driver

• 12V connected to Positive of 18650 Li-Ion Battery
• GND connected to Negative of 18650 Li-Ion Battery and GND of Arduino UNO
• 5V connected to Vin of Arduino UNO
• ENA connected to D13 of Arduino UNO
• IN1 connected to D12 of Arduino UNO
• IN2 connected to D11 of Arduino UNO
• IN3 connected to D10 of Arduino UNO
• OUT4 connected to pin 1 of DC Motor 1
• OUT3 connected to pin 2 of DC Motor 1
• OUT1 connected to pin 1 of DC Motor 2
• OUT2 connected to pin 2 of DC Motor 2

LED: Two Pin (green)

• anode connected to 3.3V of Arduino UNO
• cathode connected to D9 of Arduino UNO

Documented Code

Arduino UNO Code

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

This code is a basic template for the Arduino UNO. The setup function is used to initialize any settings, and the loop function contains the main code that runs repeatedly.