Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes various components such as servos, DC motors, a buck converter, a 12V battery, an L298N DC motor driver, an Arduino Nano, and an HC-05 Bluetooth module. The circuit is designed to control multiple motors and servos, with power regulation provided by a buck converter and communication facilitated by a Bluetooth module.

Component List

Servo

• Description: A servo motor used for precise control of angular position.
• Pins: gnd, vcc, pulse

DC Motor

• Description: A DC motor used for continuous rotation.
• Pins: pin 1, pin 2

Buck Converter

• Description: A DC-DC converter used to step down voltage.
• Pins: IN+, IN-, OUT+, OUT-

12V Battery

• Description: A power source providing 12V.
• Pins: -, +

L298N DC Motor Driver

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

Arduino Nano

• Description: A microcontroller board based on the ATmega328P.
• Pins: D1/TX, D0/RX, RESET, GND, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11/MOSI, D12/MISO, VIN, 5V, A7, A6, A5, A4, A3, A2, A1, A0, AREF, 3V3, D13/SCK

HC-05 Bluetooth Module

• Description: A Bluetooth module used for wireless communication.
• Pins: Key, VCC, GND, TXD, RXD, State

Wiring Details

Servo

• gnd: Connected to Buck converter OUT-
• vcc: Connected to Buck converter OUT+
• pulse:
  • One servo connected to Arduino Nano D9
  • Another servo connected to Arduino Nano D10

DC Motor

• Motor 1:

  • pin 1: Connected to L298N DC motor driver OUT2
  • pin 2: Connected to L298N DC motor driver OUT1

• Motor 2:

  • pin 1: Connected to L298N DC motor driver OUT3
  • pin 2: Connected to L298N DC motor driver OUT4

• Motor 3:

  • pin 1: Connected to L298N DC motor driver OUT3
  • pin 2: Connected to L298N DC motor driver OUT4

Buck Converter

• IN+: Connected to 12V Battery +
• IN-: Connected to 12V Battery -
• OUT+: Connected to Servo vcc
• OUT-: Connected to Servo gnd

12V Battery

• +: Connected to Buck converter IN+ and L298N DC motor driver 12V
• -: Connected to Buck converter IN- and L298N DC motor driver GND

L298N DC Motor Driver

• OUT1: Connected to DC Motor pin 2
• OUT2: Connected to DC Motor pin 1
• OUT3: Connected to DC Motor pin 1
• OUT4: Connected to DC Motor pin 2
• 12V: Connected to 12V Battery +
• GND: Connected to 12V Battery -
• ENA: Connected to Arduino Nano D5
• IN1: Connected to Arduino Nano D7
• IN2: Connected to Arduino Nano D8
• IN3: Connected to Arduino Nano D11/MOSI
• IN4: Connected to Arduino Nano D12/MISO
• ENB: Connected to Arduino Nano D6

Arduino Nano

• VIN: Connected to Buck converter IN+
• GND: Connected to Buck converter OUT-
• D2: Connected to HC-05 Bluetooth Module TXD
• D3: Connected to HC-05 Bluetooth Module RXD
• D5: Connected to L298N DC motor driver ENA
• D6: Connected to L298N DC motor driver ENB
• D7: Connected to L298N DC motor driver IN1
• D8: Connected to L298N DC motor driver IN2
• D9: Connected to Servo pulse
• D10: Connected to Servo pulse
• D11/MOSI: Connected to L298N DC motor driver IN3
• D12/MISO: Connected to L298N DC motor driver IN4
• 5V: Connected to HC-05 Bluetooth Module VCC

HC-05 Bluetooth Module

• VCC: Connected to Arduino Nano 5V
• GND: Connected to Buck converter OUT-
• TXD: Connected to Arduino Nano D2
• RXD: Connected to Arduino Nano D3

Documented Code

Arduino Nano 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 a summary, component list, wiring details, and documented code.