Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes various components such as servos, a gear motor, a rocker switch, an HC-05 Bluetooth module, an L298N motor driver, an XL4015 step-down converter, a 12V relay, an LED, a ceramic capacitor, an Arduino UNO, and a 2000mAh battery. The circuit is designed to control multiple servos and motors, with power regulation and communication capabilities.

Component List

Servo

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

Hobby Gearmotor with 48:1 gearbox

• Description: A gear motor with a 48:1 gearbox for high torque applications.
• Pins: pin 1, pin 2

Rocker Switch (SPST)

• Description: A single-pole single-throw (SPST) rocker switch used to control the power supply.
• Pins: 1, 2

HC-05 Bluetooth Module

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

L298N DC Motor Driver

• Description: A motor driver used to control the speed and direction 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

XL4015 Step-Down Bulk Converter

• Description: A step-down converter used to regulate voltage.
• Pins: input -, input +, output +, output -

12V Relay

• Description: A relay used to control high voltage devices.
• Pins: +, -, C, NC, NO

LED: Two Pin (Red)

• Description: A red LED used for indication.
• Pins: cathode, anode

Ceramic Capacitor

• Description: A capacitor used for filtering and stabilization.
• Pins: pin0, pin1
• Properties: Capacitance: 1e-7 Farads

Arduino UNO

• Description: A microcontroller board used for controlling the circuit.
• 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

2000mAh Battery

• Description: A battery used to power the circuit.
• Pins: VCC, GND

Wiring Details

Servo

• gnd: Connected to GND of XL4015 step-down bulk converter
• vcc: Connected to NC of 12V Relay
• pulse:
  • Servo 1: Connected to D11 of Arduino UNO
  • Servo 2: Connected to D10 of Arduino UNO
  • Servo 3: Connected to D9 of Arduino UNO

Hobby Gearmotor with 48:1 gearbox

• pin 1:
  • Motor 1: Connected to OUT2 of L298N DC motor driver
  • Motor 2: Connected to OUT3 of L298N DC motor driver
• pin 2:
  • Motor 1: Connected to OUT1 of L298N DC motor driver
  • Motor 2: Connected to OUT4 of L298N DC motor driver

Rocker Switch (SPST)

• 1: Connected to GND of 2000mAh Battery
• 2: Connected to 12V of L298N DC motor driver

HC-05 Bluetooth Module

• EN: Not connected
• VCC: Connected to 5V of Arduino UNO
• GND: Connected to GND of XL4015 step-down bulk converter
• TXD: Connected to D1 of Arduino UNO
• RXD: Connected to D0 of Arduino UNO
• STATE: Not connected

L298N DC Motor Driver

• OUT1: Connected to pin 2 of Hobby Gearmotor 1
• OUT2: Connected to pin 1 of Hobby Gearmotor 1
• 12V: Connected to pin 2 of Rocker Switch (SPST)
• GND: Connected to GND of XL4015 step-down bulk converter
• 5V: Not connected
• OUT3: Connected to pin 1 of Hobby Gearmotor 2
• OUT4: Connected to pin 2 of Hobby Gearmotor 2
• ENA: Connected to D5 of Arduino UNO
• IN1: Connected to D2 of Arduino UNO
• IN2: Connected to D3 of Arduino UNO
• IN3: Connected to D4 of Arduino UNO
• IN4: Connected to D7 of Arduino UNO
• ENB: Connected to D6 of Arduino UNO

XL4015 Step-Down Bulk Converter

• input -: Connected to VCC of 2000mAh Battery
• input +: Connected to GND of 2000mAh Battery
• output +: Connected to C and - of 12V Relay
• output -: Connected to NO of 12V Relay

12V Relay

• +: Connected to D13 of Arduino UNO
• -: Connected to C and output + of XL4015 step-down bulk converter
• C: Connected to output + of XL4015 step-down bulk converter
• NC: Connected to vcc of Servo
• NO: Connected to output - of XL4015 step-down bulk converter

LED: Two Pin (Red)

• cathode: Connected to C and - of 12V Relay
• anode: Connected to NC of 12V Relay

Ceramic Capacitor

• pin0: Connected to C and - of 12V Relay
• pin1: Connected to NC of 12V Relay

Arduino UNO

• GND: Connected to GND of XL4015 step-down bulk converter
• 5V: Connected to VCC of HC-05 Bluetooth Module
• D13: Connected to + of 12V Relay
• D11: Connected to pulse of Servo 1
• D10: Connected to pulse of Servo 2
• D9: Connected to pulse of Servo 3
• D7: Connected to IN4 of L298N DC motor driver
• D6: Connected to ENB of L298N DC motor driver
• D5: Connected to ENA of L298N DC motor driver
• D4: Connected to IN3 of L298N DC motor driver
• D3: Connected to IN2 of L298N DC motor driver
• D2: Connected to IN1 of L298N DC motor driver
• D1: Connected to TXD of HC-05 Bluetooth Module
• D0: Connected to RXD of HC-05 Bluetooth Module

2000mAh Battery

• VCC: Connected to input - of XL4015 step-down bulk converter
• GND: Connected to input + of XL4015 step-down bulk converter

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 a summary, component list, wiring details, and documented code. Each component is described, and its connections are detailed to ensure proper assembly and functionality of the circuit.