Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes various components such as motors, sensors, a microcontroller, and a driver shield. The circuit is designed to control multiple motors and sensors, and it includes an Arduino UNO microcontroller for processing and control. The components are interconnected through a driver shield, which facilitates the control of motors and sensors.

Component List

Hobby Gearmotor with 48:1 Gearbox

• Description: A small DC motor with a 48:1 gearbox for increased torque.
• Pins: pin 1, pin 2

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

HC-SR04 Ultrasonic Sensor

• Description: A sensor used for distance measurement.
• Pins: VCC, TRIG, ECHO, GND

DRIVER SHIELD L293D

• Description: A motor driver shield for controlling DC motors and sensors.
• Pins: RESET, 3.3V, 5V, GND, VIN, 9V, A0, A1, A2, A3, A4, A5, M2 (+), M2 GND (-), M1 (+), M1 GND (-), M3 (+), M3 GND (-), M4 GND (-), M4 (+), SERVO_2, SERVO_1, RX/D0, TX/D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, ARef, D13, D12, VCC (External Power Supply), GND (External Power Supply)

7.4v Battery

• Description: A 7.4V battery for powering the circuit.
• Pins: +, -

Rocker Switch

• Description: A switch for controlling the power supply.
• Pins: 1, 2

HC-05 Bluetooth Module

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

IR Sensor

• Description: An infrared sensor for object detection.
• Pins: out, gnd, vcc

Fan

• Description: A small fan for cooling purposes.
• Pins: GND, 5V

Buzzer

• Description: A buzzer for sound output.
• Pins: PIN, GND

16x2 I2C LCD

• Description: A 16x2 character LCD with I2C interface.
• Pins: GND, VCC, SDA, SCL

Wiring Details

Hobby Gearmotor with 48:1 Gearbox

• Motor 1:

  • pin 1 connected to DRIVER SHIELD L293D M4 GND (-)
  • pin 2 connected to DRIVER SHIELD L293D M4 (+)

• Motor 2:

  • pin 1 connected to DRIVER SHIELD L293D M3 GND (-)
  • pin 2 connected to DRIVER SHIELD L293D M3 (+)

• Motor 3:

  • pin 1 connected to DRIVER SHIELD L293D M1 GND (-)
  • pin 2 connected to DRIVER SHIELD L293D M1 (+)

• Motor 4:

  • pin 1 connected to DRIVER SHIELD L293D M2 GND (-)
  • pin 2 connected to DRIVER SHIELD L293D M2 (+)

HC-SR04 Ultrasonic Sensor

• Sensor 1:

  • VCC connected to DRIVER SHIELD L293D 5V
  • GND connected to DRIVER SHIELD L293D GND
  • TRIG connected to DRIVER SHIELD L293D D2
  • ECHO connected to DRIVER SHIELD L293D D3

• Sensor 2:

  • VCC connected to DRIVER SHIELD L293D 5V
  • GND connected to DRIVER SHIELD L293D GND
  • TRIG connected to DRIVER SHIELD L293D D4
  • ECHO connected to DRIVER SHIELD L293D D5

• Sensor 3:

  • VCC connected to DRIVER SHIELD L293D 5V
  • GND connected to DRIVER SHIELD L293D GND
  • TRIG connected to DRIVER SHIELD L293D D6
  • ECHO connected to DRIVER SHIELD L293D D7

IR Sensor

• Sensor 1:

  • vcc connected to DRIVER SHIELD L293D 5V
  • gnd connected to DRIVER SHIELD L293D GND
  • out connected to DRIVER SHIELD L293D A0

• Sensor 2:

  • vcc connected to DRIVER SHIELD L293D 5V
  • gnd connected to DRIVER SHIELD L293D GND
  • out connected to DRIVER SHIELD L293D D13

• Sensor 3:

  • vcc connected to DRIVER SHIELD L293D 5V
  • gnd connected to DRIVER SHIELD L293D GND
  • out connected to DRIVER SHIELD L293D D12

• Sensor 4:

  • vcc connected to DRIVER SHIELD L293D 5V
  • gnd connected to DRIVER SHIELD L293D GND
  • out connected to DRIVER SHIELD L293D A1

Fan

• Fan:
  • 5V connected to DRIVER SHIELD L293D 5V
  • GND connected to DRIVER SHIELD L293D GND

Buzzer

• Buzzer:
  • PIN connected to DRIVER SHIELD L293D D8
  • GND connected to DRIVER SHIELD L293D GND

16x2 I2C LCD

• LCD:
  • VCC connected to DRIVER SHIELD L293D 5V
  • GND connected to DRIVER SHIELD L293D GND
  • SDA connected to DRIVER SHIELD L293D A4
  • SCL connected to DRIVER SHIELD L293D A5

HC-05 Bluetooth Module

• Bluetooth Module:
  • VCC connected to DRIVER SHIELD L293D 5V
  • GND connected to DRIVER SHIELD L293D GND
  • TXD connected to DRIVER SHIELD L293D RX/D0
  • RXD connected to DRIVER SHIELD L293D TX/D1

7.4v Battery

• Battery:
  • • connected to Rocker Switch pin 1
  • • connected to DRIVER SHIELD L293D GND (External Power Supply)

Rocker Switch

• Switch:
  • pin 1 connected to 7.4v Battery +
  • pin 2 connected to DRIVER SHIELD L293D VCC (External Power Supply)

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 concludes the documentation for the circuit. Each component and its connections have been detailed, and the code for the Arduino UNO microcontroller has been provided.