Circuit Documentation

Summary

This circuit integrates various components controlled by an Arduino UNO microcontroller. It includes a servomotor, a Bluetooth module, a laser emitter, a buzzer, light-dependent resistors (LDRs), LEDs, a DC motor, and a motor driver. The circuit is designed to perform multiple functions, such as wireless communication, light sensing, motion control, and visual signaling.

Component List

Servomotor SG90

• Pins: SIG, VCC, GND
• Description: A small and lightweight servo used for motion control.

Arduino UNO

• Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0-A5, SCL, SDA, AREF, D0-D13
• Description: A microcontroller board based on the ATmega328P, used as the main controller for the circuit.

HC-05 Bluetooth Module

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

KY-008 Laser Emitter

• Pins: SIG, 5V, GND
• Description: A module that emits a laser beam, used for signaling or optical communication.

Buzzer

• Pins: PIN, GND
• Description: An audible signaling device.

Sensor LDR LM393

• Pins: A0, D0, GND, VCC
• Description: A light sensor module that detects the intensity of light.

DC Motor

• Pins: pin 1, pin 2
• Description: An electric motor that converts electrical energy into mechanical motion.

LED: Two Pin (red)

• Pins: cathode, anode
• Description: A red light-emitting diode used for visual signaling.

LED: Two Pin (green)

• Pins: cathode, anode
• Description: A green light-emitting diode used for visual signaling.

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 motor driver module that controls the direction and speed of DC motors.

Wiring Details

Servomotor SG90

• SIG: Connected to Arduino UNO D8
• VCC: Connected to Arduino UNO 5V
• GND: Connected to Arduino UNO GND

HC-05 Bluetooth Module

• VCC: Connected to Arduino UNO 5V
• TXD: Connected to Arduino UNO D0
• RXD: Connected to Arduino UNO D1
• GND: Connected to Arduino UNO GND

KY-008 Laser Emitter

• SIG: Connected to Arduino UNO D2
• 5V: Connected to Arduino UNO 5V
• GND: Connected to Arduino UNO GND

Buzzer

• PIN: Connected to Arduino UNO D9
• GND: Connected to Arduino UNO GND

Sensor LDR LM393

• A0: Connected to Arduino UNO A0
• VCC: Connected to Arduino UNO 5V
• GND: Connected to Arduino UNO GND

DC Motor

• pin 1: Connected to L298N DC Motor Driver OUT1
• pin 2: Connected to L298N DC Motor Driver OUT2

LED: Two Pin (red)

• anode: Connected to Arduino UNO D4
• cathode: Connected to Arduino UNO GND

LED: Two Pin (green)

• anode (1st instance): Connected to Arduino UNO D5
• anode (2nd instance): Connected to Arduino UNO D3
• cathode: Connected to Arduino UNO GND (shared by both instances)

L298N DC Motor Driver

• IN3: Connected to Arduino UNO D6
• IN4: Connected to Arduino UNO D7
• 12V: Connected to Arduino UNO 5V
• 5V: Connected to Arduino UNO 5V
• GND: Connected to Arduino UNO GND

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 Notes

• The provided code is a template and does not contain any functional implementation. It needs to be populated with the logic to control the components based on the circuit's requirements.
• The code for the Arduino UNO is written in the Arduino programming language, which is based on C/C++.
• The setup() function is called once when the microcontroller is powered on or reset. It is used to initialize the pins and set the initial state of the components.
• The loop() function is called repeatedly and contains the main logic that controls the circuit's behavior.