Circuit Documentation

Summary

This circuit is designed to control a set of motors and wheels, a mini water pump, and read from flame sensors using an Arduino UNO as the central microcontroller. It includes a Bluetooth module for wireless communication, a motor driver to control the motors, and a servo motor for additional actuation. The circuit is powered by 12V batteries and includes toggle and rocker switches for power control. Flame sensors are used for detecting fire or flame presence, and a relay is used to control the water pump. The circuit is designed for applications such as a fire-fighting robot or an automated watering system.

Component List

Arduino UNO

• Microcontroller board based on the ATmega328P
• Provides digital and analog I/O pins for interfacing with other components

L298N DC Motor Driver

• Module for controlling up to two DC motors with direction and speed control

Motors and Wheels (4x)

• DC motors connected to wheels for mobility

Batteries 12V (2x)

• Provide power to the motor driver and the motors

Toggle Switch SPST

• Single Pole Single Throw switch for power control

5V Mini Water Pump

• A small pump for moving water, controlled by the relay

Power Jack

• Connector for external power supply

Rocker Switch

• Switch for turning the circuit on and off

HC-05 Bluetooth Module

• Wireless communication module for Bluetooth connectivity

KY-026 Flame Sensors (3x)

• Sensors for detecting flames or fire

5V Relay

• Electromechanical switch used to control the water pump

Micro Servo 9G

• Small servo motor for precise control of mechanical movement

Wiring Details

Arduino UNO

• 5V and GND pins are used to power the Bluetooth module, flame sensors, servo, and relay
• A0, A1, A2 pins are connected to the digital outputs of the flame sensors
• D12, D11, D9, D7, D6, D5, D4, D3 pins are used to control the motor driver, servo, and relay
• D1, D0 pins are connected to the TX and RX pins of the Bluetooth module

L298N DC Motor Driver

• GND connected to the Arduino GND and battery negative
• 12V connected to the toggle switch and then to the battery positive
• ENA, IN1, IN2, IN3, IN4, ENB connected to Arduino digital pins for motor control
• OUT1, OUT2, OUT3, OUT4 connected to the motors

Motors and Wheels

• Each motor has vcc and GND connected to the corresponding outputs of the motor driver

Toggle Switch SPST

• Connected between the 12V battery and the motor driver 12V input

5V Mini Water Pump

• Positive pin connected to the relay Normally Open contact
• Negative pin connected to the battery negative

Power Jack

• POSITIF connected to the rocker switch output
• NEGATIF connected to the battery negative

Rocker Switch

• Input connected to the second 12V battery positive
• Output connected to the power jack positive

HC-05 Bluetooth Module

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

KY-026 Flame Sensors

• VCC connected to Arduino 5V
• GND connected to Arduino GND
• DO connected to Arduino analog pins A0, A1, A2

5V Relay

• VCC connected to Arduino 5V
• GND connected to Arduino GND
• In connected to Arduino D7
• Common terminal connected to the 5V relay VCC
• Normally Open connected to the water pump positive

Micro Servo 9G

• +5V connected to Arduino 5V
• GND connected to Arduino GND
• PWM connected to Arduino D9

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:

}

Note: The provided code is a template and does not include specific functionality. It needs to be populated with the logic for reading sensors, controlling motors, and handling Bluetooth communication.