Circuit Documentation

Summary

This circuit is designed to interface an Arduino UNO with various sensors, a motor driver, a relay module, and other components to create a functional system. The Arduino UNO serves as the central microcontroller, receiving inputs from flame sensors and controlling motors, a water pump, and other peripherals through the motor driver and relay module.

Component List

1. 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

2. 9V Battery

   • Description: A standard 9V battery.
   • Pins: -, +

3. L298N DC Motor Driver

   • Description: A dual H-Bridge 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

4. Motor and Wheels

   • Description: A motor with attached wheels.
   • Pins: vcc, GND

5. Flame Sensor

   • Description: A sensor to detect flame.
   • Pins: VCC, GND, OUTPUT

6. 18650 Li-ion Battery x 2

   • Description: Two 18650 Li-ion batteries.
   • Pins: +, -

7. Rocker Switch

   • Description: A simple on/off switch.
   • Pins: 1, 2

8. Relay 4 Channel 5V

   • Description: A 4-channel relay module.
   • Pins: GND, IN1, IN2, IN3, IN4, VCC, COM1, COM2, COM3, COM4, NO1, NO2, NO3, NO4, NC1, NC2, NC3, NC4

9. Water Pump

   • Description: A small water pump.
   • Pins: positive, negative

Wiring Details

Arduino UNO

• GND connected to:

  • Flame Sensor (GND)
  • Flame Sensor (GND)
  • Flame Sensor (GND)
  • Relay 4 Channel 5V (GND)

• 5V connected to:

  • Flame Sensor (VCC)
  • Flame Sensor (VCC)
  • Flame Sensor (VCC)
  • Relay 4 Channel 5V (VCC)

• D13 connected to:

  • Flame Sensor (OUTPUT)

• D12 connected to:

  • Flame Sensor (OUTPUT)

• D11 connected to:

  • Flame Sensor (OUTPUT)

• D9 connected to:

  • L298N DC Motor Driver (IN4)

• D8 connected to:

  • L298N DC Motor Driver (IN3)

• D7 connected to:

  • L298N DC Motor Driver (IN2)

• D6 connected to:

  • L298N DC Motor Driver (IN1)

• D3 connected to:

  • Relay 4 Channel 5V (IN1)

• D2 connected to:

  • L298N DC Motor Driver (ENB)

• D1 connected to:

  • L298N DC Motor Driver (ENA)

9V Battery

• + not connected
• - not connected

L298N DC Motor Driver

• GND connected to:

  • Water Pump (negative)
  • 18650 Li-ion Battery x 2 (-)

• 12V connected to:

  • Rocker Switch (1)

• OUT1 connected to:

  • Motor and Wheels (vcc)

• OUT2 connected to:

  • Motor and Wheels (GND)

• OUT3 connected to:

  • Motor and Wheels (GND)

• OUT4 connected to:

  • Motor and Wheels (vcc)

Motor and Wheels

• vcc connected to:

  • L298N DC Motor Driver (OUT1)
  • L298N DC Motor Driver (OUT4)

• GND connected to:

  • L298N DC Motor Driver (OUT2)
  • L298N DC Motor Driver (OUT3)

Flame Sensor

• GND connected to:

  • Arduino UNO (GND)
  • Arduino UNO (GND)
  • Arduino UNO (GND)

• VCC connected to:

  • Arduino UNO (5V)
  • Arduino UNO (5V)
  • Arduino UNO (5V)

• OUTPUT connected to:

  • Arduino UNO (D13)
  • Arduino UNO (D12)
  • Arduino UNO (D11)

18650 Li-ion Battery x 2

• + connected to:

  • Rocker Switch (2)

• - connected to:

  • L298N DC Motor Driver (GND)

Rocker Switch

• 1 connected to:

  • L298N DC Motor Driver (12V)
  • Relay 4 Channel 5V (COM1)

• 2 connected to:

  • 18650 Li-ion Battery x 2 (+)

Relay 4 Channel 5V

• GND connected to:

  • Arduino UNO (GND)

• VCC connected to:

  • Arduino UNO (5V)

• IN1 connected to:

  • Arduino UNO (D3)

• COM1 connected to:

  • Rocker Switch (1)

• NC1 connected to:

  • Water Pump (positive)

Water Pump

• positive connected to:

  • Relay 4 Channel 5V (NC1)

• negative connected to:

  • L298N DC Motor Driver (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 Documentation (documentation.txt)

This documentation provides a comprehensive overview of the circuit, including a summary, detailed component list, wiring details, and the code used in the Arduino UNO.