Circuit Documentation

Summary

This circuit is designed to interface various components with an Arduino UNO microcontroller. It includes a servo motor, an HC-SR04 ultrasonic sensor, a 5V mini water pump, a flame sensor, two DC motors, a 1-Channel Relay, an L298N DC motor driver, a 9V battery, a 12V battery, and two types of DC barrel jacks. The circuit is likely intended for a robotics or automation project that requires distance measurement, flame detection, motor control, and water pumping capabilities.

Component List

Servo

• Description: A motor with feedback control for precise angle positioning.
• Pins: Ground (GND), Power (VCC), Control Pulse (Pulse).

Arduino UNO

• Description: A microcontroller board based on the ATmega328P.
• Pins: Various digital and analog I/O pins, power supply pins, and communication interfaces.

HC-SR04 Ultrasonic Sensor

• Description: A sensor for measuring distance using ultrasonic waves.
• Pins: Power (VCC), Trigger (TRIG), Echo (ECHO), Ground (GND).

5V Mini Water Pump

• Description: A small pump for moving water, operates at 5V.
• Pins: Positive (Positive Pin), Negative (Negative Pin).

Flame Sensor

• Description: A sensor for detecting the presence of a flame.
• Pins: Power (VCC), Ground (GND), Digital Output (D0), Analog Output (A0).

DC Motor

• Description: An electric motor that runs on direct current (DC) electricity.
• Pins: Terminal 1 (Pin 1), Terminal 2 (Pin 2).

1-Channel Relay (5V 10A)

• Description: An electromechanical switch that allows a low-power signal to control a higher power circuit.
• Pins: Normally Closed (NC), Signal (Signal), Common (C), Power (Power), Normally Open (NO), Ground (Ground).

L298N DC Motor Driver

• Description: A dual H-bridge motor driver for controlling the direction and speed of two DC motors.
• Pins: Motor Outputs (OUT1, OUT2, OUT3, OUT4), Power Supply (12V, GND, 5V), Control Inputs (ENA, IN1, IN2, IN3, IN4, ENB), Jumpers for enabling 5V (5V-ENA-JMP-I, 5V-ENA-JMP-O, +5V-J1, +5V-J2).

9V Battery

• Description: A standard 9V battery for providing power.
• Pins: Positive (+), Negative (-).

12V Battery

• Description: A 12V battery for providing power to components requiring higher voltage.
• Pins: Positive (+), Negative (-).

2.1mm DC Barrel Jack

• Description: A connector for power supply adapters.
• Pins: Switch (Switch), Sleeve (Sleeve), Center (Center).

2.1mm Barrel Jack with Terminal Block

• Description: A connector that combines a barrel jack with a terminal block for easy connection to power sources.
• Pins: Positive (POS), Negative (NEG).

Wiring Details

Servo

• Ground (GND) connected to Arduino UNO GND.
• Power (VCC) connected to Arduino UNO 5V.
• Control Pulse (Pulse) connected to Arduino UNO Digital Pin 5 (D5).

Arduino UNO

• Ground (GND) connected to various components for common ground.
• 5V output used to power several 5V components.
• Digital pins (D2, D3, D4, D5, D7, D8, D9, D10, D12) used for control signals to sensors, relay, and motor driver.

HC-SR04 Ultrasonic Sensor

• Power (VCC) connected to Arduino UNO 5V.
• Trigger (TRIG) connected to Arduino UNO Digital Pin 4 (D4).
• Echo (ECHO) connected to Arduino UNO Digital Pin 3 (D3).
• Ground (GND) connected to Arduino UNO GND.

5V Mini Water Pump

• Positive (Positive Pin) connected to 1-Channel Relay Common (C).
• Negative (Negative Pin) connected to 9V Battery Negative (-).

Flame Sensor

• Power (VCC) connected to Arduino UNO 5V.
• Ground (GND) connected to Arduino UNO GND.
• Digital Output (D0) connected to Arduino UNO Digital Pin 2 (D2).

DC Motor (Instance 1)

• Terminal 1 (Pin 1) connected to L298N Motor Output 2 (OUT2).
• Terminal 2 (Pin 2) connected to L298N Motor Output 1 (OUT1).

DC Motor (Instance 2)

• Terminal 1 (Pin 1) connected to L298N Motor Output 4 (OUT4).
• Terminal 2 (Pin 2) connected to L298N Motor Output 3 (OUT3).

1-Channel Relay (5V 10A)

• Power (Power) connected to Arduino UNO 5V.
• Ground (Ground) connected to Arduino UNO GND.
• Signal (Signal) connected to Arduino UNO Digital Pin 12 (D12).
• Common (C) connected to 5V Mini Water Pump Positive (Positive Pin).
• Normally Open (NO) connected to 9V Battery Positive (+).

L298N DC Motor Driver

• Motor Outputs (OUT1, OUT2, OUT3, OUT4) connected to DC Motors.
• Power Supply (12V) connected to 12V Battery Positive (+).
• Ground (GND) connected to Arduino UNO GND.
• Control Inputs (ENA, IN1, IN2, IN3, IN4, ENB) connected to Arduino UNO Digital Pins (D7, D8, D9, D10).
• Jumpers (5V-ENA-JMP-I, 5V-ENA-JMP-O, +5V-J1, +5V-J2) set to enable onboard 5V regulation.

9V Battery

• Positive (+) connected to 1-Channel Relay Normally Open (NO).
• Negative (-) connected to 5V Mini Water Pump Negative (Negative Pin).

12V Battery

• Positive (+) connected to L298N DC Motor Driver 12V.
• Negative (-) connected to 2.1mm Barrel Jack with Terminal Block Negative (NEG).

2.1mm Barrel Jack with Terminal Block

• Positive (POS) connected to 12V Battery Positive (+).
• Negative (NEG) connected to 12V Battery Negative (-).

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 contain any functional code. It needs to be populated with the logic to control the components based on the circuit's requirements.