Circuit Documentation

Summary

The circuit in question appears to be a complex system involving multiple Arduino microcontrollers, sensors, a display, a DFPlayer Mini, a loudspeaker, and various other components. The Arduinos are used as the main control units, interfacing with sensors like IR sensors, an inductive sensor, ultrasonic sensors, and a soil moisture sensor. The circuit also includes a power supply unit, a fan, and several LEDs with corresponding resistors. The DFPlayer Mini is connected to a loudspeaker, suggesting audio playback capabilities. The circuit is likely designed for some form of environmental monitoring with user interaction and feedback through sound and display.

Component List

Microcontrollers

• Arduino UNO
• Arduino Nano

Sensors

• IR sensors
• HC-SR04 Ultrasonic Sensors
• Inductive Sensor
• SparkFun Soil Moisture Sensor

Audio Components

• DFPlayer Mini
• Loudspeaker
• Piezo Buzzer
• Buzzer

Displays

• 7 Segment Display (4 Digit)
• Lcd 20x4 i2c
• 16x2 I2C LCD

Actuators

• Servos

Power Components

• POWER SUPPLY 5V 5AMP
• 220 fan
• USB power

Miscellaneous

• LEDs (Red, Green, Yellow)
• Resistors (Various values)
• Power 220v

Wiring Details

Arduino UNO

• Connected to a soil moisture sensor, IR sensors, an inductive sensor, servos, a 7-segment display, a piezo buzzer, LEDs, and ultrasonic sensors.
• Shares 5V and GND with various components for power distribution.

Arduino Nano

• Interfaces with an IR sensor and a DFPlayer Mini.
• Shares 5V and GND with the DFPlayer Mini for power distribution.

DFPlayer Mini

• Receives TX signal from Arduino Nano.
• Connected to a loudspeaker for audio output.

Loudspeaker

• Connected to the DFPlayer Mini for audio playback.

IR Sensors

• Connected to various Arduino pins for signal output.
• Powered by 5V and GND from the Arduinos.

HC-SR04 Ultrasonic Sensors

• TRIG and ECHO pins connected to Arduino UNO pins.
• Powered by 5V and GND from the Arduino UNO.

Inductive Sensor

• Signal pin connected to an Arduino UNO pin.
• Powered by 5V and GND from the Arduino UNO.

SparkFun Soil Moisture Sensor

• SIG pin connected to an Arduino UNO pin.
• Powered by 5V and GND from the Arduino UNO.

Servos

• Pulse pins connected to various Arduino UNO pins.
• Powered by 5V and GND.

7 Segment Display (4 Digit)

• Individual segment pins connected to various Arduino UNO pins.
• Powered by 5V and GND from the Arduino UNO.

Lcd 20x4 i2c and 16x2 I2C LCD

• SDA and SCL pins connected to the corresponding Arduino UNO pins.
• Powered by 5V and GND from the Arduino UNO.

LEDs

• Anodes connected to various Arduino UNO pins.
• Cathodes connected to GND through resistors.

Resistors

• Various resistors used for current limiting and pull-up/pull-down configurations.

Power Supply Components

• POWER SUPPLY 5V 5AMP provides power to the circuit.
• USB power modules and a 220 fan are part of the power distribution system.

Documented Code

Arduino UNO (Main Controller)

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

Arduino Nano (Secondary Controller)

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

(Note: The provided code for all microcontrollers is identical and only a template with empty setup and loop functions. Actual implementation code is required for the circuit to perform any meaningful operations.)