Circuit Documentation

Summary of the Circuit

This circuit is designed to interface various sensors and actuators with an Arduino UNO microcontroller. The components include an LCD display for user interface, an HC-SR04 ultrasonic sensor for distance measurement, a soil moisture module and sensor for detecting soil humidity, and an SG90 servo motor for actuation based on sensor inputs. The Arduino UNO serves as the central processing unit, reading sensor data, controlling the servo motor, and displaying information on the LCD. Power distribution is managed through common VCC and GND connections to the Arduino's 5V and GND pins.

Component List

LCD Display 16x4 I2C

• Description: A 16x4 character LCD display with an I2C interface for displaying text and numbers.
• Pins: SCL, SDA, VCC, GND

HC-SR04 Ultrasonic Sensor

• Description: An ultrasonic ranging module to measure distances using sonar.
• Pins: VCC, TRIG, ECHO, GND

Arduino UNO

• Description: A microcontroller board based on the ATmega328P, with digital and analog I/O pins.
• Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0-A5, SCL, SDA, AREF, D0-D13

Soil Moisture Module

• Description: An electronic module used to measure the moisture level in soil.
• Pins: positive, negative, Analog, Digital, Ground, VCC

Soil Moisture Sensor

• Description: A sensor that measures the volumetric content of water in soil.
• Pins: VCC, GND, SIG

SG90 Servo Motor

• Description: A small and lightweight servo motor capable of precise control.
• Pins: PWM, 5V, GND

Wiring Details

LCD Display 16x4 I2C

• SCL: Connected to Arduino UNO A5 (SCL)
• SDA: Connected to Arduino UNO A4 (SDA)
• VCC: Connected to Arduino UNO 5V
• GND: Connected to Arduino UNO GND

HC-SR04 Ultrasonic Sensor

• VCC: Connected to Arduino UNO 5V
• TRIG: Connected to Arduino UNO D9
• ECHO: Connected to Arduino UNO D10
• GND: Connected to Arduino UNO GND

Arduino UNO

• 5V: Power supply to LCD, HC-SR04, Soil Moisture Module, and SG90 servo motor
• GND: Common ground for all components
• A4 (SDA): Connected to LCD SDA
• A5 (SCL): Connected to LCD SCL
• D9: Connected to HC-SR04 TRIG
• D10: Connected to HC-SR04 ECHO
• A0: Connected to Soil Moisture Module Analog
• D6: Connected to SG90 servo motor PWM

Soil Moisture Module

• VCC: Connected to Arduino UNO 5V
• Ground: Connected to Arduino UNO GND
• Analog: Connected to Arduino UNO A0
• positive: Connected to Soil Moisture Sensor VCC
• negative: Connected to Soil Moisture Sensor GND

Soil Moisture Sensor

• VCC: Connected to Soil Moisture Module positive
• GND: Connected to Soil Moisture Module negative
• SIG: Not connected in the provided net list

SG90 Servo Motor

• PWM: Connected to Arduino UNO D6
• 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:

}

Note: The provided code is a template and does not include specific functionality. It should be populated with initialization code in setup() and operational code in loop() to interact with the connected components.