Circuit Documentation

Summary

This circuit integrates an Arduino Nano microcontroller, a 0.96" OLED display, a DFRobot Capacitive Soil Moisture Sensor, a DC Motor, a 12V Battery, and an H-Bridge motor driver. The Arduino Nano serves as the central controller, interfacing with the OLED display for visual output, the soil moisture sensor for environmental monitoring, and the H-Bridge for motor control. The 12V battery powers the motor through the H-Bridge.

Component List

Arduino Nano

• Description: A compact microcontroller board based on the ATmega328P.
• Pins: D1/TX, D0/RX, RESET, GND, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11/MOSI, D12/MISO, VIN, 5V, A7, A6, A5, A4, A3, A2, A1, A0, AREF, 3V3, D13/SCK

0.96" OLED

• Description: A small OLED display module for visual output.
• Pins: GND, VDD, SCK, SDA

H-Bridge Motor Driver

• Description: A motor driver module for controlling DC motors.
• Pins: OUT4-Motor2, OUT3-Motor2, OUT2-Motor1, OUT1-Motor1, 5V, GND, 12V, IN3, IN1, IN2, IN4

DC Motor

• Description: A simple DC motor.
• Pins: pin 1, pin 2

12V Battery

• Description: A 12V power source.
• Pins: -, +

DFRobot Capacitive Soil Moisture Sensor (V1.0)

• Description: A sensor for measuring soil moisture levels.
• Pins: A, VCC, GND

Wiring Details

Arduino Nano

• GND connected to:

  • 0.96" OLED GND
  • DFRobot Capacitive Soil Moisture Sensor GND
  • 12V Battery -
  • H-Bridge Motor Driver GND

• 5V connected to:

  • 0.96" OLED VDD
  • DFRobot Capacitive Soil Moisture Sensor VCC

• A5 connected to:

  • 0.96" OLED SCK

• A4 connected to:

  • 0.96" OLED SDA

• D5 connected to:

  • H-Bridge Motor Driver IN2

• A0 connected to:

  • DFRobot Capacitive Soil Moisture Sensor A

0.96" OLED

• GND connected to:

  • Arduino Nano GND

• VDD connected to:

  • Arduino Nano 5V

• SCK connected to:

  • Arduino Nano A5

• SDA connected to:

  • Arduino Nano A4

H-Bridge Motor Driver

• GND connected to:

  • Arduino Nano GND
  • 12V Battery -

• 12V connected to:

  • 12V Battery +

• IN2 connected to:

  • Arduino Nano D5

• OUT2-Motor1 connected to:

  • DC Motor pin 2

• OUT1-Motor1 connected to:

  • DC Motor pin 1

DC Motor

• pin 1 connected to:

  • H-Bridge Motor Driver OUT1-Motor1

• pin 2 connected to:

  • H-Bridge Motor Driver OUT2-Motor1

12V Battery

• - connected to:

  • Arduino Nano GND
  • H-Bridge Motor Driver GND

• + connected to:

  • H-Bridge Motor Driver 12V

DFRobot Capacitive Soil Moisture Sensor (V1.0)

• GND connected to:

  • Arduino Nano GND

• VCC connected to:

  • Arduino Nano 5V

• A connected to:

  • Arduino Nano A0

Documented Code

Arduino Nano Code

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

}

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

}

This code is a basic template for the Arduino Nano. The setup() function is where you initialize your components and settings, and the loop() function is where the main logic of your program runs repeatedly.