Circuit Documentation

Summary

The circuit in question is designed to interface an Arduino Nano with a variety of sensors and modules, including a Bluetooth HC-06 module, a DHT11 temperature and humidity sensor, a capacitive soil moisture sensor, two LEDs (red and green), a water pump, and a motor driver (L9110). The circuit is powered by a solar charger power bank, which provides a sustainable energy source. The Arduino Nano serves as the central processing unit, controlling the sensors, LEDs, and the water pump through the motor driver. Communication with external devices is facilitated by the Bluetooth module.

Component List

Arduino Nano

• Microcontroller board based on the ATmega328P
• Provides digital and analog I/O pins
• Used for controlling and processing data from sensors and modules

Bluetooth HC-06

• Bluetooth module for wireless communication
• Interfaces with the Arduino for remote data transmission and control

DHT11

• Temperature and humidity sensor
• Provides environmental data to the Arduino

Capacitive Soil Moisture Sensor V1.2

• Soil moisture sensor
• Measures the moisture level in the soil and provides data to the Arduino

LED: Two Pin (red)

• Red indicator LED
• Used for visual signaling or status indication

LED: Two Pin (green)

• Green indicator LED
• Used for visual signaling or status indication

Water Pump

• Electric pump for water circulation
• Controlled by the Arduino through the motor driver

L9110

• Motor driver module
• Drives the water pump based on signals from the Arduino

Solar Charger Power Bank

• Power supply for the circuit
• Provides a renewable energy source via solar power

Wiring Details

Arduino Nano

• 5V connected to the positive terminal of the Solar Charger Power Bank
• GND connected to the negative terminal of the Solar Charger Power Bank
• D2 connected to DATA pin of DHT11
• D3 connected to anode of the red LED
• D5 connected to anode of the green LED
• D9 connected to A-IA of L9110
• D10 connected to A-IB of L9110
• D11/MOSI connected to RXD of Bluetooth HC-06
• D12/MISO connected to TXD of Bluetooth HC-06
• A0 connected to AOUT of Capacitive Soil Moisture Sensor V1.2

Bluetooth HC-06

• VCC connected to the positive terminal of the Solar Charger Power Bank
• GND connected to the negative terminal of the Solar Charger Power Bank
• TXD connected to D12/MISO of Arduino Nano
• RXD connected to D11/MOSI of Arduino Nano

DHT11

• VCC connected to the positive terminal of the Solar Charger Power Bank
• GND connected to the negative terminal of the Solar Charger Power Bank
• DATA connected to D2 of Arduino Nano

Capacitive Soil Moisture Sensor V1.2

• VCC connected to the positive terminal of the Solar Charger Power Bank
• GND connected to the negative terminal of the Solar Charger Power Bank
• AOUT connected to A0 of Arduino Nano

LED: Two Pin (red)

• anode connected to D3 of Arduino Nano
• cathode connected to the negative terminal of the Solar Charger Power Bank

LED: Two Pin (green)

• anode connected to D5 of Arduino Nano
• cathode connected to the negative terminal of the Solar Charger Power Bank

Water Pump

• positive connected to MOTOR A-A of L9110
• negative connected to MOTOR A-B of L9110

L9110

• VCC connected to the positive terminal of the Solar Charger Power Bank
• GND connected to the negative terminal of the Solar Charger Power Bank
• A-IA connected to D9 of Arduino Nano
• A-IB connected to D10 of Arduino Nano
• MOTOR A-A connected to positive of the water pump
• MOTOR A-B connected to negative of the water pump

Solar Charger Power Bank

• + connected to 5V of Arduino Nano, VCC of DHT11, VCC of Capacitive Soil Moisture Sensor V1.2, VCC of Bluetooth HC-06, and VCC of L9110
• - connected to GND of Arduino Nano, GND of DHT11, GND of Capacitive Soil Moisture Sensor V1.2, GND of Bluetooth HC-06, GND of L9110, cathode of the red LED, and cathode of the green LED

Documented Code

Arduino Nano 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 is expected that the user will fill in the setup and loop functions with the necessary code to control the components as per the circuit design.