Circuit Documentation

Summary

The circuit in question appears to be a sensor and actuator network controlled by an Arduino UNO and an ESP8266 NodeMCU microcontroller. The circuit includes various sensors such as a DHT11 temperature and humidity sensor, a water sensor, a soil moisture module, and an LDR module for light detection. Actuators in the circuit include water pumps, a fan, and a servo motor. Additionally, there are multiple 5V relays to control the actuators and a 5V battery to provide power. The circuit is designed to interface the physical environment with the microcontrollers, which can be programmed to react to sensor inputs and control the actuators accordingly.

Component List

Microcontrollers

• ESP8266 NodeMCU: A Wi-Fi enabled microcontroller with multiple digital and analog pins.
• Arduino UNO: A microcontroller board based on the ATmega328P with digital and analog I/O pins.

Sensors

• DHT11: A sensor for measuring temperature and humidity.
• Water Sensor: A device for detecting the presence of water.
• Soil Moisture Module: A sensor for measuring the moisture content in soil.
• LDR Module 3 pin: A light-dependent resistor module for measuring light intensity.

Actuators

• 5V Relay: An electrically operated switch that allows controlling high power devices with low power signals.
• Water Pump: A device used to move water from one place to another.
• Fan: An electric device that creates airflow.
• Servo: A rotary actuator that allows for precise control of angular position.

Power Supply

• 5V Battery: A power source for the circuit.

Indicators

• LED Board: A board with LEDs that can be used for status indication.

Wiring Details

Microcontrollers

• ESP8266 NodeMCU

  • GND connected to Arduino UNO GND
  • RX connected to Arduino UNO D1
  • TX connected to Arduino UNO D0

• Arduino UNO

  • 5V powers DHT11 VCC, Water Sensor VCC, Soil Moisture Module VCC, LDR Module VCC, all 5V Relays VCC, and Servo VCC
  • GND connected to DHT11 GND, Water Sensor GND, Soil Moisture Module Ground, LDR Module GND, all 5V Relays GND, LED Board GND, and Servo GND
  • A0 connected to Soil Moisture Module Analog
  • A1 connected to Water Sensor Signal
  • A2 connected to LDR Module DO
  • D2 connected to DHT11 DATA
  • D3 to D7 control the 5V Relays and Servo PWM
  • D5 connected to LED Board VCC

Sensors

• DHT11

  • DATA connected to Arduino UNO D2

• Water Sensor

  • Signal connected to Arduino UNO A1

• Soil Moisture Module

  • Analog connected to Arduino UNO A0

• LDR Module 3 pin

  • DO connected to Arduino UNO A2

Actuators

• 5V Relays

  • In pins controlled by Arduino UNO D3, D4, D6
  • Common terminal connected to water pumps and fan
  • Normally Open connected to 5V battery positive

• Water Pumps

  • positive connected to 5V relay Common terminal
  • negative connected to 5V battery negative

• Fan

  • 5V connected to 5V relay Common terminal
  • GND connected to 5V battery negative

• Servo

  • PWM controlled by Arduino UNO D7

Power Supply

• 5V Battery
  • positive connected to 5V relays Normally Open
  • negative connected to water pumps negative, fan GND

Indicators

• LED Board
  • VCC controlled by Arduino UNO D5

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 code provided for the Arduino UNO is a template with empty setup and loop functions. Actual functionality needs to be implemented based on the desired behavior of the circuit.

ESP8266 NodeMCU Code

No code was provided for the ESP8266 NodeMCU.

Note: To fully utilize the ESP8266 NodeMCU, code should be written and uploaded to the microcontroller to handle Wi-Fi connectivity and interaction with the Arduino UNO and other components.