Circuit Documentation

Summary

The circuit in question is designed to interface various sensors and peripherals with an ESP32 microcontroller. The sensors include a rain sensor, an LDR (light-dependent resistor), an MQ-135 air quality sensor, a wind direction sensor, and an anemometer. Additionally, the circuit includes a 20x4 LCD with I2C interface for display purposes, a DHT22 temperature and humidity sensor, a solar charge controller, a solar panel, and a UPS battery for power management. The ESP32 serves as the central processing unit, collecting data from the sensors and managing the display.

Component List

ESP32 (30 pin)

• Microcontroller with a variety of digital and analog pins, used as the main processing unit of the circuit.

Lcd 20x4 i2c

• An alphanumeric liquid crystal display with an I2C interface, used for displaying information.

DHT22 (Wokwi Compatible)

• A sensor for measuring temperature and humidity.

LDR

• A light-dependent resistor, used for measuring light intensity.

MQ-135 SENSOR AIR QUALITY

• A sensor used for detecting a wide range of gases, including NH3, NOx, alcohol, benzene, smoke, and CO2.

RAIN SENSOR

• A sensor used for detecting rainwater.

WindDirectionSensor

• A sensor used for determining the direction of the wind.

Anemometer

• A device used for measuring wind speed.

Solar Charge Controller

• A device that controls the charging of a battery from a solar panel and provides load control.

Solar Panel

• A photovoltaic panel used for converting solar energy into electrical energy.

UPS BATTERY

• A battery used for providing uninterrupted power supply.

Wiring Details

ESP32 (30 pin)

• D35 connected to RAIN SENSOR AO
• D32 connected to WindDirectionSensor Data
• D33 connected to LDR A0
• GND connected to common ground
• Vin connected to Solar Charge Controller Load +
• D22 connected to Lcd 20x4 i2c SCL
• D21 connected to Lcd 20x4 i2c SCA
• D5 connected to DHT22 (Wokwi Compatible) SDA
• D4 connected to MQ-135 SENSOR AIR QUALITY A0
• D2 connected to Anemometer signal
• 3V3 connected to common VCC

Lcd 20x4 i2c

• GND connected to common ground
• 5v connected to Solar Charge Controller Load +

DHT22 (Wokwi Compatible)

• SDA connected to ESP32 (30 pin) D5
• GND connected to common ground
• VCC connected to common VCC

LDR

• A0 connected to ESP32 (30 pin) D33
• GND connected to common ground
• VCC connected to common VCC

MQ-135 SENSOR AIR QUALITY

• A0 connected to ESP32 (30 pin) D4
• GND connected to common ground
• VCC connected to common VCC

RAIN SENSOR

• AO connected to ESP32 (30 pin) D35
• GRD connected to common ground
• VCC connected to Solar Charge Controller Load +

WindDirectionSensor

• Data connected to ESP32 (30 pin) D32
• GND connected to common ground
• VIN connected to Solar Charge Controller Load +

Anemometer

• signal connected to ESP32 (30 pin) D2
• gnd connected to common ground
• vcc connected to Solar Charge Controller Load +

Solar Charge Controller

• Solar Cell + connected to Solar Panel +
• Solar Cell - connected to Solar Panel -
• Battery + connected to UPS BATTERY VCC
• Battery - connected to UPS BATTERY GND
• Load + connected to common VCC
• Load - connected to common ground

Solar Panel

• + connected to Solar Charge Controller Solar Cell +
• - connected to Solar Charge Controller Solar Cell -

UPS BATTERY

• GND connected to Solar Charge Controller Battery -
• VCC connected to Solar Charge Controller Battery +

Documented Code

Anemometer 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 for the anemometer is a template with no specific functionality. It needs to be populated with the actual logic for reading the anemometer data and possibly transmitting it to the ESP32 for processing.

Anemometer Documentation (documentation.txt)

No code was provided for this file.

End of Documentation