Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes various sensors and a relay module connected to an ESP32 microcontroller. The circuit is designed to monitor environmental parameters such as temperature, humidity, soil moisture, light intensity, and pH levels. Additionally, it includes a relay module for controlling external devices.

Component List

1. DHT11

   • Description: Temperature and Humidity Sensor
   • Pins: GND, DATA, VCC

2. ESP32

   • Description: Microcontroller with Wi-Fi and Bluetooth capabilities
   • Pins: EN, VP, VN, D34, D35, D32, D33, D25, D26, D27, D14, D12, D13, GND, VIN, 3V3, D15, D2, D4, RX2, TX2, D5, D18, D19, D21, RX0, TX0, D22, D23, BOOT

3. Soil Moisture Module

   • Description: Module for measuring soil moisture levels
   • Pins: An, Di, Gnd, VCC, +, -

4. LDR Sensor

   • Description: Light Dependent Resistor for measuring light intensity
   • Pins: Ana, Digi, Gnd, VCC

5. PH Meter

   • Description: Sensor for measuring pH levels
   • Pins: Signal, VCC, GND

6. Relay 4 Channel 5V

   • Description: Relay module for controlling external devices
   • Pins: GND, IN1, IN2, IN3, IN4, VCC, COM1, COM2, COM3, COM4, NO1, NO2, NO3, NO4, NC1, NC2, NC3, NC4

7. Soil Moisture Sensor

   • Description: Sensor for measuring soil moisture
   • Pins: +, -

Wiring Details

DHT11

• GND connected to ESP32 GND
• DATA connected to ESP32 D25
• VCC connected to ESP32 3V3

ESP32

• GND connected to DHT11 GND, Soil Moisture Module Gnd, LDR Sensor Gnd, PH Meter GND, Relay 4 Channel 5V GND
• D25 connected to DHT11 DATA
• 3V3 connected to DHT11 VCC, Soil Moisture Module VCC, LDR Sensor VCC, PH Meter VCC, Relay 4 Channel 5V VCC
• D34 connected to Soil Moisture Module An
• D35 connected to PH Meter Signal
• D32 connected to LDR Sensor Ana
• D19 connected to Relay 4 Channel 5V IN4
• D21 connected to Relay 4 Channel 5V IN3
• D22 connected to Relay 4 Channel 5V IN2
• D23 connected to Relay 4 Channel 5V IN1

Soil Moisture Module

• Gnd connected to ESP32 GND
• VCC connected to ESP32 3V3
• An connected to ESP32 D34
• + connected to Soil Moisture Sensor +
• - connected to Soil Moisture Sensor -

LDR Sensor

• Gnd connected to ESP32 GND
• VCC connected to ESP32 3V3
• Ana connected to ESP32 D32

PH Meter

• GND connected to ESP32 GND
• VCC connected to ESP32 3V3
• Signal connected to ESP32 D35

Relay 4 Channel 5V

• GND connected to ESP32 GND
• VCC connected to ESP32 3V3
• IN4 connected to ESP32 D19
• IN3 connected to ESP32 D21
• IN2 connected to ESP32 D22
• IN1 connected to ESP32 D23

Soil Moisture Sensor

• + connected to Soil Moisture Module +
• - connected to Soil Moisture Module -

Code

No code provided for this circuit.

---

This document provides a comprehensive overview of the circuit, including a summary, component list, wiring details, and code section. Each component is described, and the wiring details are provided to ensure proper connections.