Circuit Documentation

Summary

This document provides a detailed overview of a circuit designed to interface with various sensors using an ESP32 microcontroller. The circuit includes a pH meter, a turbidity sensor, and a DHT22 temperature and humidity sensor. The ESP32 microcontroller reads data from these sensors and processes it accordingly.

Component List

PH Meter

• Description: Measures the pH level of a solution.
• Pins: Signal, VCC, GND

Turbidity Sensor

• Description: Measures the turbidity (cloudiness) of a liquid.
• Pins: OUT, VCC, GND

DHT22

• Description: Measures temperature and humidity.
• Pins: +, Out, -

ESP32 (30 pin)

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

Wiring Details

PH Meter

• Signal connected to ESP32 D34
• VCC connected to ESP32 3V3
• GND connected to ESP32 GND

Turbidity Sensor

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

DHT22

• Out connected to ESP32 D4
• + connected to ESP32 3V3
• - connected to ESP32 GND

ESP32 (30 pin)

• D34 connected to PH Meter Signal
• D35 connected to Turbidity Sensor OUT
• D4 connected to DHT22 Out
• 3V3 connected to PH Meter VCC, Turbidity Sensor VCC, DHT22 +
• GND connected to PH Meter GND, Turbidity Sensor GND, DHT22 -

Code

No code is provided for this circuit.

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This documentation provides a comprehensive overview of the circuit, including a summary, detailed component list, wiring details, and code section. This should help in understanding and replicating the circuit effectively.