Circuit Documentation

Summary of the Circuit

The circuit in question consists of two primary components: an ESP32 microcontroller with a 30-pin configuration and a PH sensor module. The ESP32 is a versatile microcontroller with Wi-Fi and Bluetooth capabilities, often used in IoT applications. The PH sensor module is designed to measure the acidity or alkalinity of a solution. In this circuit, the ESP32 is interfaced with the PH sensor module to presumably read PH levels and process the data accordingly.

Component List

ESP32 (30 pin)

• Description: A 30-pin microcontroller with Wi-Fi and Bluetooth capabilities.
• Purpose: Acts as the central processing unit of the circuit, interfacing with the PH sensor module to read and process PH levels.
• 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.

Modulo Sensor PH

• Description: A sensor module designed to measure the PH level of a solution.
• Purpose: To provide PH level readings to the ESP32 for processing.
• Pins: -, +, A, SON.

Wiring Details

ESP32 (30 pin)

• D25: Connected to the PH sensor module's A pin for analog signal input.
• GND: Connected to the PH sensor module's - pin to provide a common ground reference.
• Vin: Connected to the PH sensor module's + pin to supply power.

Modulo Sensor PH

• A (Analog Output): Connected to the ESP32's D25 pin to send the analog signal representing the PH level.
• - (Ground): Connected to the ESP32's GND pin to establish a common ground.
• + (Power Input): Connected to the ESP32's Vin pin to receive power.

Documented Code

No code has been provided for the microcontroller. Typically, the code would be responsible for initializing the ESP32's hardware peripherals, reading the analog signal from the PH sensor module, converting that signal to a PH value, and then taking appropriate action such as displaying the value or sending it over a network.

To complete the documentation, the code would need to be provided, and it would include sections such as:

• Initialization of the ESP32's analog-to-digital converter (ADC).
• Configuration of the Wi-Fi or Bluetooth modules, if networking is required.
• A main loop that reads the PH sensor value at regular intervals.
• Functions to convert the raw ADC value to a PH level.
• Error handling and debugging information.

Since the code is not available, these sections cannot be documented at this time.