Circuit Documentation

Summary

This circuit integrates various sensors and a relay module with an Arduino UNO R4 WiFi microcontroller. The sensors include a BME/BMP280 for atmospheric measurements, a Modulo Sensor PH for pH level detection, and an MKE-S01 Ultrasonic Distance Sensor for measuring distances. A 4-channel relay module is used to control external loads. The Arduino UNO R4 WiFi serves as the central processing unit, interfacing with the sensors and controlling the relay module based on sensor inputs.

Component List

Arduino UNO R4 WiFi

• Microcontroller board with WiFi capability.
• Provides digital and analog I/O pins.
• Powers the sensors and relay module.
• Processes sensor data and controls the relay module.

Modulo Sensor PH

• Sensor for measuring the pH level of a solution.
• Outputs an analog signal corresponding to the pH level.

BME/BMP280

• Environmental sensor for measuring temperature, pressure, and humidity.
• Communicates with the Arduino via I2C protocol.

MKE-S01 Ultrasonic Distance Sensor

• Sensor for measuring distances using ultrasonic waves.
• Provides trigger and echo pins for interfacing with the Arduino.

4 Channel Relay Module

• Module with 4 relays to control up to four different loads.
• Each relay has normally open (N.O.), common (COM), and normally closed (N.C.) terminals.
• Controlled by digital signals from the Arduino.

Wiring Details

Arduino UNO R4 WiFi

• 5V pin connected to the power supply pins of BME/BMP280, Modulo Sensor PH, MKE-S01 Ultrasonic Distance Sensor, and 4 channel relay module.
• GND pin connected to the ground pins of BME/BMP280, Modulo Sensor PH, MKE-S01 Ultrasonic Distance Sensor, and 4 channel relay module.
• A3 pin connected to the analog output of the Modulo Sensor PH.
• A4 (SDA) pin connected to the SDA pin of BME/BMP280.
• A5 (SCL) pin connected to the SCL pin of BME/BMP280.
• D0/RX pin connected to the TRIG pin of MKE-S01 Ultrasonic Distance Sensor.
• D1/TX pin connected to the ECHO pin of MKE-S01 Ultrasonic Distance Sensor.
• D2 pin connected to the IN 4 pin of the 4 channel relay module.
• D3 pin connected to the IN 3 pin of the 4 channel relay module.
• D4 pin connected to the IN 2 pin of the 4 channel relay module.
• D5 pin connected to the IN 1 pin of the 4 channel relay module.

Modulo Sensor PH

• + pin connected to the 5V power supply.
• - pin connected to the ground.
• A pin connected to the A3 pin of the Arduino UNO R4 WiFi.

BME/BMP280

• VIN pin connected to the 5V power supply.
• GND pin connected to the ground.
• SDA pin connected to the A4 (SDA) pin of the Arduino UNO R4 WiFi.
• SCL pin connected to the A5 (SCL) pin of the Arduino UNO R4 WiFi.

MKE-S01 Ultrasonic Distance Sensor

• 5V pin connected to the 5V power supply.
• GND pin connected to the ground.
• TRIG pin connected to the D0/RX pin of the Arduino UNO R4 WiFi.
• ECHO pin connected to the D1/TX pin of the Arduino UNO R4 WiFi.

4 Channel Relay Module

• VCC+ pin connected to the 5V power supply.
• VCC- (GND) pin connected to the ground.
• IN 1 pin connected to the D5 pin of the Arduino UNO R4 WiFi.
• IN 2 pin connected to the D4 pin of the Arduino UNO R4 WiFi.
• IN 3 pin connected to the D3 pin of the Arduino UNO R4 WiFi.
• IN 4 pin connected to the D2 pin of the Arduino UNO R4 WiFi.

Documented Code

Arduino UNO R4 WiFi 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 is a template and does not include specific functionality. It needs to be completed with the logic for sensor readings, data processing, and relay control based on the requirements of the circuit's application.