Circuit Documentation

Summary

This circuit involves an Arduino UNO microcontroller interfacing with various sensors and an LCD display. The sensors include a turbidity sensor and a pH meter. The circuit also includes resistors and a potentiometer for voltage regulation and signal conditioning. The LCD display is used to show the readings from the sensors.

Component List

1. Arduino UNO

   • Description: A microcontroller board based on the ATmega328P.
   • Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0, A1, A2, A3, A4, A5, SCL, SDA, AREF, D13, D12, D11, D10, D9, D8, D7, D6, D5, D4, D3, D2, D1, D0

2. Resistor (200 Ohms)

   • Description: A resistor with a resistance of 200 Ohms.
   • Pins: pin1, pin2

3. Potentiometer

   • Description: A variable resistor used to adjust voltage levels.
   • Pins: GND, Output, VCC

4. LCD Display (16 pin)

   • Description: A 16-pin LCD display used to show sensor readings.
   • Pins: VSS, VDD, VO, RS, R_W, E, DB0, DB1, DB2, DB3, DB4, DB5, DB6, DB7, A, K

5. Turbidity Sensor

   • Description: A sensor used to measure the turbidity of water.
   • Pins: OUT, VCC, GND

6. pH Meter V1.1

   • Description: A sensor used to measure the pH level of a solution.
   • Pins: DATA, VCC, GND

Wiring Details

Arduino UNO

• 5V: Connected to pin2 of a resistor, pin1 of another resistor, VCC of the potentiometer, and VSS of the LCD display.
• GND: Connected to GND of the pH meter, GND of the turbidity sensor, GND of the potentiometer, VDD, K, and R_W of the LCD display.
• A0: Connected to OUT of the turbidity sensor.
• A1: Connected to DATA of the pH meter.
• D13: Connected to RS of the LCD display.
• D12: Connected to E of the LCD display.
• D5: Connected to DB4 of the LCD display.
• D4: Connected to DB5 of the LCD display.
• D3: Connected to DB6 of the LCD display.
• D2: Connected to DB7 of the LCD display.

Resistor (200 Ohms)

• pin1: Connected to pin2 of another resistor, VCC of the potentiometer, and VSS of the LCD display.
• pin2: Connected to pin1 of another resistor, VCC of the pH meter, and A of the LCD display.

Potentiometer

• GND: Connected to GND of the Arduino UNO.
• Output: Connected to VO of the LCD display.
• VCC: Connected to pin1 of a resistor, pin2 of another resistor, and VSS of the LCD display.

LCD Display (16 pin)

• VSS: Connected to pin1 of a resistor, pin2 of another resistor, and VCC of the potentiometer.
• VDD: Connected to GND of the Arduino UNO.
• VO: Connected to Output of the potentiometer.
• RS: Connected to D13 of the Arduino UNO.
• R_W: Connected to GND of the Arduino UNO.
• E: Connected to D12 of the Arduino UNO.
• DB4: Connected to D5 of the Arduino UNO.
• DB5: Connected to D4 of the Arduino UNO.
• DB6: Connected to D3 of the Arduino UNO.
• DB7: Connected to D2 of the Arduino UNO.
• A: Connected to pin2 of a resistor.
• K: Connected to GND of the Arduino UNO.

Turbidity Sensor

• OUT: Connected to A0 of the Arduino UNO.
• VCC: Connected to pin1 of a resistor.
• GND: Connected to GND of the Arduino UNO.

pH Meter V1.1

• DATA: Connected to A1 of the Arduino UNO.
• VCC: Connected to pin1 of a resistor.
• GND: Connected to GND of the Arduino UNO.

Documented Code

Arduino UNO Code (sketch.ino)

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

Documentation (documentation.txt)

This documentation provides a comprehensive overview of the circuit, including a summary, detailed component list, wiring details, and the code used in the Arduino UNO microcontroller.