Circuit Documentation

Summary

This circuit involves an Arduino Mega 2560 microcontroller interfacing with various components including a DS1307 RTC, an LCD display, a water level sensor, multiple LEDs, resistors, and a rotary potentiometer. The circuit is designed to read water levels, display information on an LCD, and indicate statuses using LEDs.

Component List

1. Arduino Mega 2560

   • Description: A microcontroller board based on the ATmega2560.
   • Pins: IOREF, RESET, 3V3, 5V, GND, VIN, A0-A15, D0-D53, PWM pins, AREF, SDA, SCL.

2. Water Level Sensor

   • Description: A sensor to measure the water level.
   • Pins: SIG, VCC, GND.

3. LED: Two Pin (red)

   • Description: A red LED.
   • Pins: Cathode, Anode.

4. LED: Two Pin (green)

   • Description: A green LED.
   • Pins: Cathode, Anode.

5. LED: Two Pin (blue)

   • Description: A blue LED.
   • Pins: Cathode, Anode.

6. LED: Two Pin (yellow)

   • Description: A yellow LED.
   • Pins: Cathode, Anode.

7. Resistor (200 Ohms)

   • Description: A resistor with a resistance of 200 Ohms.
   • Pins: Pin1, Pin2.

8. DS1307 RTC (Wokwi Compatible)

   • Description: A real-time clock module.
   • Pins: GND, 5V, SDA, SCL, SQW.

9. LCD Display (16 pin)

   • Description: A 16-pin LCD display.
   • Pins: VSS, VDD, VO, RS, R_W, E, DB0-DB7, A, K.

10. Rotary Potentiometer (10k Ohms)

    • Description: A rotary potentiometer with a resistance of 10k Ohms.
    • Pins: Leg1, Wiper, Leg2.

Wiring Details

Arduino Mega 2560

• 5V connected to:

  • DS1307 RTC (5V)
  • Resistor (Pin1)
  • Rotary Potentiometer (Leg1)
  • LCD Display (VDD, A)
  • Water Level Sensor (VCC)

• GND connected to:

  • DS1307 RTC (GND)
  • Red LED (Anode)
  • Green LED (Anode)
  • Blue LED (Anode)
  • Yellow LED (Anode)
  • Rotary Potentiometer (Leg2)
  • LCD Display (VSS, R_W, K)
  • Water Level Sensor (GND)

• D21/SCL connected to DS1307 RTC (SCL)

• D20/SDA connected to DS1307 RTC (SDA)

• D24 connected to:

  • Resistor (Pin2)
  • Red LED (Cathode)

• D26 connected to:

  • Resistor (Pin2)
  • Green LED (Cathode)

• D22 connected to:

  • Resistor (Pin2)
  • Blue LED (Cathode)

• D28 connected to:

  • Resistor (Pin2)
  • Yellow LED (Cathode)

• A8 connected to Water Level Sensor (SIG)

• D5 PWM connected to LCD Display (DB4)

• D6 PWM connected to LCD Display (DB5)

• D7 PWM connected to LCD Display (DB6)

• D8 PWM connected to LCD Display (DB7)

DS1307 RTC (Wokwi Compatible)

• 5V connected to Arduino Mega 2560 (5V)
• GND connected to Arduino Mega 2560 (GND)
• SCL connected to Arduino Mega 2560 (D21/SCL)
• SDA connected to Arduino Mega 2560 (D20/SDA)

Water Level Sensor

• VCC connected to Arduino Mega 2560 (5V)
• GND connected to Arduino Mega 2560 (GND)
• SIG connected to Arduino Mega 2560 (A8)

LED: Two Pin (red)

• Anode connected to Arduino Mega 2560 (GND)
• Cathode connected to Resistor (Pin2) and Arduino Mega 2560 (D24)

LED: Two Pin (green)

• Anode connected to Arduino Mega 2560 (GND)
• Cathode connected to Resistor (Pin2) and Arduino Mega 2560 (D26)

LED: Two Pin (blue)

• Anode connected to Arduino Mega 2560 (GND)
• Cathode connected to Resistor (Pin2) and Arduino Mega 2560 (D22)

LED: Two Pin (yellow)

• Anode connected to Arduino Mega 2560 (GND)
• Cathode connected to Resistor (Pin2) and Arduino Mega 2560 (D28)

Resistor (200 Ohms)

• Pin1 connected to Arduino Mega 2560 (5V)
• Pin2 connected to:
  • Red LED (Cathode) and Arduino Mega 2560 (D24)
  • Green LED (Cathode) and Arduino Mega 2560 (D26)
  • Blue LED (Cathode) and Arduino Mega 2560 (D22)
  • Yellow LED (Cathode) and Arduino Mega 2560 (D28)

LCD Display (16 pin)

• VSS connected to Arduino Mega 2560 (GND)
• VDD connected to Arduino Mega 2560 (5V)
• VO connected to Rotary Potentiometer (Wiper)
• R_W connected to Arduino Mega 2560 (GND)
• DB4 connected to Arduino Mega 2560 (D5 PWM)
• DB5 connected to Arduino Mega 2560 (D6 PWM)
• DB6 connected to Arduino Mega 2560 (D7 PWM)
• DB7 connected to Arduino Mega 2560 (D8 PWM)
• A connected to Arduino Mega 2560 (5V)
• K connected to Arduino Mega 2560 (GND)

Rotary Potentiometer (10k Ohms)

• Leg1 connected to Arduino Mega 2560 (5V)
• Leg2 connected to Arduino Mega 2560 (GND)
• Wiper connected to LCD Display (VO)

Documented Code

Arduino Mega 2560 Code

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

}

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

}

This code is a basic template for the Arduino Mega 2560. The setup() function is used to initialize any settings or configurations, and the loop() function contains the main code that runs repeatedly.