Circuit Documentation

Summary

This circuit involves an Arduino Mega 2560 microcontroller, an LCD 16x2 display, and a trimmer potentiometer. The Arduino Mega 2560 is used to control the LCD display, which is used to show information. The trimmer potentiometer is used to adjust the contrast of the LCD display.

Component List

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.
• Purpose in Circuit: Acts as the main controller for the circuit.

LCD 16x2 (Wokwi Compatible)

• Description: A 16x2 character LCD display.
• Pins: VSS, VDD, V0, RS, RW, E, D0-D7, A, K.
• Purpose in Circuit: Displays information controlled by the Arduino Mega 2560.

Trimmer Potentiometer

• Description: A variable resistor used to adjust the contrast of the LCD.
• Pins: leg1, wiper, leg2.
• Properties: Resistance: 10k Ohms.
• Purpose in Circuit: Adjusts the contrast of the LCD display.

Wiring Details

Arduino Mega 2560

• 5V is connected to:

  • LCD 16x2 (Wokwi Compatible): VDD, A
  • Trimmer Potentiometer: leg1

• GND is connected to:

  • LCD 16x2 (Wokwi Compatible): VSS, RW, K
  • Trimmer Potentiometer: leg2

• D2 PWM is connected to:

  • LCD 16x2 (Wokwi Compatible): D7

• D3 PWM is connected to:

  • LCD 16x2 (Wokwi Compatible): D6

• D4 PWM is connected to:

  • LCD 16x2 (Wokwi Compatible): D5

• D5 PWM is connected to:

  • LCD 16x2 (Wokwi Compatible): D4

• D6 PWM is connected to:

  • LCD 16x2 (Wokwi Compatible): E

• D7 PWM is connected to:

  • LCD 16x2 (Wokwi Compatible): RS

LCD 16x2 (Wokwi Compatible)

• VDD is connected to:

  • Arduino Mega 2560: 5V

• A is connected to:

  • Arduino Mega 2560: 5V

• VSS is connected to:

  • Arduino Mega 2560: GND

• RW is connected to:

  • Arduino Mega 2560: GND

• K is connected to:

  • Arduino Mega 2560: GND

• D7 is connected to:

  • Arduino Mega 2560: D2 PWM

• D6 is connected to:

  • Arduino Mega 2560: D3 PWM

• D5 is connected to:

  • Arduino Mega 2560: D4 PWM

• D4 is connected to:

  • Arduino Mega 2560: D5 PWM

• E is connected to:

  • Arduino Mega 2560: D6 PWM

• RS is connected to:

  • Arduino Mega 2560: D7 PWM

• V0 is connected to:

  • Trimmer Potentiometer: wiper

Trimmer Potentiometer

• leg1 is connected to:

  • Arduino Mega 2560: 5V

• leg2 is connected to:

  • Arduino Mega 2560: GND

• wiper is connected to:

  • LCD 16x2 (Wokwi Compatible): V0

Documented Code

Arduino Mega 2560 Code (sketch.ino)

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

}

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

}

Additional Documentation (documentation.txt)