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Arduino Mega 2560-Based Digital Counter with Pushbuttons and Seven Segment Displays

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Circuit Documentation

Summary

This circuit is designed to interface with a Mega 2560 R3 microcontroller to control a seven-segment display using multiple pushbuttons. The pushbuttons are used to increment, decrement, and reset the displayed number. The circuit also includes resistors to limit current and transistors to drive the seven-segment displays.

Component List

  1. Pushbutton

    • Description: A simple pushbutton switch.
    • Pins: Pin 1 (in), Pin 2 (in), Pin 3 (out), Pin 4 (out)

  2. Seven Segment Display (Wokwi Compatible)

    • Description: A seven-segment display compatible with Wokwi.
    • Pins: G, F, COM.2, B, A, E, D, COM.1, C, DP

  3. Resistor

    • Description: A resistor with a resistance of 220 Ohms.
    • Pins: pin1, pin2

  4. NPN Transistor (ECB)

    • Description: A standard NPN transistor.
    • Pins: emitter, collector, base

  5. Mega 2560 R3

    • Description: A microcontroller board based on the ATmega2560.
    • Pins: ICSP port GND, ICSP port Reset, ICSP port MOSI, ICSP port SCK, ICSP port +VCC, ICSP port MISO, SCL, SDA, AREF, GND, D13 (PWM), D12 (PWM), D11 (PWM), D10 (PWM), D9 (PWM), D8 (PWM), D7 (PWM), D6 (PWM), D5 (PWM), D4 (PWM), D3 (PWM), D2 (PWM), D1 (TX0), D0 (RX0), D14 (TX3), D15 (RX3), D16 (TX2), D17 (RX2), D18 (TX1), D19 (RX1), D20 (SDA), D21 (SCL), + 5VCC, D22, D23, D24, D25, D26, D27, D28, D29, D30, D31, D32, D33, D34, D35, D36, D37, D38, D39, D40, D41, D42, D43, D44, D45, D46, D47, D48, D49, D50, D51, D52, D53, NC, IOREF, Reset, +3V3, +VCC IN, A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, USB port

Wiring Details

Pushbutton

Pushbutton

Pushbutton

Resistor

Resistor

Resistor

Resistor

Resistor

Resistor

Resistor

Resistor

Resistor

NPN Transistor (ECB)

Mega 2560 R3

Code Documentation

//Tanımlamalar
const int d1A =12;
const int d1B =13;
const int d1C =5;
const int d1D =6;
const int d1E =7;
const int d1F =11;
const int d1G =10;

const int onlar1Bas =8;
const int birler1Bas =9;

const int btn1Up =A0;
const int btn1Down =A1;
const int reset1Buton =A2;

int numberValue =0;
char statusBtnUp = '1';
char statusBtnDown = '1';
char statusBtnReset ='1';

void setup() {
  showNumber (numberValue);
  pinMode (d1A, OUTPUT);
  pinMode (d1B, OUTPUT);
  pinMode (d1C, OUTPUT);
  pinMode (d1D, OUTPUT);
  pinMode (d1E, OUTPUT);
  pinMode (d1F, OUTPUT);
  pinMode (d1G, OUTPUT);

  pinMode (onlar1Bas, OUTPUT);
  pinMode (birler1Bas, OUTPUT);

  pinMode (btn1Up, INPUT_PULL