Arduino Assignment 2 — Beeping Countdown

This is my submission for Assignment 2 in the Programming C++ for Engineers Using Arduino course at [Ghana Communication Technology University].

What this project does

Hardware used

A 7-segment display counts down from 9 to 0. On each step, a passive buzzer plays a short beep. When the countdown reaches 0, the buzzer plays a longer tone to signal completion.

• Arduino Uno- 1 x passive buzzer (piezo)- 1 x single-digit 7-segment display (common cathode)- 1 x 220 ohm resistor (on the COM pin)- Breadboard and jumper wires

Concepts demonstrated

• The tone() and noTone() functions- Passive vs active buzzers- 7-segment display wiring (common cathode)- 2D arrays for digit patterns (lookup table)- Functions with parameters- while and for loops- Serial Monitor output

How to run it

1. Wire the buzzer to pin 8.
2. Wire the 7-segment segments a-g to Arduino pins 2, 3, 4, 5, 6, 7, 9 (direct wires, no resistors).
3. Connect the COM pin of the display to GND via a 220 ohm resistor.
4. Open the .ino file in the Arduino IDE.
5. Select Tools > Board > Arduino Uno and the correct Port.
6. Click Upload.

Author

[Henry Akagbo Kwame] - [2526401306]