Counting 0–9 on a Seven Segment Display with Arduino Mega (Bare-Metal Programming)

Aug 17, 2025 · 2 min read · Seven-segment displays are one of the simplest and most effective ways to show numbers in embedded systems. In this project, I used an Arduino Mega 2560 with a common cathode 7-segment display and programmed it using bare-metal C (direct register acc...