PORTB maps to Arduino digital pins 8 to 13 The two high bits (6 & 7) map to the crystal pins and are not usable DDRB - The Port B Data Direction Register - read/write PORTB - The Port B Data Register ...

A professional-grade, debounce-handled button-controlled LED system built on Arduino Uno. Demonstrates core embedded firmware concepts including modular code architecture, non-blocking timing, edge ...

Tilt sensors are essential components in security alarm systems today. Standalone tilt sensors sense tilt angle or movement. Tilt sensors can be implemented using mercury and roller ball technology, ...