Demystifying a 5x4 keypad matrix HC-35
On your favorite selling sites for cheap electronics you may find a nice looking keypad/push button matrix with 16 black buttons arranged in a 4x4 matrix, another row of 4…
AVR-Dx microcontrollers
History When i started this blog 15 years ago, one of my first entries from May 2010 was about my first steps with Atmel microcontrollers. Since then these microcontrollers have…