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…
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…