We need a keypad for password input and manually lock our customised door locker. It consists of 16 keys (soft switch) 4 keys in Rows (R1, R2, R3, R4) and 4 keys in Columns (C1, C2, C3, C4) when a key ...

A keypad is one of the most commonly used input devices in microprocessor applications. In a standard keypad wired as an X-Y switch matrix, normally-open switches connect a row to a column when ...

Connect the 4x4 keypad matrix to the Arduino according to the pin configuration specified in the code. The Arduino will act as a keyboard, sending keystrokes to the connected computer based on the ...

Watch the video below to learn more about his Arduino-based portable keypad that connects to your Arduino development board and offers the complete alphabet, numbers 0-9 as well as several commands.

Arduino powered 5-key keypad includes a rotary encoder There was a time when people were happy to interact with their computer with a standard keyboard and mouse.