Membrane keyboard 16 buttons in a 4x4 matrix for Arduino

The matrix keyboard consists of 16 buttons (4 columns × 4 rows), including 10 numbers, 4 letters, * and #. The keyboard outputs are connected to the 8-pin PLS-8 connector (the output pitch is standard, 2.54 mm). The cable between the keyboard and the connector is flat, flexible, 8.6 cm long.

The matrix membrane keyboard can be fixed on a flat surface due to the self-adhesive backing.

It is used to create combination locks, control various devices, smart home elements and robots, etc.

In addition to Arduino, it is also used in circuits based on AVR, PIC, ARM and other microcontrollers.