Membrane 4X4 Matrix Keypad + Extras 2X5P – I2C interface for device

– I2C interface for device control and data transfer

Peak current: <30mA

steady and reliable

Process: high-quality green oil spray tin process

single power rail Vdd=Vdd_IO (solder link GS1)

Membrane 4X4 Matrix Keypad + Extras 2X5P – I2C interface for deviceThis Matrix Keypad 4 X 4 has 16 buttons, arranged in a telephone line 3x4 grid with a column of 4 characters (A, B, C, and D). The keys are connected into a matrix, hence only 8 microcontroller pins (4 columns and 4 rows) are required to scan the pad. It's made of a thin, flexible membrane material with an adhesive backing (just remove the paper) so you can attach it to nearly anything. The keys are connected into a matrix, so you only need 8