4*4 Matrix Keypad Keyboard Module single sided pcb It can control both AC

It can control both AC and DC appliances such as Solenoids

Since the sensor already has an integrated A / D converter

The Arduino Pro Mini is a 3

up to 192 Kbytes of SRAM)

a processing circuit and LCD display

4*4 Matrix Keypad Keyboard Module single sided pcb It can control both ACThe 4 x 4 matrix keypad usually is used as input in a project. It has 16 keys in total, which means the same input values. The 4 x 4 Matrix Keypad Module is a matrix non encoded keypad consisting of 16 keys in parallel. The keys of each row and column are connected through the pins outside pin R1 R4 as labeled beside control the rows, when L1 L4, the columns. A 44 matrix keypad consisting of microswitch buttons. The module has four holes 3mm (M3)