Smart Keypad Board helps us to interface 4×3 and 4×4 membrane button keypads with the systems where there is a shortage of GPIO pins to interface these keypads. This board has ATmega328p micro-controller which takes the input from the Keypad, interprets which key is pressed on the keypad and sends it through UART and I2C protocols.
- Operating voltage: 5V
- Size: 50mm x 27mm
Manual contains all required information for interfacing along with example codes.