Wiki - Other Sensors - Keyboard

4x4 3x4 keyboard connection diagram.

Example: Sending Key Codes from Keyboard to Serial Monitor.

Sample program:

Download example: file.ardublock | Open Online ArduBlock

Video:

Components from Aliexpress

LED

Button

Resistor

Potentiometer

IButton DS1990

FRM 10 - A

Magnetic lock

Power Supply

Scales

Keyboard

RFID module

Buzzer

Arduino Pro Mini

Arduino Nano

Arduino Uno

Arduino Uno R3

Arduino Mega

Arduino Leonardo

Bread board

Training set