Black 4X4 Keyboard

The Black 4X4 Keyboard is a 4×4 matrix keypad with 16 keys arranged in 4 rows and 4 columns. Instead of one wire per key it uses only 8 connections, and the microcontroller finds the pressed key by scanning the rows and columns. It is a simple way to add number entry, menus or passcodes to Arduino, ESP32 and other microcontroller projects.

Black 4X4 Keyboard Specifications

• Layout: 4 × 4 matrix
• Keys: 16
• Connections: 8 (4 rows + 4 columns)
• Colour: black
• Type: passive switch matrix, read with digital input pins

Black 4X4 Keyboard Applications

• Door locks and passcode entry systems
• Calculators and number input for projects
• Menu navigation with LCD or OLED displays
• Vending machine, game and quiz projects
• Learning matrix scanning in STEM classes

What's in the Box

• 1 × black 4×4 matrix keypad

Tip: Connect the 8 pins to 8 digital pins and use the Arduino Keypad library, listing the row and column pins in the same order as the keypad. If the keys come out swapped, change the pin order in your code rather than rewiring.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.