4×4 Matrix Membrane Keypad 16-Key Button Switch Keyboard Control Panel for Arduino DIY Projects

Description

The 4×4 Matrix Membrane Keypad is a compact and lightweight 16-button input device designed for Arduino, ESP32, Raspberry Pi, STM32, and other microcontroller projects. It features 16 tactile membrane keys arranged in a 4-row by 4-column matrix, allowing multiple buttons to be read using only 8 signal lines. The keypad includes the standard key layout: 1, 2, 3, A 4, 5, 6, B 7, 8, 9, C *, 0, #, D Its flexible membrane design makes it thin, easy to mount, and suitable for embedding into control panels, electronic locks, calculators, menu systems, password entry devices, home automation systems, and custom control interfaces. The keypad connects through an 8-pin ribbon cable and works by scanni

Key Features

• 16-button membrane keypad arranged in 4×4 matrix
• Requires only 8 microcontroller pins
• Thin, lightweight, and flexible design
• Self-adhesive backing for easy mounting
• 8-pin ribbon cable connection
• Compatible with Arduino, ESP32, STM32, Raspberry Pi, and PLC systems
• Works with standard Arduino Keypad library
• Low power consumption
• Durable membrane surface resistant to dust and light moisture
• Ideal for password entry, menu systems, locks, and control panels

Specifications