4x4 Membrane Matrix Keypad
—A 4x4 membrane matrix keypad gives sixteen buttons on eight wires, the standard numeric input for access panels and menu systems.
Specifications
- 16 keys in a 4x4 matrix
- 8 connections — 4 rows, 4 columns
- Adhesive-backed flexible membrane
- Ribbon cable with 2.54mm header
- Sealed surface, resists dust and splashes
What you can build with the 4x4 Membrane Matrix Keypad
- Door entry PIN pads
- Menu and setpoint entry on controllers
- Calculator and game projects
- Equipment control panels
Compatibility
Works with Arduino, ESP32, Pico and Raspberry Pi using the Keypad library. Eight GPIO is a lot on a small board — a PCF8574 I/O expander puts the whole keypad on the I2C bus instead.
Shipping
Dispatched from New Zealand with courier delivery nationwide, including rural addresses. Prices are in New Zealand dollars.
Availability: Sold out
A 4x4 membrane matrix keypad gives sixteen buttons on eight wires, the standard numeric input for access panels and menu systems.
Specifications
- 16 keys in a 4x4 matrix
- 8 connections — 4 rows, 4 columns
- Adhesive-backed flexible membrane
- Ribbon cable with 2.54mm header
- Sealed surface, resists dust and splashes
What you can build with the 4x4 Membrane Matrix Keypad
- Door entry PIN pads
- Menu and setpoint entry on controllers
- Calculator and game projects
- Equipment control panels
Compatibility
Works with Arduino, ESP32, Pico and Raspberry Pi using the Keypad library. Eight GPIO is a lot on a small board — a PCF8574 I/O expander puts the whole keypad on the I2C bus instead.
Shipping
Dispatched from New Zealand with courier delivery nationwide, including rural addresses. Prices are in New Zealand dollars.