{"title":"4x4 keyboard keypad module","handle":"4x4-keyboard-keypad-module","url":"/products/4x4-keyboard-keypad-module","description":"A 4×4 matrix membrane keypad with 16 tactile buttons, ideal for adding user input to microcontroller projects. The keypad uses a standard 8-pin matrix wiring scheme (4 rows × 4 columns), requiring only 8 GPIO pins to read all 16 keys.\n\nThe flexible membrane design is thin and lightweight, making it easy to mount on enclosures or panels. Compatible with Arduino, Raspberry Pi, and other microcontrollers using common keypad scanning libraries.\n\nKey Features\n\n\n16 Keys – 4×4 matrix layout (0–9, A–D, *, #)\n\n8-Pin Interface – Standard row/column matrix wiring for simple scanning\n\nMembrane Construction – Thin, flexible, and easy to mount\n\nWide Compatibility – Works with Arduino, Raspberry Pi, ESP32, and other microcontrollers\n\n\nIdeal For\n\nPIN code entry and security systems\nMenu navigation interfaces\nCalculator and data entry projects\nControl panels and DIY electronics\n\n\nPackage Contents\n\n1× 4×4 Matrix Keypad Module\n","vendor":"Little Bird","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":187,"title":"Default Title","sku":"LB-LR0231","price":2.55,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":140,"option1":"Default Title"}]}