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Item #:
201716528
LONELY BINARY 5-Set I2C 4x4 Matrix Membrane Keypad for C++ ESP32 Pico
Item #:
201716528
IMP 28
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Product Details
| Compatible Devices | Arduino, Arduino UNO, ESP32, ESP32-S3, Raspberry Pi, Raspberry Pi Pico, ESP8266, STM32 |
| Connectivity Technology | I2C Digital 4u00d74 Matrix Keypad Interface GPIO (via I2C adapter) |
| Additional Features | Built-in adhesive backing for easy mounting on panels and enclosures, I2C interface, GPIO-saving (2-pin), 4x4 16-key matrix, soft membrane, adhesive backing, PCF8574 adapter included, 3.3V/5V compatible, Multiple keypads supported on a shared I2C bus using PCF8574-based adapters, Soft membrane 4u00d74 matrix keypad with 16 clearly labeled keys, Wide voltage support from 3.3V to 5V for broad microcontroller compatibility |
| Switch Type | Tactile |
| Keyboard Layout | QWERTY |
| Hand Orientation | Ambidextrous |
| Number of Keys | 80 |
| Style Name | 5 Set (Keypads 4x4 16 keys +I2C Adapters) |
| Enclosure Material | Flexible membrane keypad |
| Brand | LONELY BINARY |
| Keyboard Description | Numeric |
| Antenna Location | DIY electronics prototyping, IoT control panels, Keypad input for microcontroller projects, access control systems, robotics interfaces |
| Built-In Media | 5 u00d7 4x4 soft membrane matrix keypads, 5 u00d7 I2C adapter modules |
| Model Number | 4x4 Matrix Keypad Kit |
| Model Name | 4x4 Matrix Keypad Kit |
| Item Highlight | 5 soft keypads + 5 I2C adapters; 16 keys each, 2-pin (SDA/SCL) saves GPIO; 3.3V/5V; adhesive backing; storage case; Pi, STM32 |
| Unit Count | 5 Count |
| Manufacturer | LONELY BINARY |
| Number of Packs | 5 |
| Number of Items | 5 |
| Mfr Part Number | 4x4 Matrix Keypad Kit |
| Recommended Uses For Product | DIY electronics prototyping, IoT control panels, Keypad input for microcontroller projects, access control systems, robotics interfaces See more |
| Special Feature | Built-in adhesive backing for easy mounting on panels and enclosures, I2C interface, GPIO-saving (2-pin), 4x4 16-key matrix, soft membrane, adhesive backing, PCF8574 adapter included, 3.3V/5V compatible, Multiple keypads supported on a shared I2C bus using PCF8574-based adapters, Soft membrane 4u00d74 matrix keypad with 16 clearly labeled keys, Wide voltage support from 3.3V to 5V for broad microcontroller compatibility See more |
| Style | 5 Set (Keypads 4x4 16 keys +I2C Adapters) |
| Material | Flexible membrane keypad |
| Included Components | 5 u00d7 4x4 soft membrane matrix keypads, 5 u00d7 I2C adapter modules |
| Item Weight | 0.4 lbs (180 grams) |
Product Description
LONELY BINARY 5-Set I2C 4x4 Matrix Membrane Keypad for C++ ESP32 Pico
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31 October 2026 · via Trustpilot
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