【Comprehensive 5-Sets Soft Keypad Kit (5 keypads+5 I2C adapters ) for DIY Enthusiasts】This kit comes with 5 flexible soft 4x4 matrix keypads (16 keys each), 5 I2C adapters to simplify connections, and a convenient storage container to keep everything organized and protected—perfect for multiple projects or backups without needing to reorder.
【Soft Membrane Keypads with Easy Mounting】Each keypad features a durable, flexible design with double-sided adhesive tape on the back, allowing secure attachment to hard surfaces like project boxes, desks, or enclosures—ideal for custom interfaces in robotics, security systems, or interactive prototypes.
【GPIO-Saving I2C Adapters】The included adapters enable I2C communication using just 2 GPIO pins (SDA and SCL) instead of the traditional 8, freeing up valuable pins on your microcontroller for other components—compatible with Arduino, Raspberry Pi, ESP32, and more.
【Genuine Lonely Binary Quality and Compatibility】Built by Lonely Binary, a reliable brand for maker electronics, these keypads and adapters support 3.3V to 5V operation, ensuring seamless integration with a wide range of MCUs; easy to program with popular libraries like Keypad_I2C for quick setup.
【Versatile Applications for Makers and Hobbyists】Use these 4x4 keypads for numeric entry, menu navigation, or custom controls in IoT devices, home automation, or educational projects; the soft, responsive keys provide tactile feedback while being compact and lightweight.