SparkFun Qwiic Directional Pad

The SparkFun Qwiic Directional Pad is a compact, versatile input device that integrates seamlessly with your I2C bus, offering a 5-way directional pad for enhanced control. Equipped with a low-profile, 5-way directional pad and a built-in RGB status LED, this board provides visual feedback for each button press. The PCA9554 8-bit I2C I/O expander reads the momentary push buttons, while the power LED ensures easy monitoring of the board's status. Thanks to the Qwiic system, no soldering is required, although 2.54mm-spaced pins are available for breadboard use. The configurable I2C address allows for daisy-chaining multiple boards.

Perfect for applications that require additional input options, this directional pad can be used to navigate menus or control small robots. It’s an excellent choice for enhancing the user interface of your projects, providing intuitive and responsive control.

One of the standout features is its flexibility in integration. The RGB LED channels can be individually disconnected from the PCA9554's GPIO and connected to different inputs, allowing for customized visual feedback. The interrupt pin is a valuable addition, alerting your microcontroller to quick state changes, ensuring your system is always responsive.

For those looking to expand their project's capabilities, multiple directional pads can be linked together via the Qwiic system. Each pad's I2C address can be configured independently, making it easy to manage multiple inputs without conflict.

Developers can quickly get started with the basic example available in the GitHub Hardware repository. The SparkFun I2C Expander Arduino Library is essential for reading or writing to the PCA9554's I/O pins, easily accessible through the Arduino library manager or directly from GitHub as a .zip file.