The Pi4J Project

The Pi4J Project is a leading open-source Java I/O library provider specializing in facilitating seamless access to the full I/O capabilities of the Raspberry Pi and other ARM-based embedded platforms. Based in Knoxville, Tennessee, we empower Java developers to build innovative applications for IoT, robotics, and embedded systems. Since 2012, Pi4J has evolved through multiple releases – from V1 to the current V4 – continually adapting to the advancements in both the Java ecosystem and the Raspberry Pi hardware. Our core focus is on providing a user-friendly, object-oriented API that abstracts the complexities of low-level hardware interaction, allowing developers to concentrate on their application logic. We support a wide range of I/O protocols including GPIO, I2C, SPI, PWM, and RS232, and offer robust support for the Raspberry Pi 5 and newer versions. Pi4J is now part of the Commonhaus Foundation, ensuring its long-term sustainability and continued commitment to the Java developer community. We are dedicated to fostering a vibrant community around Pi4J, offering comprehensive documentation, examples, and active support.