How to Troubleshoot and Fix PCA9555PW I2C GPIO Expander Issues: Common Faults and Solutions

The PCA9555PW I2C GPIO expander is a popular chip for expanding I/O capabilities in embedded systems. However, like any other component, it can face issues that can disrupt your projects. In this article, we explore common faults, troubleshooting steps, and practical solutions to get your PCA9555PW I2C GPIO expander running smoothly again.