Assume that you are moving towards a complex microcontroller project bundled with blinkers, beepers, and a display panel.

2025-07-03: v2.0.0 - read()and write() have been replaced by port_input(), port_output() and other pin operations, as jm_PCF8574 ...

// Scans the I2C bus and prints any found device addresses (in hex) to the Serial console. // Buy this module: https://shillehtek ...