or located under the following github pages github.io. Additionally in combination with the technical datasheet of microchip PCF8574-Datasheet. PCF8574_I2C::PCF8574 pcf{0x20, &Wire}; void setup() { ...

2025-07-03: v2.0.0 - read()and write() have been replaced by port_input(), port_output() and other pin operations, as jm_PCF8574 is not inherited from Printor Stream Arduino classes. Also, the I2C bus ...