The PCF8574_LH library provides a simple interface for controlling the PCF8574 I/O expander using the I2C communication protocol. It allows you to read and write values to the PCF8574's registers, ...

+++ title = "Rotary encoder with non-polling (interrupt based) switches from PCF8574" description = "" tags = [ "arduino", "digital-io", "library", "button-press ...

These days, a lot of embedded projects feature some sort of screen, and a screen often creates a desire for a nice user interface. [Geoffrey Wells] has created a tool for developing web interfaces ...

Events are in chronological order. ALA's offices and divisions sponsor a variety of library promotions throughout the year that libraries of all types all across the country can get involved with to ...