Adding Digital I/O To Your Arduino Article Resources

This repository contains resources related to the Adding Digital I/O To Your Arduino article published on WoolseyWorkshop.com. It is a three-part tutorial describing how to add more digital inputs and outputs to your Arduino board.

Part 1 - The 74HC595

Teaches you how to add digital outputs using the 74HC595 8-bit serial-in parallel-out (SIPO) shift register IC.

OutputShiftRegister Sketch

An Arduino sketch that interfaces a 74HC595 serial-in parallel-out shift register IC to add digital outputs to an Arduino board.

Arduino_74HC595 Schematic

A KiCad schematic for a 74HC595 serial-in parallel-out shift register IC, with LEDs attached to the outputs, connected to an Arduino Uno.

Part 2 - The 74HC165

Teaches you how to add digital inputs using the 74HC165 8-bit parallel-in serial-out (PISO) shift register IC.

InputShiftRegister Sketch

An Arduino sketch that interfaces a 74HC165 parallel-in serial-out shift register IC to add digital inputs to an Arduino board.

Arduino_74HC165 Schematic