![]() Part 2 – The 74HC165 (currently reading) describes how to add digital inputs using the 74HC165 8-bit parallel-in serial-out (PISO) shift register IC. Part 1 – The 74HC595 described how to add digital outputs using the 74HC595 8-bit serial-in parallel-out (SIPO) shift register IC. Each part focuses on a specific integrated circuit (IC) chip. This three-part tutorial teaches you how to add more digital inputs and outputs to your Arduino development board. some displays, or your project uses many discrete sensors and/or actuators. This often happens when you connect to components that require a lot of pins for their interface, e.g. Sometimes, a project needs more digital I/O than what is available on your Arduino board. Reading All Inputs Using Defined Names And Bit Operations.Reading Single Inputs Using Familiar digitalRead() Functionality.Skill Level: Intermediate Table Of Contents
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