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#74HC165 HARDWARE SPI ATMEGA HOW TO#
#74HC165 HARDWARE SPI ATMEGA SERIAL#
#74HC165 HARDWARE SPI ATMEGA SERIES#

If you only need additional digital inputs for your project, the low-cost standard 7400 series 74HC165 IC is a good choice to incorporate into your design.

8 x 10 KΩ Resistors (available on SparkFun and Amazon).

0.1 ♟ Ceramic Capacitor (available on SparkFun and Jameco).

74HC165 8-Bit Parallel-Load Shift Registers IC (available on Digi-Key and Arrow).

8-Position Dip Switch (available on SparkFun and Digi-Key).

5 x Male/Male Jumper Wires (available on Adafruit and Arrow).

Preformed Breadboard Jumper Wire Kit (available on SparkFun and CanaKit).

Solderless Breadboard (available on Adafruit and SparkFun).

Arduino Uno (R3 available on Arduino and SparkFun WiFi Rev2 on Arduino and SparkFun) With Compatible USB Cable.

Linux, macOS, Or Windows Based Computer With A USB Port.

The resources created for this tutorial are available on GitHub for your reference.

#74HC165 HARDWARE SPI ATMEGA HOW TO#

The All About Circuit’s Understanding Schematics, SparkFun’s How to Read a Schematic, Core Electronics’ How to Use Breadboards, and Science Buddies’ How to Use a Breadboard guides are good resources for learning how to translate a schematic to a breadboard. In addition, this tutorial will use a solderless breadboard to build a circuit from a schematic diagram. If you are new to Arduino, or would just like to refresh your knowledge, please see our Blink: Making An LED Blink On An Arduino Uno tutorial before proceeding with this one.

#74HC165 HARDWARE SPI ATMEGA SERIAL#

Part 3 – The MCP23017 will describe how to add both digital inputs and outputs using the MCP23017 16-Bit I2C I/O Expander With Serial Interface IC.Ī basic understanding of electronics and programming is expected along with some familiarity with the Arduino platform. 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