This book equips the reader with skills necessary to design and build custom hardware interfaces for the Raspberry Pi. A thorough chapter on interfacing 5-volt systems to 3.3-volt Raspberry Pis expands the reader’s choice of peripheral options. Ready to go C++ programs involving GPIO and I2C peripherals are provided. Explores ADC, DAC, rotary encoders, CMOS shift registers. I2C I/O extenders. Readers will discover low cost display and sensor options for embedded system projects. Master 12C communications using Raspbian Linux in C++. Perform ADC and DAC experiments. Debounce buttons and switches using hardware and software solutions. Read rotary encoders for direction and step. Develop flywheel rotary encoder effects for ease of tuning. Construct a hardware interface to the Music Playing Daemon (MPD) with developed software. Discover how to add your own hardware keypad for remote combination lock applications. **What you'll learn:** * Build simple, low cost input/output interfaces including rotary encoders * Interface with 5-volt devices from a 3-volt Raspberry Pi system * Conquer stuttering buttons and switches through hardware and software debouncing * Apply analog to digital and digital to analog conversions on the Pi * Read potentiometers (volume control) from the Pi * Determine step, directions, and velocity of a rotary encoder * Provide your own hardware devices for embedded applications * Perform remote interfacing using the I2 PCF8574 chip * Work with external CMOS devices like the 74HC595 (in C++) **Who this book is for:** Students and hobbyists interested in building custom interfaces for their Raspberry Pis. Design and build custom hardware interfaces for the Raspberry Pi and discover low cost display and sensor options for embedded system projects. With this book you'll master 12C communications using Raspbian Linux in C and perform ADC and DAC experiments. You'll experiment with debounce buttons and switches using hardware and software solutions. Develop flywheel rotary encoder effects for ease of tuning and construct a hardware interface to the Music Playing Daemon (MPD) with developed software. Discover how to add your own hardware keypad for remote combination lock applications. Custom Raspberry Pi Interfaces offers a thorough chapter on interfacing 5-volt systems to 3.3-volt Raspberry Pis designed to expand your choice of peripheral options. Ready to go C programs involving GPIO and I2C peripherals are provided. This book also explores ADC, DAC, rotary encoders, CMOS shift registers. I2C I/O extenders. What you'll learn: Build simple, low cost input/output interfaces including rotary encoders Interface with 5-volt devices from a 3-volt Raspberry Pi system Apply analog to digital and digital to analog conversions on the Pi Read potentiometers (volume control) from the Pi Determine step, directions, and velocity of a rotary encoder Perform remote interfacing using the I2 PCF8574 chip Work with external CMOS devices like the 74HC595 (in C ) Who this book is for: Students and hobbyists interested in building custom interfaces for their Raspberry Pis. This Book Equips The Reader With Skills Necessary To Design And Build Custom Hardware Interfaces To Be Used By The Raspberry Pi. A Thorough Chapter On Interfacing 5-volt Systems From A 3.3-volt Raspberry Pi System Equips The Reader For Additional Peripheral Options. Ready To Go C++ Programs Involving I2c And Spi Peripherals Are Supplies. Explores Adc, Dac, Rotary Encoders, And Gpio. Readers Will Discover Low Cost Display And Sensor Options For Embedded System Projects. Master I2c And Spi Communications From Raspbian Linux In C++. Perform Adc And Dac Experiments On Their Pis. Debounce Hardware And Software Buttons/switches. Read Rotary Encoders For Direction And Step In C++. Implement Flywheel Rotary Encoder Effects For Use In Tuning Gnuradio. And Hack Gnuradio Software So It Will Respond To Their Custom Hardware Controls. Front Matter....Pages i-xv Introduction....Pages 1-4 3V/5V Signal Interfacing....Pages 5-24 VGA LCD Monitors....Pages 25-34 I2C LCD Displays....Pages 35-54 MC14490 and Software Debouncing....Pages 55-66 PCF8591 ADC....Pages 67-90 Potentiometer Input Controls....Pages 91-102 Rotary Encoders....Pages 103-127 More Pi Inputs with 74HC165....Pages 129-140 More Pi Outputs with 74HC595....Pages 141-152 MCP23017 I/O Port Extender....Pages 153-168 MPD/MPC Hardware Controls....Pages 169-190 Custom Keypads....Pages 191-212 Back Matter....Pages 213-216
