Understanding the I2C Protocol
Common PCF8574 i2c LCD module as Button interface. - Networking, Protocols, and Devices - Arduino Forum
MCP23017: Have you run out of I/O? This chip is the answer!
SparkFun Qwiic Button Hookup Guide - SparkFun Learn
How to Use I2C Devices with Raspberry Pi | Microcontroller Tutorials
Building a Menu with Buttons for your Microcontroller
Grove - I2C Touch Sensor - Seeed Wiki
Car game with Arduino and I2C LCD Display! - Hackster.io
How to Use I2C Devices with Raspberry Pi | Microcontroller Tutorials
I2C NavKey – DuPPa
A Bolt-On I2C Navigation Key For Your Next Project | Hackaday
DS3231 REAL-TIME CLOCK WITH I2C LCD AND ARDUINO NANO : 5 Steps - Instructables
I2C LCD on Arduino - Stunningly Easily Setup and Control
CAP1188 8 Key Capacitive Touch Sensor Module SPI I2C Captouch LED 8 Button / Key Interfaces 3V 5V for Arduino|Integrated Circuits| - AliExpress
Tindie Blog | I2C Button Interface Module With Extras!
Reading a button input using a Raspberry Pi
Grove - Button - Seeed Wiki
Arduino I2C LCD Buttons Menus - YouTube
Communicating with I2C Devices | Onion Omega2 Documentation
LCD Button Writer - Arduino Project Hub
