[Rafael] just made a little library that allows you to interface these modules to the Atmega328p-based Arduino UNO in order to gain ... Our guess it that an SPI / I2C IO extender could lift ...

I2C expanders, or ADCs will give you plenty of pins for whatever project you have in mind. All these require extra components, though. Enter the ExtraCore library for Arduino, a software library ...

Read more: Battery Brands Ranked From Worst To Best The Arduino Uno Rev3 is the third revision ... onboard methods of communication: serial, I2C, and SPI. These are all wired connections, meaning ...