Arduino I2C Port Expander This is a library to turn any Arduino compatible microcontroller into the ultimate I2C port expander. Now with ATtiny support.

With the Arduino IDE closed, download or clone this repository and place it in the libraries folder. Open up Arduino and go to File > Examples > Arduino I2C Port Expander > Slave I2C Port Expander.

[Johngineer] found himself in need of an I2C sniffer, but didn’t have one available. Necessity is the mother of invention, so he put together this I2C sniffer sketch for Arduino. The arduino … ...

It provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface [serial clock (SCL), serial data (SDA)]. The TCA9554A consists of one 8-bit Configuration ...

Diodes Incorporated announced the PI4IOE5V6416 16-bit I/O expander, which enables any digital device to be accessed and controlled over an I2C interface, ...