The SX1509 16 Output I/O Expander Breakout Board makes it easy to prototype using the SX1509 so you can add more I/O onto your Arduino or I/O limited controller. It can leverage your I2C interface for ...

Design of a 7-segment Multiplexer with Arduino, which can display integer, floating numbers. The multiplexer works as follows: * The digital ports connect to the common displays, which will activate ...

A while ago I received a couple of I/O port expander modules that use the I 2 C protocol. Using that Chinese module, you can use only the SDA and SCL pins of your ...