This library is to use an HC4067 multiplexer by means of a PCF8574 (I2C 8 channel IO). The HC4067 allows e.g one analog port read ...

Iridium SBD is Mikal's original library which does not (currently) support I2C. The Iridium 9602 and 9603N are fascinating ...

Assume that you are moving towards a complex microcontroller project bundled with blinkers, beepers, and a display panel.

I2C protocol makes it easier to connect more ICs using only 2 wires SDA and SCL and allows communication between them at relatively low speed. The I2C bus or TWI (Two Wire Interface) allows a single ...

[Johngineer] found himself in need of an I2C sniffer, but didn’t have one available. Necessity is the mother of invention, so ...