The solution? Dive into the other connectors on board looking for an unused GPIO. Every full-sized Pi has a connector for the camera and the LCD screen, and to operate some of the functions of ...

It features a 1.2V/3.3V GPIO with selectable drive strengths and optional internal 100K ohm pull up or pull down resistor and a selectable Schmitt trigger. The ODIO mode targets the official I2C ...

The standard GPIO, both regular and reduced footprint, in this library is a highly configurable 5V tolerant, multi-voltage, multi-protocol I/O. The library's GPI is a highly configurable ...

One possible way to do so is suggested by [Doctor Volt] in a video where a Samsung Galaxy S4 is combined with a USB-connected FT232R board to add external GPIO. The idea is pretty simple ...