A better device for this would be a [Guzunty CPLD](https://github.com/Guzunty/Pi...

Drin on Feb 25, 2015 | parent | context | favorite | on: Show HN: DonglePi, a USB Stick Giving You the Rasp...

A better device for this would be a [Guzunty CPLD](https://github.com/Guzunty/Pi/wiki) as a Rasperry Pi shield ! It adds a 25 additional input/output expansion lines and also protects the GPIO pins of the Raspberry Pi !