# mellon-gpio `mellon-gpio` adapts the `mellon-core` `Device` type to GPIO, for use with a `mellon-core` controller. To use it, simply connect a properly-designed physical access device (e.g., an electric strike driven by a relay circuit such as the one shown [here](http://www.petervis.com/Raspberry_PI/Driving_Relays_with_CMOS_and_TTL_Outputs/Driving_Relays_with_CMOS_and_TTL_Outputs.html)) to an available GPIO pin on the host where the `mellon-core` application will run. [![Travis CI build status](https://travis-ci.org/quixoftic/mellon.svg?branch=master)](https://travis-ci.org/quixoftic/mellon)