A layered menu system for Arduino based on procedural implementation with common 4X20 LCD display and digital rotary encoder. I built this as a means to provide an user interface for simple Arduino-based projects that cannot afford to involve other more complex connectivity hardwares such as blutooth or wifi.
Demo: https://www.youtube.com/watch?v=Hd-iQXCqmWU
For more detail, visit http://www.timeslikethese.ca/journal/numerical-tree-menu-for-arduino