LightClock

Just added a couple of OpenSCAD files for the PIR sensor and the buttons that I will use for the master on/off switch as well as the PIR override pushbutton. Also I modified the LCD shield file to include a version of the shield without the stacking headers and a version with them. It's all on the PIR branch in Github.

I've just created a new branch to add a PIR sensor to the clock. it's used to light-up the clock for some amount of time (currently 1 hour) when it detects movement, otherwise turn all LEDs and LCD screen off. Next is a button to override or lock the on/off state. 

The PIR sensor and button will probably replace screws as "eyes" of the clock, when I redesign the enclosure.

I've just decided to call the current state v1. it works as expected even though the code isn't exactly clean and the case design sucks...