Lync presence (busy) light

Work in progress, check back often

When I am at work, I use headphones; a lot. About half the time I am listening to music, the other half I am talking with someone on Lync (Skype for Business). This has made it difficult for my collages to know whether I am available or not, so I get interrupted when I’m on the phone. I needed a way to communicate my availability, and Lync already does a pretty good job with this; it’s red when I am in a meeting, on the phone or simple do not want to be disturbed. Yellow when I’m away; I don’t think the away part is a problem, when my chair is empty I am usually away… And green: come on in! Enter the Lync presence light, or busy light if you will. Yeah there are some you can buy, but where is the fun in that? So I made one using an Arduino board.