I have just started with a 3d printer from Printrbot, an LC, and want to add a z probe to make it easier and faster to print. I was wondering if you had used your probe successfully, whether or not it gave reliable results, and what revision board was in your Printrbot when you made your probe. I have a D revision board, and have no idea which firmware will work with your probe. Could you give me some advise on how to proceed?