6th day - limit and home switches
Before running the machine we have made the limit- and homeswitches. Most of the configuration can hopefully be done in the software, but the tool used is probably not always the same. Therefor we have decided to make one limit-switch were there is a risk for the tool to hit the frame if not configured right. The rest of the limits is not changing, and therefor should we have chosen to configure these in the software.
The home switches are mounted in all axis, and provide a point in the space for the machine to calibrate (0,0,0). It is worth considering where to mount the home-switches so that the point is suited as a starting point. It depends on wich direction is front of the machine. The home of the z-axis should always be when it is at its highest. The small switches is wired together on a board, for convenience when we shall connect them to the controlboard.
The swithes are powered by 5V when not opereated, and when pushed the power is cut. This makes the power fluctuating in the air not affecting the terminals.