An optical switch usually used to detect when your robot has reached the minimum or maximum position of travel.
An optical endstop AKA opto endstop is a switch made out of light. When something interrupts the light-beam, then it signals the motherboard. Useful for detecting if your robot is attempting to self-destruct. ;)
Also, there are no moving parts to wear out, so they will last pretty much forever.
So, when all is said and done, hopefully I will have taken this:
It’s finally here! This is the box from MakerBot Industries. It’s twenty-five pounds of robot parts, plastic filament, padding, and cardboard all carefully packaged and delivered to my doorstep.
Box opened! Everything was packed very carefully with lots of padding, bubble wrap, and most parts grouped in their own boxes.
Build surfaces – a LOT of them. I can’t even imagine how much I would have to print to use up this many surfaces. You can see one etched acrylic build surface. There are also a LOT of foam core build surfaces.
I’m terribly sorry about your server. You see, it’s just that I’m particularly excited about this package. So hopefully having me refresh the page every 15 milliseconds is forgivable, if not understandable.
Tell you what – once I get my CupCake CNC operational, I’ll see what I can do about printing you a new server.
Anyhow, now that it’s here your IT guys can relax.