Of course you can buy it, and it is not so expensive. But it is so simple and you can make it by yourself.

Step 1: Parts

To build this mechanical end-stop switch you will need :

1) 1x micro switch roller lever eBay

2) 1x 10k 0805 resistor

3) 1x 120R 0805 resistor

4) 1x 0.1uF 0805 ceramic capacitor

5) 1x led 1206

6) 0R 1206 jumper ( resistor)

7) copper board or perforated breadboard

Step 2: PCB Board and Schematic Diagram

Design printed circuit board (PCB), I was used ,,Sprint-Layout" software.