Twotrees TTS-55 Pro Endstop Mounts

Although the TTS-55 Pro doesn't come with endstops, its controller supports adding them.  

These mounts are designed for a common 40mm length endstop that almost always comes with cables and a red  circuit board.  They can be found easily on Amazon and Aliexpress and in my case a vendor included them as a free gift with a purchase I made.

The included cables will not have the exact connector for the controller but will still fit.  Just be sure and have the green wire on the left and red wire on the right as shown in the picture.  Also, you'll need to trim off some extra wire length on the Y axis cable  and use it to extend the X axis cable to be long enough.

The mounts will stay in place with a pressure fit but you can also add an optional T-Slot Nut that accepts a M3 screw.

I used M2.5x6 screws with nuts on the back side of the circuit board and then screwed remaining post length into the holes on the mount.  This helps stop the board from wobbling since it does not have a flat bottom.  Using double sided tape to mount the board is also an option.

The original FreeCAD files are included in case you need to change the location or size of the holes.

The following GRBL settings need to be updated before homing will work.

Although the X axis endstop mount for a TTS-55 will not fit on the TTS-55 Pro because of a change in the hose mount, there are a couple of good Youtube videos for those mounts that will help walk you through the install.