I thinking to add limit switch in travel track, below is some ideal and obstacle: 1. change GX16-4 to GX16-7 in both electronic enclosure end2. install limit switch at travel track3. Modify python program 4. Modify teensy program to allow add command send motor to limit switchstep 1.), 2.) I can do easily, 3.) i will make modification at webservice project instead of ARCS,py.Biggest challenge for me is 4.) whic is something I not confident to do, worry it break many thing and cause unrecoverable damage. So far any of you good in the existing Teensy and able to help up?