@chris-annin Great thanks Chris!

After looking at similar post I think my solution will be to directly solder the wires onto the J1 limit switch so I don't have any clearance / bendin...

I found the problem and I am documenting it here:

Never mind ^ I have a shorted wire somewhere on the robot wire side. All USB ports offer overload (implies short-circuit too) protection so that is wh...

The Teensy 3.5 is expecting an input when I connect a wire to the Vin pin and disables power from the usb. The current wiring schematic in the manual ...