here is my lcd install into the existing control panel of a r2e4 boss 9.it is a 12.1 elo touchscreen that i stripped out of its case. the mach 3 screenset is set to 800x600.the control panel has from left, estop, rutex drive reset,contactor for drive power,feed hold, selector for manual or auto spindle,forward reverse selector for spindle, usb for jump drive, spindle speed up down, bezel for digital readout for spindle speed.
green buttons are x y z axis selection for manual pulse generator. push button beside green buttons is for increment selection for the mpg. keyboard has small trackball.
the fibreglass enclosure at the monitor has to be trimmed a little for the screen width. the touch screen works very well, even with it only being 800x600.