Button latch for ES121

[burner-]

It would be very usefull feature if double click of button will enable screw driver so that it act like button is pressed. Doubleclick again and it will disable it. Even more usefull it would be if first move after double click will select rotation direction. So if you accidentaly turn screwdriver to another way it will do not do nothing. Example: Double click + turn clock wise -> screw driver work now so that you can close your screws just by turning it clock wise again without pressing button. Turning ccw will stop it but not start motor to ccw motion.