1 i have nothing at the motor tuning for spindle, didn't realize i should change something there, i only want to switch the relay on/off
2 i tested with the voltmeter, it get 2.7 volts always m3/m4/m5 changes nothing.
3 nothing is happening.
the relay only switches with the lpt program.
another thing i just found, when running a gcode program (generated with sheetcam) it switches 2-3 times/second.
u told another guy on the forum to use a macro for switching a weldinng machine on/off... this is kind of the same thing..
tx for your patience.