It works !! It's communicating and I am already learning it's customs .
Haha, I today acquired an old notebook with winxp and 32bit and finally I was able to test lpt-communication between the electrical control to my cnc mill and the software. On the picture below you can see the yellow led is on and that means computer and control are communicating .
It's routed via optical transfer, so the circuits of the board and the computer are separated, the control works with 225 Watts @ 46 Volts and 5 Ampere, the wiring is catastrophic, would kill me right away if I touch it . I switched on the laptop and were able to set the control active and to trigger things like endpoint switches. I sadly have no stepper engine availiable atm, therefore I cant test engines with it yet.
I now will construct the mechanics, already have a nearly finished CAD modell and a masterplan of what parts I'll need. When it works the control will manage 3 stepping engines to move the axes and give information about 5 endpoint switches.
For those of you who dont know what I am talking about, I attached a utube video where you can see a cnc mill (watch your volume before opening it, the sound does sound like taken directly from the movie war of the worlds ). It's a computer-controled huge drilling machine that can even mill steel or draw cool pictures.
Took me 8 months now to build the control alone in my freetime, it's all a bit catastrophic yet; has no casing yet BUT IT WORKS !!! It's all build from scratch, I soldered all the parts only ordered the raw boards from a guy.
Yes yes yes ! So much for entps never finish what they start