This is my first posting here, so hello from Paderborn/Germany!
Currently, I am rebuilding a K40 CO2-Laser from scratch.
I am planning to use a MKS SBase with GRBL-LPC to control the laser.
Having searched a lot hours in the web, I still have some open questions:
1.: for my new gantry-setup I would like to use 2 Stepper Motors for Y-axis as the usable workspace has been extended to its maximum and I would not prefer using a large connecting rod. Is it possible with GRBL-LPC/MKS SBase 1.3 to “mirror” a stepper Port?
2.: I found some postings where users had problems powering the K40 Laser. Sometimes the PWM-Signal seems to be inverted and sometimes not. Is this a setting or a question which PSU is used? I also read postings where a solution was to use TTL instead. Sorry for the maybe dump question, but can someone explain the difference to me? In my (too) simple world, the PSU needs a signal which tells how much power to use for the laser. Can this signal either be TTL or PWM?
Thanks a lot & best regards!