In a group of economic CO2 laser, Blue K40 laser, we want to change the board of our machines and we are considering using duet maestro, since several of us already use duet in our machines.
I have searched and found contradictory information in the forum, external websites etc ... and I wanted to check the current state of laser development (in one of the last changelog mentioned lightburn software), and the connection to this type of machines.
There are some people who have migrated it to ramps, they use the servo ports for laser control, 2 pins since one is pwm for power and the other is activation at 5V.
I will be putting the info I have located on the laser and see if together we can confirm if the change is possible, since the current board does not allow pwm in the gcode, it is controlled from a separate panel that generates the pwm, but not by gcode
There are people who have changed it with a cohesion3d board, but they are not cheap and they come from the USA, so you have to pay customs. Also, if possible, we prefer to maintain the duet3D ecosystem ; P
I use a translator, so if any part is not clear, let me know and check it.
this is schematic for ramps:
Github marlin conversion, with schematic and firmware
More info for ramps, http://weistekengineering.com/?p=2406
Other link: http://3dprintzothar.blogspot.com/2014/08/40-watt-chinese-co2-laser-upgrade-with.html
and original firm marlin for K40 https://github.com/TurnkeyTyranny/buildlog-lasercutter-marlin
fin this with first duets, only with diode : https://reprap.org/forum/read.php?133,521301
is possible control pwm 5V with duet? use fan port with 5V?
I'm a little lost to start the conversion, or if possible, although it seems that there will be no problem.