there a few users using a k40 with an SKR2 running the STM32 port. I use a fly-e3-pro.
Yeah I saw that article a while back. I spent about six months researching first 3D hardware and then laser hardware before deciding on my current configuration (yeah I am an engineer and sometimes plan too much). Because of this I think I reached the end of the internet for K40 searches lol.
btw, the link for the honeycomb working panel doesn't work
@dc42 If my laser is 24 volts, can I connect to the PWM from the LASER/VFD output and power it from the 24v input or from the heater?
If the laser accepts a 5V or TTL level PWM input signal, then you can connect the LASER/VFD output to that and the laser power supply voltage is immaterial. Make sure that you have the Duet and laser grounds connected.
Can the program that generates your GCode output S0.005 instead of S0 on non-cutting G1 moves?
You could use another PWM-capable pin to generate the tickle signal, and use a gate to OR it with the main laser control signal before being fed to the lase
Hi sorry For taking so long to reply been busy but I am currently trying the OR gate method you suggested and I am able to get both "HEATER4" and "HEATER5" outputs onto 1 pin through a CD74HC32E but they are not in sync so the signal looks a bit all over the place.
(Pin Outputs are on the top left of each picture)
Is there a way to fix it? Maybe by having to use 2 pins on the same pwm timer??? if so which 2 pins should I use or is that to be expected. as for the program I'm going to use I was planning on lightburn. I only have the free trial right now but checking it out there is no option to set OFF state to S0.005.
@knicklicht Looking at the page about the laser, I'm pretty sure you supply 24V to it, and then control it with a PWM signal. However, there's no manual or details on the page what the control signal is. Email them for more details.
@chimaeragh you could even put macros called M3.g / M5.g into /sys ... add a parameter to M3 and you can control the PWM when calling M3. That said I see no reference to M3/M5 being disabled in RRF. Did you enable laser mode?
i ve managed to get some results working a bit with lightburn. i also noticed ( i have read it already) that both lightburn and laserweb can connect to the duet3d . I didn't try to control the the machine through them . i am using the web interface at the moment.