Hello, I have received my Chinese laser "sculpfun S9". So I have mounted it on my workbee 1500x1500mm from ooznest. The controller provided by ooznest is a duet 2 wifi. As in the tuto I saw, I have updated to the latest version of the firmware, ... according to the ooznest doc: https://learn.ooznest.co.uk/Guide/How+To+Update+WorkBee+Firmware+V1.0.7+>+V3.3.0-1.2/240 About the electronic, I have applied the instructions "Connecting laser to Duet 2 - additional hardware" from here: Laser PWM control Of courses mounted like this it is not definitive but it should be enough for the tests. Then I switch on the controller and I enter the command: M453 C"exp/heater3" F100 ; Laser uses heater3 pin, PWM frequency 100Hz To test, it I have used the commands to do some lines and I have test with multiple values for the S parameter from 10 to 200 G1 X50 F500 S10 But the result looks always the same. So probably that the PWM is not as it should. I have also measure the GND to heater 3 pin but it is always at 3.3V (probably normal?) So, do you see something obvious here and do I have a possibility to test the PWM without an oscilloscope? Thank you for your help on it! Regards,
I am certainly not expert on this @Benjamin Vg, but a quick read of the Duet g-code wiki suggests a bit more research is needed; M453 - enable cnc mode M452 - enable laser mode Have you allocated the output pin name using M950? As I said, I know very little about this, but others are using M42 to switch the output pin on/off. Why don't you come and ask the questions on the Workbee CNC Users Group where there are people using lasers with the Duet (and then post the solutions here). Log into Facebook | Facebook Alex.
First of all thank you for your reaction; You are right that I should maybe ask it into the workbee group. Is it possible to close this topic or move it? And about the command I mistyped here I use indeed the M452 and not M453 as in my original post: M452 C"exp/heater3" F100 ; Laser uses heater3 pin, PWM frequency 100Hz About the PIN with the command M950 I think that it is done by default by the framework but I am not sure of it...
I'm not sure about defining the pin in the Rep-Rap V3.3 based firmware either @Benjamin Vg - I'm still using the Rep-Rap V2.05 based firmware, but there are people in the Facebook group I linked to who are better able to help. No need to close this post, there are some members here using the Duet who might be interested in this. Alex.
Hello, I wanted to give some feedback for future references. I have been able to solve my issue by joining the the GND. The one of my laser power supply and the one from the duet controller. Thank you very much for your assistance!
