So I made several test.
file test was :
1st test : (laser configured as tube)
PWM to LPWM2
GND to GND
result
offset fill : so as I saw in another post : PWM is always on or off when starts a line till the end of these one. So I’ve stopped rendering that’s why it seems look like that I’d like… but if I left it till the end, the square had been entire black and not like a frame.
2nd test (laser configured as tube) with the help of thread Adding a diode to Ruida machine - #4 by HalfNormal
PWM to L-On2
GND to L-An2
result
only fill : here, the frame appears. Laser do the job but it seems that I can’t tune power that is it annoying to burn in grayscale…
Now, I’ll try RF mode as adviced me Jack Wilborn and I ll be back to share my results.