After installing GRBL 1.1 my homing procedure has changed.
First the Z axis homes at the usual speed and then backs off the 5mm, but then it proceeds to repeat the whole homing movement but at a loud and very slow speed.
Then both the X and Y axes do the same thing. Normal speed home movement and back off, then loud slow speed re-homing and back off.
I have double and triple checked my GRBL settings line by line for my XXL with those listed on the Carbide site and they match.
I’ve downloaded and installed UGS V. 2.0… Same results.
It’s kinda hard to listen to. It sounds like the gantry is in pain.
It’s just doing a slower motion to “dial in” the position of the switch. Without hearing what you’re hearing, I’d say it’s normal, meant to improve repeatability.
Same exact thing with my XXL after the upgrade. It doesn’t sound right to me, but it can’t be skipping on the belt or anything because jobs all run correctly.
You could change that to whatever you’d like. It just changes the feed rate for homing. Theoretically, the slower it is, the more accurate your homing results will be.
Your motors are fine. Steppers make noises when they move. Many, myself included, get a kick out of hearing our stepper motors play music.
I’ll try to get a video of mine on the next job I run. It is not typical stepper motor noise. This sound is similar to what you hear if you are zeroing the z and accidently run it into the work piece.
You can certainly change them. $25 is the “seek” rate - it runs at this rate until it hits a switch. Setting it too high can really slam the carriage into the stops- I used to use 5000. I currently use $25=2000, and $24=100, with a pull off, $27=5mm
Okay, I pulled my little Shure VP83F out and threw it on a camera with no production values allocated to the image. I repeated $H in the MDI window over and over to dial up the gain on the mic to just shy of clipping, then recorded one cycle for auditory comparison: