I could not find any physical limit switches on the SV08, are my eyes playing games on me or does the SV08 just rely on soft limits (via software)?
Thanks,
Sam.
It uses Sensorless Homing
Does that mean it is configured in printer.cfg??
As far as i know it uses the motor current to detect the end of travel, that’s why sometimes it will give a loud knocking noise when reaching the end.
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Ah, that’s why I hear the knocking sound when it move all the way back during homing! Thank you for the explanation.
Also, this is why you have to make sure the cabling to the extruder doesn’t get stuck between the extruder carriage and the frame while homing X, as this will offset the X home. I have experienced this once, and after this false homing it melted the nozzle into the plastic next to the z-touch sensor while doing a z-calibration.
To prevent this I tied a very thin stainless steel TIG welding rod to the cable wrap, I think a piano wire will also work fine.
That’s a very good tip, thanks!
The force, i.e. current through the motor, needed to register end stop can be adjusted in the config. With proper adjustment will the loud noise disappear.
It’s in printer.cfg, under [tmc2209 stepper_x] and [tmc2209 stepper_y], settings driver_sgthrs. which I have set to 82. Lower is stronger, higher is less strong. Setting the number too high will cause the steppers to “dance”. Too low creates the loud “bang” sound. Failed prints because of shifted layers are also an indication of numbers too high.
Hello,
I gonna try with that :
https://a.aliexpress.com/_EHZtIgk
To lift the USB cable connected on the SV06 ACE extruder.
Sometime I think this cable is too close to the bed.
I would advise the thinnest one, otherwise I think it will be to tough to bend easily by the movements of the carriage
I ordered a 1.5 mm diameter rod.
I’ll see the result and post a comment.
First test with a 1.5mm rod.
It works but I ordered a 0.8 and will try when I’ll receive it. I think it will be better.
If you print something tall, will it hit/rub on the bottom of a spool…??
No, the spool is on the other side.
I tried to mount the axis at the top.
