Topics created by t0bias

If you remove the belts and try turning the motor with your fingers does it turn smoothly over the full rotation?

Photos of the printer?

After a time of long unuse I might think of lubrication?

@t0bias

You G4 line is missing either a P or S parameter to define how long the delay should be.

https://duet3d.dozuki.com/Wiki/G4

@t0bias, if the board is detected then the I2C pins are connected correctly and the slave address is set correctly.

How are you testing the outputs of the SX1509B? I have connected each output through a 100 ohm resistor to one of the cathodes of a 2-digit common anode 7-segment display, with the anodes connected to +3.3V.

2021-03-09 21.15.43.jpg

@3dML said in Monitor what True Bed Levelling is doing?:

G1 Xnn Ynn
G30

I forget that it is two commands. I will update my post. Thanks for pointing that out.

Now I happen to think that the X and Y parameters SHOULD work which would be consistent and avoid having to determine the correct X and Y values for the G1.

Frederick

Have you seen this article yet? https://duet3d.dozuki.com/Wiki/Calibrating_thermistor_and_PT1000_readings

Also, I'm assuming you are getting "actual" temp values with a pretty accurate sensor like a thermocouple?

Thanks you all, adding the timings to the M569 commands as @jay_s_uk and @PCR suggested fixed it!

Yes, that's what I have on my Tronxy printer.

It has dual independent Z motors, and I probe via G32 near the screws and it relevels the bed properly.

Thanks, adding the 4.7k resistors solved it!

Ok, figured it out, but well, it's totally embarassing.. 😬

I misslabeled some of the individual strands connecting the drivers to the extension breakout, basically wiring one of the Y-Motors Pulse pins to the X-Motors Enable pins.

I still don't quite understand, why this would result in such erratic/arbitrary moves, but hey - at least it works now!

Sorry for the bummer!

Thanks so much, that totally did it! Didn't see that myself.. 🙄