Posts made by Scott_H

Hi GaRv3,

This may be covered elsewhere, but have you tried increasing the travel speed in your test gcode?
ie, "G1 Z10 F50" to "G1 Z10 F300" or similar?
You could also try adding an H value to M915, such as "M915 P2:4 H10 S-10 F0 R1"

"Hnnn (optional) Minimum motor full steps per second for stall detection to be considered reliable, default 200"

I admit I am not certain of the exact relationship between mm/minute and steps per second, but I think you have
400 steps/mm;
10mm/minute;
=4000 steps/minute;
=66 steps/second.

Personally I haven't had much luck tuning Z stall detect to where I would use it as a safeguard, however I am logging messages during a regular print.
On my machine I have both Z stepper motors on Drive 2 (option B on the "Duet Wifi/Duet Ethernet Connections" image)

Ah thanks! Have added that information to the wiki. I attempted to follow the document formatting, though I am a wiki novice so…

I have stall detection working - mostly, still trying to dial it in.

Is it possible to both log and pause? ie, M915 Z S52 F1 R1 R2? I feel this would be quite handy as far as knowing what caused a fault. Logging more details than simply "Warning: Driver(s) 2 stalled at Z height 55.00" would be quite a thing too. The command as I have pasted it certainly doesn't work, but is there something silly I'm missing?

That said, the fact that this works at all on a coreXY machine is amazing.

Another question - I believe the extruder is P3 on my machine (driver 3). This being the case, is it feasible to use stall detection to notice extruder backpressure and pause a print? Or is this idea likely to cause me much gnashing of teeth but not much success? I'm happy to have a crack at it, but just thought I'd see if anyone else has attempted this.

I'm using the Sannce ip camera mentioned on the wiki - $40 delivered to Australia, so cheaper than the pi+camera.

I was using the snapshot cgi method, but changed to using http://192.168.1.6:16325/videostream.cgi?loginuse=MyUserName&loginpas=MyPassword, and ticking the embed webcam stream under DWC settings.
Can confirm that this method works perfectly under chrome on windows.

If it doesn't work for you, changing the webcam update interval to, ie, 0.1 seconds may be a workaround.

I couldn't find the ip camera page on the new wiki, so am posting here.