Topics created by fulg

@owend I understand this fan is "not" PWMable but in practice it works, it is just super noisy. I don't think it changes anything in this case however.

what is your M308 setting for this fan?

Since you asked: M308 S1 A"Hotend" P"temp2" Y"pt1000", but I can reproduce this on a spare Duet2 Wifi board with a more typical M308 S1 P"e0temp" Y"thermistor" T100000 B4138.

In order to prove my point and eliminate the fan and frequency from the equation, I hooked up my logic analyzer to measure the PWM duty cycle (the "fan" here is a simple resistor), and this is what I got:

921a666b-8456-4ad9-8b1e-1fc2d1ed116b-image.png

The config here was M106 P4 S0.1 H1 T20 so it should have been running at 10%, however the firmware did indeed send 50% instead of what I configured. You can also see I reverted back to the default 250Hz frequency.

If I disable thermostatic mode, then the fan control works as expected with M106 P4 S0.1:

aaa52522-cd69-470f-8139-cda4aa594264-image.png

(the duty cycle is inverted so 90% here means 10% in RRF.)

So I think this proves there is an undocumented limitation (or hopefully just a bug) with thermostatic mode and PWM cannot go lower than 50% in that mode.

@o_lampe that's not a bad idea, assuming they can start turning at a low voltage. But I suppose getting better fans is the real solution. 🙂

Cheers,
Ben.

Hi everyone, i got my duet3 mini5+ wi-fi a month ago and, since then, i was struggling to get a stable wifi connection with my home mesh network.

After reading tons of posts by other users with the same problem (very high ping, slow upload rate, frequent disconnections and, maybe, reconnections)...

No fix worked for me then i started examining the problem... I still got 16/20Kb upload transfer rates, 2.5 to 25 sec ping time and frequent disconnections.

My router is an AiMesh ZenWiFi XT-8 with 2 access points. Someone stated that Duet wifi messes up with Airtime fairness, others with universal beanforming.

So i decided to put another access point (d-link) near the printer and voilà, 700kb/s and no disconnections at all.

I tried disabling everything on the Asus side, but nothing worked.

I'm so sorry that Asus routers and Duet3 wifi modules have that strange incompatibility issue...

Thanks. Will look into it.

Thanks. One last attempt at getting back on topic, what about probe type P5 and K1?

Glad that worked out. Adjustable probing depth could still be useful. Though I think something could still be worked out with conditional gcode and the commands as they are available currently.