I tried doing the same thing and gave up. Now I use a BL Touch and it works good enough although not as repeatable as a good old fashioned micro switch. Never bothered to make a servo to deploy because at the end of the day they are 3D printers not milling machines and they do not need the accuracy. Yet…....

OK, that's good to hear, thanks for the super speedy response.

Probably best to google that for your specific router.

It seems to me that most slicers would benefit from having two start scripts: one run right at the start of the file, and another run after the heaters are up to temperature.

Hi

I managed finally to get the heaters running by inverting the logic of the power mosfets. Now the heater channels 3 and 4 are working the same as the standard 1 and 2.

One curious thing popped up though: "Temperature reading fault - Temperature above limit" on heaters 1-3. This pops up in the console when heating to 260 degrees and when the temps rise a bit over before settling (about 265 degrees).

I put the M143 S340 to not trigger the safety turn off but anyway around 265 the 3 heaters get this error message and shut down while heater 1 continues to hold nicely the target temperature. Heaters 1 and 2 are connected to Duet the "normal" way.

EDIT:

I managed to run the autotune for all the heaters after several tries with different PWM:s ( ended up using P0.55 and P0.6 to get the tune done and not ending in error).
Nothing changed regarding the behaviour of heating up - H2-4 still get the error message "Temperature above limit" allthough there is more than 70 degrees overhead (M143 S340).

EDIT: Fixed! By setting the M143 separately for all the heaters (for example M143 H1 S300)

Oh sry, i should do the important Things first and after that he can explain what he wanna give us with that Category/Feature. 😉

I could. I'm in Sweden.

It's just a bummer that firmware 1.19 hangs the printer, whereas with 1.18 I could just ignore the bad driver and use E1 instead without any issue at all.

Thanks

I got it, both are updated now to 1.19

Ian, I presume you tuned the new heater? You can increase the A parameter to reduce overshoot.

Thank you for your answers, I'll look at it later; I have to look at another problem "I really have no luck with this machine"
I miss the update of the DUET WIFI

Hm. Pretty stumped.

I guess the windings are good on the motor (hooked them up to some LEDs and those are flashing when I manually turn it. ) Any tips on troubleshooting? Tomorrow I'll get the pinout on the steppers and hook it up manually with jumpers to rule out faulty wiring.

Edit 2:
Never mind. Faulty wiring. WTF level is at 10/10. Thanks guys. @_@

I'm getting a beer.

Thanks guys! 😄 I was mostly wondering about grounding and static but it sounds fine by popular opinion. 🙂 @pcsentinel I'll give your case a shot once I get my printer going again.

Thanks but if I were awesome, I'd have read the release notes and not made the same mistake, which is the only reason I knew what the problem was. Anyway, glad you are sorted.

Have you read https://duet3d.com/wiki/Configuring_RepRapFirmware_for_a_Cartesian_printer#Homing_Z ?

I honestly don't remember, but if I had to guess Slic3r.

If you are using an older Duet (0.6 or 0.8.5) then the bed thermistor T parameter defaults to 10K. So if you are using a 100K thermistor, that would account for the problem.

Eyyyy it works! 😄 Pretty painless! Thank you!

Well, I do have only 1 heater!

This command is in a macro written by the web generator; don't know why it used 2 heaters…

Thanks.