@martin7404 Thank you Martin! With these values I can get it to heat up until 70C without any errors. I still wish there would be a better solution like a "dumb" heater but at least I can work with it now

@jay_s_uk Unfortunately this is also sold out everywhere. I contacted the retailer and they will send me a new pi4 as soon as they have on stock for me to test it. I will let you guys know if it helped

@dc42 Thanks for these explanations! I tried again all shapers with a value of 0 and 0.1 and didn't see a lot of a difference. I got to really good results now that I did these changes:

1. Changed Acceleration on X from 3K to 6K didn't make it any worse but going down from 3K to 2K on Y made significant improvements.
2. Jerk Values have been on 400 on X and Y and cause the printhead to take corners very harsh. Running 1000 now and the printhead moves a lot smother.
3. I had two frequencies in my accelerometer data: 4.8Hz(x) and 53.5Hz(y). The 4,8 Hz didn't do a lot of improvement but the 53.5Hz helps a huge amount on the X Vibration. The resonance on Y access didn't really improve with input shaping but only with lower acceleration however the resonance introduced by X went significantly down.

Here a Ringing Tower with 140mms/s where I tuned different shapers with no Shaping at top.
Each segment is a different Shaper algorithm with S0 and S0.1. They all do a great job compared to no shaping:

This Ringing Tower uses only the EI3 53.5Hz S0 Shaper but is increasing Y Acceleration each layer. Best Result was at 2K. The Shaper seems to not affect Ringing on X Axes introduced by Y Axes Vibrations:

@jay_s_uk Thanks! I just had a read through it and unfortunately the C parameter got deprecated for the final 3.4 release. I will have to play with the E/K parameters although it reads like they have a different purpose(Cooling Curve) than the C.

@infiniteloop I'm actually quite sure that a 3 Pin Fans third wire is Tacho signal and only the 4 Pin Fans are PWM controllable. The Speed is controlled via the supplied Voltage. https://digitalworld839.com/3-pin-vs-4-pin-fan-difference-between/

@infiniteloop That's interesting! I didn't came across these yet. The Ones I bought had 3 Pin headers and are the following: https://www.blacknoise.com/datas/downloads/datasheets/TData_BSF40_122012_de_en.pdf
Unfortunately they don't mention anything about the pinout So I assumed they have a Tacho Signal.

@infiniteloop I'm actually quite sure that a 3 Pin Fans third wire is Tacho signal and only the 4 Pin Fans are PWM controllable. The Speed is controlled via the supplied Voltage. https://digitalworld839.com/3-pin-vs-4-pin-fan-difference-between/

@dc42 They didn't try to start up directly after powering on the board. However i tried a bit around and after removing the TACH pin the board has no issue starting up. Fans are working as expected now. Since I do not need the TACH as they are fully on anyways I can leave it like this. Not sure why it was causing the issue though.

@jay_s_uk I thought about that too but wonder why I have no Problem using the fans after the Boot then.
I connected Positive Wire to "V_OUTLC1", "Tachowire to "out5.tach" and the Groundwire to "out5".

The documentation says this is PWM V_FAN. Do I need to set something up in config to change the Fan Type to Voltage Controlled instead of PWM maybe?

Hi Duet Minds!
I had my Duet 6HC running with a Fan (2Wire) connected to OUT_4. This Fan is for heated chamber and only sometimes used. I now added 2 more fans (3Wire) to cool the XY Motors on OUT_5 and OUT_6. The Jumper is set to 12V.

When I start the Board now it will not boot but when I disconnect any of the two new fans before startup it will boot just fine. After boot I can connect them again and control them without any issues.

The Manual States there should not be anything connected to VFUSED if the Jumper is set to 12V and I don't have anything connected there.

Any Ideas what could cause this or what to look out?

Thanks!

@martin7404 Thank you Martin! With these values I can get it to heat up until 70C without any errors. I still wish there would be a better solution like a "dumb" heater but at least I can work with it now

@martin7404 Thanks! I will give it a shot. My heater element is 300W so it's fairly similar. I'm curious about the C parameter though as the docs say it's not supported anymore.

@jay_s_uk My current line is "M307 H2 B1 R0.016 D60" E&K value don't positively influence the successrate. Also all parameters seem to influence each other. So i can't go lower on R than 0.016 but if I set E&K on something i can't even go lower than 0.1.
I changed the Deadtime to 330 (that's the max) and this way it takes quite a bit longer until the fault occurs.

@jay_s_uk So I played around with E and K but I couldn't get the heater to stay on for longer without having the same error again. I also increased the dead time to 45 without any change. I think I don't understand how E and K fundamentally work. In the documentation there was the C parameter which simply said how long in seconds it would take for the heater to reach temperature but it was deprecated in favor for K and E. The docs say this is the formula: K*((Th-Ta)/100)^E. What is taken as the ambient temperature? I'm getting a bit frustrated as the only way I can heat the camber currently is manually increasing the temp by 1C at a time.

@jay_s_uk Thanks! I just had a read through it and unfortunately the C parameter got deprecated for the final 3.4 release. I will have to play with the E/K parameters although it reads like they have a different purpose(Cooling Curve) than the C.