3wire fan on 1LC out2 -- unknown pin name

oliof

Hi,
I am using the wait time on the next 3.3 beta to upgrade my hotend -- titanium heatbreak, maxiwat, noctua fan.

The noctua fan comes with 3 wire, and I wanted to connect the yellow wire to get tacho readings from it.

Looking at the 1LC documentation (I have a 0.6 board but it seems the same for 0.6 and 1.0), and the M950 documentation, I changed the following configuration:

M950 F1 C"10.out2" Q5000 (which works)

to
M950 F1 C"10.out2+10.out2.tach" Q5000
This results in the following errors:

Error: M950: Unknown pin name '10.out2.tach'
Error: M106: Fan number 1 not found

Has the pin name changed? Is it maybe not supported on the 0.6 1LC board? Did I mess up the configuration?

fcwilt

@oliof said in 3wire fan on 1LC out2 -- unknown pin name:

M950 F1 C"10.out2+10.out2.tach" Q5000

It appears that you only need to use the board address once.

I just tried it on my test setup and M950 F1 C"10.out2+out2.tach" Q5000 was accepted.

Frederick

oliof

It occurred to me to test this in the meanwhile and I can confirm this works. I guess the need to use a pin on another toolboard for this is rather rare...

fcwilt

@oliof said in 3wire fan on 1LC out2 -- unknown pin name:

I guess the need to use a pin on another toolboard for this is rather rare...

What do you mean?

Frederick

oliof

Imagine more 3 wire fans on the toolhead I would like to read the tacho wire, but no inputs are free -- and I would want to read it off another toolboard or even the main control board. Then it would be useful to be able to set the tacho pin to address.name rather than inheriting the address from the first pin definition.
Maybe this can never work? Then ignore this idea.

fcwilt

@oliof said in 3wire fan on 1LC out2 -- unknown pin name:

Imagine more 3 wire fans on the toolhead I would like to read the tacho wire, but no inputs are free -- and I would want to read it off another toolboard or even the main control board. Then it would be useful to be able to set the tacho pin to address.name rather than inheriting the address from the first pin definition.
Maybe this can never work? Then ignore this idea.

The idea of the 1LC is to keep most of the wiring at the extruder - correct?

Not having used one to date it appears to be designed to support two fans - one for the cold end and one for the part I would imagine.

I can see a situation where you might need more than two fans - a printer I am working on now has two fans for part cooling.

Perhaps post a suggestion to support three fans.

Frederick

oliof

@fcwilt I did run two fans in parallel for part cooling, worked well. And while the idea of the toolboard is to keep the wiring to it, not all real world circumstances keep to the idea space (i.e., for some reason my probe stopped working on the toolboard, but works on the main board ... so I bit the bullet and pulled a longer cable because my debugging went nowhere other than "normal switches work").

fcwilt

@oliof said in 3wire fan on 1LC out2 -- unknown pin name:

@fcwilt I did run two fans in parallel for part cooling, worked well. And while the idea of the toolboard is to keep the wiring to it, not all real world circumstances keep to the idea space (i.e., for some reason my probe stopped working on the toolboard, but works on the main board ... so I bit the bullet and pulled a longer cable because my debugging went nowhere other than "normal switches work").

Darn the "real world" for always getting in the way of what we want to do.

I vaguely recall that some firmware change broke Z probes on expansion boards - but my memory is not what it used to me.

For me the Duet 3 line (other than the Mini) are a work in progress that I am testing on my workbench but will not be using in any printers until things seem as if they are sorted out.

Frederick

oliof

I like to live dangerously (-: this is a project printer. It's too big for most of my prints so it's only an annoyance, but not critical if something doesn't work. And someone has to eat the dogfood so you will get you matured Duet3 experience later on (-:

fcwilt

@oliof said in 3wire fan on 1LC out2 -- unknown pin name:

And someone has to eat the dogfood so you will get you matured Duet3 experience later on (-:

Thank you for your sacrifice - I hope it doesn't give you indigestion.

Frederick