Yes, probably. In many ways setting up basic LEDs is the same as setting up a fan. Since duet switches pwm on the negative side you can source your voltage elsewhere and then use a fan or heater pin to control it.
@dc42 could M557 show available Wi-Fi networks (plus signal strength) as well as remembered?
We would need to have a separate command (M552 S3?) to do a network scan and then return the results. It involves changes to the wifi server firmware as well as RRF (and PanelDue if you want to display it there). I'll add it to the work list.
@jmshep That may have been the case in 3.0 because there were still some default pin associations, but in 3.1.1 all default associations are removed and you no longer need to use nil to undefine them. Rather you now must define the pins being used.
SG= stallguard. See page 10 of the datasheet i linked above.
10-bit unsigned integer stallGuard2
measurement value. A higher value indicates
lower mechanical load. A lower value indicates
a higher load and therefore a higher load angle.
For stall detection, adjust SGT to return an SG
value of 0 or slightly higher upon maximum
motor load before stall.
Also I noticed that BigFDM page recommends to use SSRs for this size bed heaters. With Duet 3 it seems that we would be able to drive these with the four IO pins using four SSR or just connect a single SSR's input to OUT0 and then connect these four bed heaters to the SSR.
when mains powered SSR is the way to go for the beds, you could also probably run 4 SSRs off the single output. that would allow you to later reconfigure to use 4 outputs to control quarters of the bed, as well as lower the load and potential need for cooling on each SSR.
(not sure how thermal expansion affects partially heated bed in practical terms, but there are at least on thread on here that deals with it for a large printer).
Okay, so I did small research and I think all problems are solved. A bit of information, maybe someone else will also struggle with similar problem.
1. Using buck/boost converters near signal wires (like probes) might induce noise and cause problems
2. If you struggle with unstable printer work/your voltage readings (in DWC) vary under load (even if PSU ratings are higher than requirements of your setup) check your PSU in diffrent position (horizontal/vertical), if it makes diffrence you probably have problem with cold solder joints - if you are familiar with soldering and electronics - redo solder joints in your PSU - if not, better not to do it yourself.
I did small research for my printer, decided to do some tests with opened enclosure of PSU to measure some things and noticed, when I test it laying flat, there is no problem (in printer PSU is mounted vertically), as soon as I mount it back, problem occured again.
Decided to redo all solder joints on PCB (I couldn't find anything that looked really suspicious) with special attention for filtering sections, added also some lead-solder. After that I don't have any problems like before.
I think problem is solved.