Posts made by duettomio

Never mind. I just found that polarity in the control wires is irrelevant.
Heater works now.

@Phaedrux

the wire resting on the Duett bed connector is the control wire of the lerge module.

@Phaedrux

It is the above mentioned Lerge Mos module 25 A.

@ediik
I just got around picking up where I left off.
It says in the dozuki :" You can use a solid state relay (SSR) to switch the bed heater by connecting its control terminals to the Duet bed heater terminals. Make sure that you get the wires to the + and - control terminals of the SSR the right way round. "

How do I verify which one is positive and is damage possible if I reverse it?
These control wires are very thin.
Thank you

Phrased another way: The bed moves up to make Z get smaller, eventually reaching Z0. Is the switch at the physical top of that movement?

Yes, that's how it is. Sorry about the confusion.

Yes, a mechanical end stop at min height

Hello Everyone,
I am in the process of replacing a lergeX board with a Duet2 in a Two Trees Sapphire s coreXY.
This is my first printer.
So far it’s homing to all axes except Z because I have a dummy carriage installed.
My next step is to install the carriage with the hot end and find Z=0.
The printer has a mechanical and movable end stop at min height; the bed moves down.
The bed has three adjustable screws to level it.

My question is, what is the easiest approach to set Z height properly?

Thank You.

Thank you bearer for your help and pointing me in the right directions !

Right on. Z now moves exactly the requested amount.
Thank You!

My next step is to mount the carriage with the E3d hot end.
So far I've used a dummy carriage holding a sharpie to simulate it.
I know I have to set the end stop again.
What is a good procedure to get it close to the bed and where should it stop?
All I know is to use the bed level screws to set the distance, but where is the starting point?

Cheers

M350 Z16

So (200*16)/8=400

How do I set this in config?

Thanks.
I found Usongshine 17HS4401 has 200 steps/rev and 1.8°
I measured 8mm travel per rev.
I couldn't find the micosteps.

Hello Everyone,
I've replaced a lerge x board with a duet2 ethernet on a Two Trees sapphire s.
So far I've got all axes homing correctly and the end stops set up.
X and Y moves the right amount but Z moves a lot more than requested.
I can't remember what I've entered in the reprap configurator for Z but I need to figure out how to change it.
As far as I know, I have a T8 leadscrew with 2mm pitch (hard to find the specs for it).
I would like to know how to figure out how to measure correctly and make the changes in the config file.

Thank You

Worked great, thank you.

Thank You.
I'll try that today.

Hey Everyone,
I am using the 3 wire end stop switches from my LergeX board, they are labeled C NO NC, but I have no clue how to connect them to the Duet2 to GND, 3V3, STP. I have already tried to connect one, but the board won't start on USB power.
I'll have to re-crimp to the Duet2 connectors since they have different plugs.
Any help appreciated, Thanks.

@dc42
I was confused about that as well. In the wiring diagram it says left to right:
2B, 2A, 1A, 1B so I guess the numbers refer to the phases, not the letters?

as in Phase1, Phase1, Phase 2, Phase 2 ?

Thanks.

@zapta said in lerge x mos module:

am suggest its control can be driven directly from the bed heater output of a board su

Yes, that's it. Thank you.

It looks like it does have a two-wire control connection, but it also uses an adaptor module that ties in the thermistor.

Hi all,
I have a duet3d ethernet and am trying to replace a lerge x board in a two trees sapphire s printer.
The lerge has this mos module powered directly by the ps to run the heated bed.
Is it possible to use it in conjunction with the duet3d?

Thank You, Patrick