@fcwilt said in The rotating magnet filament monitor is out of stock eveywhere:

@the_dragonlord said in The rotating magnet filament monitor is out of stock eveywhere:

would it be possible to use a switch as a filament sensor?

Yes but it only tells you if the filament has broken or run out.

The failure of filament to feed is of importance and thus the existence of sensors like the laser and rotating magnet designs.

But I imagine you already know all that.

Frederick

sure, infact I'll use a simple switch only for the time needed for the magnet sensor to be available again

@Phaedrux said in How to use a LED Strip with Duet 2 WiFI?:

I think you're overthinking it. The fan ports use PWM by switching the negative side and don't require the 4 pin that a true 4 wire PWM fan does (though that is an option, it's not what you need for a simple LED strip).

Just connect your LED string to Fan2 and control it like a regular part cooling fan.

M950 F2 C"Fan2" Q500
M106 P2 S255

thanks soooooo much

@dc42 I'm trying to configure it, I used the commands:

M950 S0 C"exp.heater4" to map the heater4 pin for the servo indexed 0,

I've attached the GND and the exp.heater pins to a command port of a Mosfet but if I lunch the command

M280 P0 S100000

To try to give a 100000 micro second (a second) pulse just to try nothing happens and the Mosfet doesn't trigger....so I'm afraid that the Mosfet doesn't trigger with the high value given by the remapped heater4....I need a 12V PWM output to trigger the mosfet, I think I could use a PWM fan, could I? Honestly I've tried to read the documentation for how to comand a PWM fan via gcode but I didn't understand so much....I've found this example:

M950 F2 C"!Fan2+exp.pb6" Q25000 ; fan 2 is a 4-wire PWM fan so invert it, use high PWM frequency, tacho connected to PB6 on expansion connector

But I can't understand because looking at the wiring diagram FAN2 isn't a 4 pin
And I don't understand why I had to use an expansion pin too....so as you can see I'm a looooooooooooooot confusing and I'd better not to go with "trial & error" because I don't want to burn the board....the main question is: can I use the FAN2 2 pins to trigger the mosfet with 12vdc and start, modulate the PWM, and stop the FAN (led stripe) via gcode? In case how?
Thanks a lot!

@jay_s_uk said in Some other little hints for starting...:

You can adjust the M208 minima to account for axis overhang.
E.g. if when you home the X axis, the nozzle is only on the build plate when you get to 10, set the minima to -10. Then when it homes, the home position is -10 and not 0.

For the z probe, read this https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe

Thanks! For the M208 i can use the method to track two diagonals in the plate (using paper tape) and the send the nozzle G1 X165 Y165 and measure the difference and store them in config.g with the M208?

Good morning, the moment I'll mount my Duet WiFi to my custom CoreXY is getting really closer! As I told in my previous posts I come from the Marlin world (well, to be honest from a Marin's fork) so for me it's now all a little hard to understand how RFF works so I know I'll have to face a lot of studying to understand it well. For now I need some basic infos to make my printer to start moving....first: the printer is based on a TronXY X5S chassis but the X gantry as well as the extruder plate has been totaly changed from the original ones so the first thing I need to know is how adjust the X and Y offsets for the nozzle to make it to be placed in the right coordinates of the plate. I try to explain better: my plate is 330x330 mm and I want that if I send the nozzle G1 X165 Y165 the nozzle will be placed exactly in the middle of the plate. Marlin has a feature to do so, how can I make this adjustment in RFF?
Second question is about the Z offset. I'll use an orginal BLTouch V3.1 as Z probe but I can't find how to calculate and "store" the Z offset value....to calculate the Z offset in Marlin i did the following steps:

1. M851 Z-4
2. G28 Z0
3. Slowly lower the Z until the nozzle starts to scratch a piece of paper placed between the nozzle itself and the plate
4. The new Z offset will be the actual reading of the Z minus 4 plus 0,01 for the paper thickness
   After that M851 Z new_value and M500 to store it in EEPROM

except for the M500 is this a correct procedure even for RFF? In case it's not how can I calculate and store the Z offset?

Least but not last a question: is it possible to have the X and Y homing in the front left corner of the plate and the Z homing in the center of the plate?

Thanks and sorry for the long post (and for the bad English as well)
Andrea

@Phaedrux said in The rotating magnet filament monitor is out of stock eveywhere:

And here I thought it was poly propylene elastomer.

I think it stands for Personal Protection Equipment----

@dc42 said in The rotating magnet filament monitor is out of stock eveywhere:

We were all set up to move to an improved injection-molded housing for the magnetic filament monitor. Then COVID struck, and the supplier concerned has quite reasonably decide to devote its resources to making PPE instead.

uh, ok... but have you got a reasonably forecast for the time needed to the device for be delivered again? are we talking about days, weeks, months or no forecast at all?

@fcwilt said in The rotating magnet filament monitor is out of stock eveywhere:

@the_dragonlord said in The rotating magnet filament monitor is out of stock eveywhere:

would it be possible to use a switch as a filament sensor?

Yes but it only tells you if the filament has broken or run out.

The failure of filament to feed is of importance and thus the existence of sensors like the laser and rotating magnet designs.

But I imagine you already know all that.

Frederick

sure, infact I'll use a simple switch only for the time needed for the magnet sensor to be available again

@achrn said in The rotating magnet filament monitor is out of stock eveywhere:

@the_dragonlord said in The rotating magnet filament monitor is out of stock eveywhere:

what's the gcode to add to the firmware to configure and make the sensor work? even to configure the pause in event of run out

M591

I use

M591 D0 P2 C"io8.in" S1

because my switch is wired to pull input 'io8.in' low when the filament is present, but it will depend what firmware and hardware you're running - see the description at https://duet3d.dozuki.com/Wiki/Gcode#Section_M591_Configure_filament_sensing

excellent my friend, thanks!

@achrn said in The rotating magnet filament monitor is out of stock eveywhere:

@the_dragonlord said in The rotating magnet filament monitor is out of stock eveywhere:

would it be possible to use a switch as a filament sensor? I own some sensors with three wires, S, V, G of course just to monitor the presence/absence of filament...

Yes, I have a microswitch with a roller on a lever snapped into a small print that fits over a stub of PTFE tube sticking out from the extruder.

There are numerous of these on thingiverse, e.g. https://www.thingiverse.com/thing:2577717 but the one I tried (that one) didn't hold the microswitch I had in quite the right place, so it didn't trigger.

So I rolled my own, which is ugly, slightly fudged in places, but highly parameterised and works for me. You're welcome to the files, though they are offered without any support or warranty:
runout_sensor.scad
runout_sensor.stl

If your extruder moves around (mine doesn't) you might want a more securely located switch mount.

what's the gcode to add to the firmware to configure and make the sensor work? even to configure the pause in event of run out

@achrn said in The rotating magnet filament monitor is out of stock eveywhere:

Yes it's out everywhere. I've been looking for it since about July, though with reducing levels of effort, which is now sporadic at best. I understand the delay is to do with production of the casing.

However, since I disabled the optical filament sensor on my Prusa when I was doing a lot of clear and black PETG (neither of which it liked), and I don't particularly miss it, I might never get round to putting one on the other printer (which is supposedly waiting for the rotating magnetic). It has a microswitch pesent/absent already, and that's most of the required functionality.

would it be possible to use a switch as a filament sensor? I own some sensors with three wires, S, V, G of course just to monitor the presence/absence of filament...