Posts made by dm86

Glad that was simple. Frustrated it took 4 hours of trying all sorts before asking on here!

Don't know how I ended up with that combo but now working. Thanks.

Hi all,

I'm trying to move from a differential IR sensor to a BL Touch and I getting poor reading accuracy.

I'm using a Duet2 Wifi & a DueX5. Firmware Beta3.2

I've followed all the instructions I can find but with the different firmware versions etc find it a little confusing so it's likely I've just made a configuration mistake.

Here is what I think is the relevent config. I'm not using any heaters on the Duex

; BLTouch
M558 P9 C"^zprobe.in" H5 F120 T3000  				; BLTouch connected to Z probe IN pin
M950 S0 C"!duex.pwm1" 						; create servo/gpio 0 on pwm1 on Duex5
M280 P0 S10 							; send control signal to BLTouch through servo/gpio 0
G31	P25 X37.5 Y28.25 Z1					; BLTouch set offset	
M557 X30:260 Y30:520 S20                           	        ; define mesh grid

I'm then sending these through the console but get nothing.

Pin Down - M280 P0 S10
Pin Up - M280 P0 S90
Self-Test - M280 P0 S120

The selftest works on power up so I don't think its the 5V jumper issue highlighted on the troubleshoot page. Photo of my not so neat wiring!

Is there something I'm missing?

Thank you

Excellent, thank you @chrishamm

As a quick update I now have it 'working', well everything moving as expected at least.

Fundamentally all that confused me was this line in the GCODE library;

If you have two motors on your Z axis, physically connected to Z and E0 stepper drivers, configured with M584 Z2:3, set M906 Z200, not M906 Z200:200

I incorrectly assumed this applied to extruder motors too, where in reality it seems it does not. Not sure who maintains this text but maybe worth adding an extra note in there to make that a little clearer. Although with hindsight the previous included example of M906 X300 Y500 Z200 E350:350 should have been a clue.

Once I went through and added all the other standard motor parameters everything started working. As my extruders are not totally identical (metal BMG clone on HE & OG one on frame) I'm going to calibrate both extruders individually and go for a test print. Will report back after a few prints.

Thanks all for your input

@percar Good to know I'm not on a dead end! I suspect your right and will end up with this config but would like to try and make use of my spare drivers if I can. I don't know if a second small motor will really help that much (plus I don't have an identical one to hand!)

@deckingman Thanks, really helpful.

Sorry I forgot to put it, beta3.2 at the moment on Duet2 wifi +Duex5.

Seeing as I don't understand the T0 reference, probably not! Sorry could you give any more detail on what I should be including there?

Will have another quick go today and then post full config.g if I don't get it working.

@chrishamm
Could I set 50% extrusion ratios on both & half the steps per MM?

Yes, this isnt clear to me. In the Gcode library it has as example of ;

M906 X300 Y500 Z200 E350:350

but then says;

Example: If you have two motors on your Z axis, physically connected to Z and E0 stepper drivers, configured with M584 Z2:3, set M906 Z200, not M906 Z200:200

So maybe your right these E & Z are treated differently. If so that's great because I could run a much bigger stepper on the frame with a higher current. I could run an M906 E500:1200 to drive these for example.

Does this however mean I have to add the other extruder setup lines such as M350, M92, M566, M203, M201?

I guess it would be good to get confirmation that M567 P0 E1:1 will do what I think and set extrusion rates of 100 on both motors and that I'm not barking up the wrong tree!

On the weight issue I am trying to have my cake and eat it, or at least have the best compromise I can find. I'm currently running water cooled to run high enclosure temps so Zesty or similar would cost me that ability. Perhaps I just need another printer for faster prototyping!

I've got a significant reduction in ringing at higher speeds by downsizing so would rather stay with this setup if I can find a way.

In an attempt to reduce carriage weight I've reduced down to a pancake stepper on my BMG extruder. This works well most of the time but every now and again it will skip steps. Increasing current causes it to overheat and make it skip more.

Before I go back to a larger stepper I wanted to try running two steppers with BMG's in a push/pull type config. One mounted on the frame like a standard bowden setup leading to a direct drive type one on the hotend. However having problems with the setup.

If running both from the duet am I correct in that I can't configure different motor currents from each?
Would I be better just running with a physical splitter?

There are the lines I feel are needed but now neither motor is turning. Any ideas?

M569 P3 S0                                         ; physical drive 3 goes forwards
M569 P4 S0                                         ; physical drive 4 goes forwards
M584 X0 Y1 Z7:8:5:6 E3:4                           ; set drive mapping
M563 P0 D0:1 H1 F0                                 ; define tool 0
M567 P0 E1:1				           ; Set Extruder Drive Multipliers 1x each

Does anyone know what enclosure temperature @dc42 IR sensor should be happy up to?

What would be the weak link and how could it be improved? I'm not great with electronics but I'm guessing its the large electrolytic capacitor?

@Veti Thanks again Frederick, got it working now. However I couldn't find reference to the S-1 command anywhere, do you know where this is documented?

The GCODE Library just appears to just say,
"Snnn Tolerance when probing multiple times, default 0.03mm".

Does -1 just force the max number of probes?

@Veti I have my bed on a blue silicon thermal transfer pad which gives a really good backing for the sensor. I've been using it well for quite a while but I've found these sensors lose accuracy after a while. I've always assumed its the cap drying out but never really investigated.

Multiple probes seems as easy way to get a little extra life before replacing.

My printer is connected through a ZWave relay that lets me turn it on and off remotely as well as monitor power consumption.

I'm using a 240v heated bed through an SSR and I'm quite aware these things tend to fail open. I have a thermal fuse attached to the bed but wondered if I could add an extra layer of protection.

Is there a way to make Duet do a webcall?
Is there a way to detect thermal run away and then complete an action?
If those things are not possible how does Duet react in a thermal run away situation, would it just turn off the ps control pin? From this I assume so. https://duet3d.dozuki.com/Wiki/FireSafety

@fcwilt Thanks, totally missed that. For some reason was expecting it to be on G30.

Hi all,

I'm getting fairly variable reads using the IR sensor on glass.

Is there an example anywhere of taking multiple reads and averaging them out? I can't seem to find it but maybe I'm searching thewrong terms.

Thanks

Thanks @oozeBot, would be interested to see.

I use one of these at the moment and they are great value and do the job just fine.

However I'm an idiot and have fallen foul of user error a few times. Either leaving it on for no reason for ages, or leaving it set for Nylon and ruining a roll of PLA So would like to find a better way to do it if I can.

To keep it dry.

Hi all,

Just setting up a new printer, loosely based on the HEOVRT and I would like to include a heater in my filament enclosure. I already have a heater in the print enclosure.

Is there a way to get the filament enclosure heater controlled by the Duet board? I'm running Duet2 + X5

Can't seem to find anyone thats done this but maybe I'm searching the wrong thing? Any tips!?

TIA

I have on my Duet 2 but I'm having wifi problems with that. I then had problems trying to upgrade my Maestro but as the printer is going nearly 24/7 haven't been able to solve that yet. Will try and take another look tomorrow.

I have tried it on both boards and Mag + Agc values report the same but I don't have working wifi on the Duet 2 I haven't been able to try much of a test print.

OK I've taken it apart, checked it, light sanding on one side, tightened it all back down and no improvement on Mag & AGC values. Sensor works intermittently.

Please can someone advice whats going on and how to proceed please?