Not related to 3D printers but I regularly heat large metal tubes at work and use many heaters. Up to 40 on a system and each one controlled independently. Each heater does have an effect on the others but usually it is minimal.
It might be a good idea to do that but it may also complicate the slicing setup.
I’m not sure if that was helpful or not.
@Phaedrux well I was able to get the bed cleared off and run my G32 (bed.g) which I added a link to my macro and after the macro I added the M500 P31 in the bed.g and that saved the offsets correctly. So that gets me a work around.
Luckily you are using thermocouples. If you wire them all together the actual voltage signal will average out. So if you just take all the +ve leads and connect together on the same +ve terminal and take the -ve leads to the same -terminal it will average out the three sensor readings. Its a pretty old school trick.
good luck.
What about just adding isolation mounts to the Nema23 motors. They are the source of the vibration so if you isolate them it should be greatly reduced.
@fcwilt That is good to know. I will grab a meter and check that voltage level of that switch.
It will likely be in this part of your config.g file.
G31 P25 X-31 Y0 Z0.6 ; set Z probe trigger value, offset and trigger height
M557 X20:215 Y20:215 S64 ; define mesh grid
Likely the X-31 is no longer accurate. With the probably area being X20-215 and a -31 offset it could still probe 11mm off the bed (I think). But those are the parameters that you need to adjust to get the probe back on the bed.
@Phaedrux maybe he has the same issue I had and it is interference with his stepper motors. It possible it was working for testing then he tried to print and now it doesn’t work? We can only guess.
@mrenz999 Try sending an M18 E0 command before you attempt to use the probe.
The reason that was happening it is was telling it to go to extruder position 2 from wherever it last was. If it is using absolute moves then that could be position 10000 or some other large number.
Looking at the GCode that S3D generates it seems to use absolute positions but every feature or so it sends an G92 E0 which essentially resets the counter.
Another way to do your end script would be to
G92 E0
G1 E-2
@lukas-aurarum try adjusting the H value in you M558 command that sets up the probe. I think default is 5mm. The z axis will travel an equal distance in the negative direction as the H value. So it will move 10mm before it gives up with the default of 5mm.
Hello all, I'm not sure if this is allowed or not on here but I'm looking for peoples thought and experiences with the two common filament sizes. I have printers that use both filament types, and I've been fighting with the one that uses 3mm the most. I recently rebuilt it/customized it by adding the Duet 3 board and fitted it with the E3D titan aqua extruders (in 3mm) with volcano hotends. I did this because it was a 3mm machine before and I had a large supply of 3mm filament. It is also a large format printer with build volume of 334mm x 374mm x 588mm and I like to use 0.mm up to 1.2mm nozzles.
One of the things that I have been fighting with is the mass flow of filament. I'm using a print speed calculator to help me figure out how quickly I should print, and I'm finding that I can't print anywhere near the limits that this calculator shows. I find that I'm okay to print upto a filament extrusion speed of about 2.5mm/s which is about 33% of what that site tells me a Volcano should be capable of.
There is an interesting page that give a good explanation and seems to be consistent with what I have observed when it comes to the flow rate and extruder pressure.
I'm leaning towards converting the machine to 1.75mm filament in hopes that I will be able to get closer to 75% of the theoretical limit of the volcano. I would really like to be able to lay down a 1.2mm x 0.6mm tool path at a speed of 40-60mm/s but to do that I need to extrude close to 5mm/s with 3mm filament or 15mm/s with a 1.75mm filament.
Anyone have similar experience? Would I be better off staying with 3mm filament and using a super volcano?
Thanks for thoughts.
@educatingsavvas
I just wired up one of these and it works too.
One thing to note is that using less than 3000hz seems to result in the generation of a 0-10v signal that the VFD sees as oscillating and then it changes frequencies a lot. It ramps up and down 10’s of hertz.
I was going to try that this morning but first I’ve connected an oscilloscope to the pul +/- wires to see what signals I can see just to make sure the software is sending pulses. So far I’m not seeing any signals. Just some repeating noise in the range of 30ms. I must have something wrong in my config.g.
Edit: They are working now. I’m not certain what I did to get them working I made some changes to my end stops and my spindle tool and all of a sudden then work, both with the +/- 3.6V and the use of a common 5V positive input.
Oh, where did you put the 5V power supply that you used then? Or did you run 5V to all the +ve terminals then the -ve to the expansion board? Maybe my issue is I’m hoping to run at the highest steps possible 51200 I think.
Did you find you have to use the 5V rather than the 3.6v on the expansion board? I just hooked some up and they don’t appear to work using the +/- 3.6V.
I guess I change the wiring to use the 5V and see if that works.
After looking at the documentation for the arm chip it looks like I need to enable the pull up resistor. I’ve done that and now the inputs work. I’ve also named them with the exp. prefix and that seems to work.
Hello everyone.
I've got my CNC electronics all wired up but I'm having some issues that hopefully someone can help me with.
I'm using the duet2 wifi with the external driver expansion board. I bought a longer ribbon cable so that I could utilize the e2_stop - e6_stop pins from the expansion header. I'm having a tough time finding any documentation on how to utilize those pins correctly.
I was able to find some forum posts that call them for endstops using the exp. prefix for the pins when used directly off the board, and duex. prefix if they are using a duex board. I'm not using a duex board so I assume that I should be using the exp. prefix. so I have
; Endstops
M574 X1 S1 P"exp.e2stop" ; configure active-high endstop for low end on X via pin xstop
M574 Y2 S1 P"exp.e3stop+exp.e4stop" ; configure active-high endstop for high end on Y via pin ystop and on e0stop
M574 Z2 S1 P"exp.e5stop" ; configure active-high endstop for high end on Z via pin zstop
for my endstops. I have noticed that there is not voltage potential between the e2_stop pin and ground, so to actually use those pins do I have to apply 3.3V, or 0V to make that work?
My hardware is currently using a mechanical relay which closes between e2_stop and ground. If I just replace then ground with the 3.3V line would that work correctly? Would I need a 1k resistor to limit the current draw on the 3.3V line?
Here is my config.g it is not complete but I'm just getting started.
Thanks for your help.
; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.3.0 on Thu Aug 19 2021 13:14:05 GMT-0600 (Central Standard Time)
; General preferences
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
M550 P"CNC Router" ; set printer name
; Network
M552 S1 ; enable network
M586 P0 S1 ; enable HTTP
M586 P1 S0 ; disable FTP
M586 P2 S0 ; disable Telnet
; External Drives
M569 P6 S1 R1 T5:2.5:5:7.5 ; external drive 6 goes forwards requires an active high enable, 5us minimum step pulse, 2.5us minimum step interval, 5us DIR setup, and 7.5us hold time
M569 P7 S1 R1 T5:2.5:5:7.5 ; external drive 7 goes forwards requires an active high enable, 5us minimum step pulse, 2.5us minimum step interval, 5us DIR setup, and 7.5us hold time
M569 P8 S1 R1 T5:2.5:5:7.5 ; external drive 8 goes forwards requires an active high enable, 5us minimum step pulse, 2.5us minimum step interval, 5us DIR setup, and 7.5us hold time
M569 P9 S1 R1 T5:2.5:5:7.5 ; external drive 9 goes forwards requires an active high enable, 5us minimum step pulse, 2.5us minimum step interval, 5us DIR setup, and 7.5us hold time
M569 P10 S1 R1 T5:2.5:5:7.5 ; external drive 10 goes forward requires an active high enable, 5us minimum step pulse, 2.5us minimum step interval, 5us DIR setup, and 7.5us hold time
; Disable internal drives
M569 P1 R-1 ; disable physical drive
M569 P2 R-1 ; disable physical drive 2
M569 P3 R-1 ; disable physical drive 3
M569 P4 R-1 ; disable physical drive 4
M569 P5 R-1 ; disable physical drive 5
; Map axis drives
M584 X6 Y7:8 Z9 A10 ; set drive mapping
;M350 X64 Y64 Z16 E16 I0 ; configure microstepping with interpolation
; Set drive speeds
M92 X104.47 Y104.47 Z640.00 A420.00 ; set steps per mm
M566 X100.00 Y100.00 Z60.00 A120.00 ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z180.00 A1200.00 ; set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z20.00 A250.00 ; set accelerations (mm/s^2)
;M906 X800 Y800 Z800 A800 I30 ; set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout
; Axis Limits
M208 X0 Y0 Z0 S1 ; set axis minima
M208 X1250 Y2480 Z330 S0 ; set axis maxima
; Endstops
M574 X1 S1 P"exp.e2stop" ; configure active-high endstop for low end on X via pin xstop
M574 Y2 S1 P"exp.e3stop+exp.e4stop" ; configure active-high endstop for high end on Y via pin ystop and on e0stop
M574 Z2 S1 P"exp.e5stop" ; configure active-high endstop for high end on Z via pin zstop
; Z-Probe
;M558 P1 C"zprobe.in" H5 F120 T15000 ; set Z probe type to unmodulated and the dive height + speeds
;G31 P500 X0 Y0 Z2.5 ; set Z probe trigger value, offset and trigger height
;M557 X15:215 Y15:195 S20 ; define mesh grid
; Heaters
;M308 S0 P"bedtemp" Y"thermistor" T100000 B4138 ; configure sensor 0 as thermistor on pin bedtemp
;M950 H0 C"bedheat" T0 ; create bed heater output on bedheat and map it to sensor 0
;M307 H0 B1 S1.00 ; enable bang-bang mode for the bed heater and set PWM limit
;M140 H0 ; map heated bed to heater 0
;M143 H0 S120 ; set temperature limit for heater 0 to 120C
;M308 S1 P"e0temp" Y"thermistor" T100000 B4138 ; configure sensor 1 as thermistor on pin e0temp
;M950 H1 C"e0heat" T1 ; create nozzle heater output on e0heat and map it to sensor 1
;M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit
;M143 H1 S280 ; set temperature limit for heater 1 to 280C
; Temperature sensors
M308 S0 Y"mcu-temp" A"MCU" ; create mcu temperature
M308 S1 Y"drivers" A"Stepper driver" ; create driver temperature
;M308 S2 P"TC0" Y"thermocouple-max31856" A"box" ; create enclosure temperature type K sensor
; Fans
;M950 F0 C"bedheat" Q500 ; create fan 0 on pin bedheat and set its frequency
M106 P0 L50 T30:45 H4 ; set fan 0 to minimum of 50 value. Thermostatic control is turned on based on MCU temp
;M950 F1 C"fan1" Q500 ; create fan 1 on pin fan1 and set its frequency
;M106 P1 S1 H1 T45 ; set fan 1 value. Thermostatic control is turned on
; Tools
M563 P0 S"Spindle" R0 ; define tool 0 as Spindle 0
M950 R0 C"bedheat+e0heat+e1heat" Q500 L0:18000 ; spindle 0 uses bedheat for RPM pwm, e1heat for forward, fan2 for reverse
G10 P0 X0 Y0 Z0 ; set tool 0 axis offsets
G10 P0 R0 S0 ; set initial tool 0 active and standby temperatures to 0C
; Custom settings are not defined
M453 ; Make CNC board
I ended up ordering a long ribbon cable and just split some of the wires out. I don’t know how to post a photo or I would. Show what I did.
@phaedrux
That I didn’t do yet.
@phaedrux said in Wifi issue duet 2 after RRF3.3 install:
M997 S1 P"0:/sys/DuetWiFiServer.bin"
The M997 did the trick. My wifi is back online.
Thank you very much.