First Layer Way Too High / Extrusion is off?

tmeryhew

M122
=== Diagnostics ===
RepRapFirmware for Duet 2 WiFi/Ethernet version 3.1.1 running on Duet Ethernet 1.02 or later
Board ID: 08DGM-917DA-G4MSJ-6J1F4-3S06K-99PRB
Used output buffers: 3 of 24 (10 max)
=== RTOS ===
Static ram: 27980
Dynamic ram: 93520 of which 24 recycled
Exception stack ram used: 256
Never used ram: 9292
Tasks: NETWORK(ready,368) HEAT(blocked,1224) MAIN(running,1880) IDLE(ready,80)
Owned mutexes:
=== Platform ===
Last reset 00:37:09 ago, cause: power up
Last software reset at 2020-12-20 17:08, reason: User, spinning module GCodes, available RAM 9084 bytes (slot 0)
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0441f000 BFAR 0xe000ed38 SP 0xffffffff Task MAIN
Error status: 0
MCU temperature: min 20.3, current 26.7, max 27.1
Supply voltage: min 12.1, current 12.2, max 12.3, under voltage events: 0, over voltage events: 0, power good: yes
Driver 0: standstill, SG min/max not available
Driver 1: standstill, SG min/max not available
Driver 2: standstill, SG min/max not available
Driver 3: standstill, SG min/max not available
Driver 4: standstill, SG min/max not available
Date/time: 2020-12-21 12:26:23
Cache data hit count 4294967295
Slowest loop: 147.19ms; fastest: 0.12ms
I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
=== Storage ===
Free file entries: 10
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest read time 2.0ms, write time 0.0ms, max retries 0
=== Move ===
Hiccups: 0(0), FreeDm: 169, MinFreeDm: 169, MaxWait: 0ms
Bed compensation in use: none, comp offset 0.000
=== MainDDARing ===
Scheduled moves: 0, completed moves: 0, StepErrors: 0, LaErrors: 0, Underruns: 0, 0 CDDA state: -1
=== AuxDDARing ===
Scheduled moves: 0, completed moves: 0, StepErrors: 0, LaErrors: 0, Underruns: 0, 0 CDDA state: -1
=== Heat ===
Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1 -1 -1
Heater 1 is on, I-accum = 0.0
=== GCodes ===
Segments left: 0
Movement lock held by null
HTTP is idle in state(s) 0
Telnet is idle in state(s) 0
File is idle in state(s) 0
USB is idle in state(s) 0
Aux is idle in state(s) 0
Trigger is idle in state(s) 0
Queue is idle in state(s) 0
Daemon is idle in state(s) 0
Autopause is idle in state(s) 0
Code queue is empty.
=== Network ===
Slowest loop: 155.28ms; fastest: 0.02ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions
HTTP sessions: 1 of 8
Interface state active, link 100Mbps full duplex

tmeryhew

@Phaedrux here is that M98 result

M98 P"config.g"
HTTP is enabled on port 80
FTP is disabled
TELNET is disabled
Warning: Heater 0 appears to be over-powered. If left on at full power, its temperature is predicted to reach 365C
Warning: Heater 1 appears to be over-powered. If left on at full power, its temperature is predicted to reach 413C

tmeryhew

So after deleting M201, M203, M204, M205, M220, M221 from the "Start G-Code" section of the printer settings within Cura, the status quo has changed a little bit.

I also manually leveled the bed with the bed heater set at 50 C and 200 C for the nozzle.

Phaedrux

@tmeryhew said in First Layer Way Too High:

Would it be pulling the Start / Stop gcode from this Preferences menu for what I have called "New Style" printer?

Yes.

If you're still printing too high, you need to change either the position of the Z axis endstop switch so that the nozzle is just touching the bed when it stops, or set the actual distance between the nozzle and the bed in the homeall.g file.

G1 H1 Z-305 F360 ; move Z down stopping at the endstop
G90 ; absolute positioning
G92 Z0 ; set Z position to axis minimum (you may want to adjust this)

G92 Z0 could be changed to whatever the gap is between the bed and the nozzle. So if the nozzle is 1mm above the bed when the endstop switch is triggered, you'd use G92 Z1.

Getting the bed nice and level will be the first thing. Beyond that you would need to use mesh compensation with a Z probe to measure multiple points on the surface of the bed to be able to adjust for a curved bed or other imperfections.

tmeryhew

@Phaedrux

So I believe I may have solved the issue of the extruder being too high off the bed, maybe. As soon as I can I will instal a Z probe as it seems that’s the best way to go.

But check out my pictures below, what would cause my test prints to come out like this?

Phaedrux

If that's the bottom layer, likely over extrusion, either from being too close to the bed or extruding too much plastic.

Maybe give this a read.

https://duet3d.dozuki.com/Guide/Ender+3+Pro+and+Duet+Maestro+Guide+Part+4:+Calibration/40

tmeryhew

@Phaedrux

I added some more pictures to that post. I didn’t think you’d get to a response so quick!

So are you saying I should go through and calibrate extruder steps per mm? Step 5 on that link you sent me?

Also, since you seem to have so many answers to my questions, what do I need to do to turn on the part cooling fan (fan 0)? That seems to not be turning on automatically, even though I can go in and turn it on with the G-code commands.

tmeryhew

Holy crap, I did that test and this sucker pumped out 395mm of filament when I ran the "G1 E100 F60" code in the console....

Phaedrux

@tmeryhew said in First Layer Way Too High / Extrusion is off?:

Holy crap, I did that test and this sucker pumped out 395mm of filament when I ran the "G1 E100 F60" code in the console....

Sounds about right based on those photos.

Phaedrux

@tmeryhew said in First Layer Way Too High / Extrusion is off?:

; Fans
M950 F0 C"fan0" Q20 ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0.9 H-1 ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"fan1" Q20 ; create fan 1 on pin fan1 and set its frequency
M106 P1 S0 H1 T45 ; set fan 1 value. Thermostatic control is turned on

For the fan problem, are you use 20Hz works for the fans you have?

tmeryhew

@Phaedrux I honestly have no idea if 20 hz works for them or not. I was afraid of blowing them up, so I went on the super low end for that.

I went with the default number on the mA for the motors also. I believe each of my four steppers are rated at 1.5A. And I kept it at the default 800mA that was auto populated by the config tool.

As for the fans, both are set to 20 hz and the extruder fan comes on no problem so far. But the part cooling fan hasn't come on at all yet.

Phaedrux

Try 500Hz for the fans. That's the default. Valid values go up beyond 30000, so you'll be fine.

For the motors, the ideal current is ~60 to 85% of the rated current for the motor.