ok - got this a couple of times now
MCU 'ercf' shutdown: Timer too close
This often indicates the host computer is overloaded. Check
for other processes consuming excessive CPU time, high swap
usage, disk errors, overheating, unstable voltage, or
similar system problems on the host computer.
Once the underlying issue is corrected, use the
"FIRMWARE_RESTART" command to reset the firmware, reload the
config, and restart the host software.
Printer is shutdown

Hello Ette - more of a question than an issue but thought the response might help others.

Between all the different fittings (ECAS, Pressfit, UM2, PC4-M10, PC4-M6, Straight-through, etc.) I'm trying to understand if there is a particular benefit of using ECAS over say PC4-M10?

I happen to have a number of PC4-M10 fittings on-hand and wondered if I could adapt the step files (my CAD skills permitting) and change the Buffer Cross to use a PC4-M10 fitting instead of ECAS?

Could you share some insight of why ECAS might be better? Also, when is the straight through connecter better (or even why does it exist)?

PS: I'm going down the proverbial "rabbit hole" 🐰 with ERCF (waiting on parts) & ERCP (using Ikea 365+ 10l drybox) and enjoying it very much. Thank you (and all that helped) for creating and sharing something amazing!

i've noticed a problem that is possible in the klipper config.

The pin_override can only be onced in a config, the second one will be ignored.

On the Documentation should be a part that if somebody noticed that klipper says error pin pa6.. that you should look into your config that pin override is probably in use and the second will be ignored.

Hello,

I am writing with unusual use case for MMU which is pulltruded filament so I wanted to confirm if my idea is even worth considering.

I am in a middle of perfecting my machine and trying to automate some of the processes. One of them is continuing print when one roll finishes.

Biggest issue printing with PET filament is that usually individual rolls are just around 20g, my current solution is to have filament runout sensor next to print head:

https://cdn.discordapp.com/attachments/167661427862142976/992228984425304165/1656636212134.jpg

Obviously this is kinda tedious process to manually change filaments so I had the idea to employ MMU unit to automate that process for me.

However PET filament is not easy to operate, not only its very stiff but also hollow inside, that introduces several challenges when trying to print it, one of them is to have strong gears that are able to even pull it, I had to change my print head in order to achieve this (currently biqu h2 v2). Second issue is that tip is usually very very sharp and has some troubles coming thru holes that are not chamfered/smooth.

So my question is, will this project be suited for this use case or should i just forget it?

This is how machine currently looks like (prototype):
https://cdn.discordapp.com/attachments/167661427862142976/990493613622427738/1656222475328.jpg

This is how it prints (manual change):
https://cdn.discordapp.com/attachments/167661427862142976/992282494143561818/VID_20220701_061547.mp4

Unfortunately filament welding is even more troublesome than manually changing it:
https://cdn.discordapp.com/attachments/167661427862142976/990882047713239040/1656315085257.jpg

My initial videos about building machine (there are parts with my machine).
https://www.youtube.com/watch?v=Pu34ndoL9wI
https://www.youtube.com/watch?v=5Hv6GIz_-6I

For flashing the Easy BRD SEEEDUINO, a better method of finding out the exact device would be to use
ls -l /dev/serial/by-id/

Which should output devices as well as what the device is linked to, e.g. ../../ttyACM0.

This can help identify the seeeduino and also verify it has been flashed successfully.

I think #113 is missing so parts to be fully effective. MOVES=... is not applied to all ERCF_LOAD/UNLOAD calls

What about overloading the ERCF_LOAD and ERCF_UNLOAD macro instead ?

Like so:

[gcode_macro ERCF_LOAD]
rename_existing: _ERCF_LOAD_ORIG
gcode:
  _ERCF_LOAD_ORIG {rawparams} MOVES={printer["gcode_macro _ERCF_VAR"].num_moves}

Same for ERCF_UNLOAD ?

Should I open a PR?

Hi,

I have found that BOM contains incorrect quantity for some fasteners.
It should be 28 instead of 26 for the M3 threaded inserts and 22 instead of 20 for the M3x8 SHCS.

When the gear motor is on hold when the selector motor is turned on, the kliper goes into error.

Already changed the driver, still the same error, with the _ERCF_TEST_MOVE_GEAR command, the motor spins normally, what could be the reason? Kliper log attached
klippy.log
Send: DUMP_TMC STEPPER=gear_stepper
Recv: // ========== Write-only registers ==========
Recv: // SLAVECONF: 00000200 senddelay=2
Recv: // IHOLD_IRUN: 00081102 ihold=2 irun=17 iholddelay=8
Recv: // TPOWERDOWN: 00000014 tpowerdown=20
Recv: // SGTHRS: 00000000
Recv: // ========== Queried registers ==========
Recv: // GCONF: 000001c4 en_spreadcycle=1 pdn_disable=1 mstep_reg_select=1 multistep_filt=1
Recv: // GSTAT: 00000001 reset=1(Reset)
Recv: // IFCNT: 0000000f ifcnt=15
Recv: // OTP_READ: 0000000e otp_fclktrim=14
Recv: // IOIN: 21000041 enn=1 pdn_uart=1 version=0x21
Recv: // FACTORY_CONF: 0000000e fclktrim=14
Recv: // TSTEP: 000fffff tstep=1048575
Recv: // MSCNT: 00000028 mscnt=40
Recv: // MSCURACT: 00ef003c cur_a=60 cur_b=239
Recv: // CHOPCONF: 34030053 toff=3 hstrt=5 tbl=2 vsense=1 mres=4(16usteps) intpol=1 dedge=1
Recv: // DRV_STATUS: 80020000 cs_actual=2 stst=1
Recv: // PWMCONF: c80d0e24 pwm_ofs=36 pwm_grad=14 pwm_freq=1 pwm_autoscale=1 pwm_autograd=1 pwm_reg=8 pwm_lim=12
Recv: // PWM_SCALE: 00000003 pwm_scale_sum=3
Recv: // PWM_AUTO: 000e0024 pwm_ofs_auto=36 pwm_grad_auto=14
Recv: // SG_RESULT: 00000000

hallo würde gerne den voron stealthburner nutzen aber leider habt ihr dafür keinen sensor halter für den galileo 2 extruder
ist da was in planung ????

m.f.g

see discussion here https://discord.com/channels/460117602945990666/909743915475816458/957093117444632618

i was able to get past this issue by increasing the G4 timing defined here https://discord.com/channels/460117602945990666/909743915475816458/957093117444632618

Hi, the encoder cart is great! The adjustable height with the screw made it so much easier to calibrate and improve the accuracy of the encoder. Would it be possible to share the CAD files for the updated design? Thanks!

Heyho,
Id like to use the design in my bowden printer.
Do you think it will be possible to use the ercf as the bowden extruder or will i have to reinforce the gear/servo assembly to have more pressure?

When i select the T1 slot th machine will show MCU 'mcu' shutdown: Timer too close
Please find the attached file for you action

klippy (1).log

I noticed that there is an "UPDATE_DELAYED_GCODE ID=nevermore_stop_delayed DURATION=900" in ERCF_Manual.pdf. Could anybody help me to find the full example? I can't find the delayed_gcode macro -> "nevermore_stop_delayed" .

Hello, I wanted to ask if it was for the EnragedRabbitProject
there will be a filament sensor for the SB with cw1 or cw2 and dragonhotend ???

M.F.G

Rabbit printing is okay, but the filament shape is wrong after the withdrawal, which causes the subsequent ejection failure. Is there any good solution?

I've encountered a MCU 'ercf' shutdown: Timer too close while using SuperSlicer2.4, after some investigation this error seem to be repeatable by setting speed factor with M220 S200 (or anything above S120) follow by T0 or ERCF_EJECT command.

Also with ERCF_EJECT there was a message "Too much slippage detected during the unload, requested = 1136.6, measured = 0.7 - calling _ERCF_PAUSE..." right before MCU shutdown. (never has loading failure with speed factor at 100%)

I'm using mainsail v2.2.0, klipper v0.10.0-494-gd3c4ba48 on Voron v2.4R2 350 with FYSETC Easy-BRD (based on RP2040) and BTT Octopus 1.1 with Raspberry Pi Zero 2w running mainsail v2.2.0, klipper v0.10.0-494-gd3c4ba48 on Voron v2.4R2 connect through a USB hub, Not sure if it probably a hardware specific problem anyway.

Procedure are:

• Heat extruder
• Set speed factor to 200 (or anything > 120)
• Change tool (T0/T1/T2)

My proposed temporary solution would be something like:

[gcode_macro _ERCF_CHANGE_TOOL]
description: Perform a tool swap
gcode:
    {% set speed_factor = printer.gcode_move.speed_factor %} ;Save previous speed factor
    M220 S100 ;Clear Speed factor
    ...........
    
    M220 S{speed_factor * 100.0} ;Restore Speed factor

Thank you.
klippy.log

Greetings,

I have been getting an excessive amount of 'Timer too close - Shutting Down' issues when I am doing toolhead swaps during a print and when I am just manually cycling the tools for testing.

This is one of the latest logs after a crash.

klippy (11).log
.

https://github.com/FLYmaker/ERCF-FLY-BOARD
The design has just been completed and has not yet been tested

What am I doing wrong? All according to the instructions!!! An error pops up "pin P1.0 used multiple times in config"

Sorry to contact you here, I read parts are expected to be printed in abs, is there any possibility to see in the future a petg printable version?
I tryed to print something in petg but 0.1mm (filament top cap) is a problem (maybe my printer but in petg i'm used with 0.2 tolerances)

Please redirect me to a better place to be updated about this project.
Thanks

Greetings!

Been using the ERCF / ERCP for I think like 9 months or so and the StealthBurner / ClockWorkd2 on my Voron 2.4 since it was released to the Public with my own MODs to make the CW2 ERCF compatible.

Two exhaustive printing weeks must have worn down my Beta 0/1 CW2 Toolhead Parts down to the point where - I assume - The Guidler and/or Latch may have gotten bent out of shape just enough for the Gears to not be digging in enough anymore to overcome the always present friction in the ERCP > ERCF > CW2 Filament Path thus resulting in frequent Filament Grindings and failed Prints - With the necessity of printing new parts I decided to give the recent CW2 Beta 7-11 Parts a try which turned out to be even worse but while I was it I went ahead and traced the cause of the friction back to the off tangential Filament Exit Port of the ERCP:

Basically... Whenever the Filament was stuck and ground to an Hourglass shape in the Toolhead I checked where it may have been stuck by pushing it back but couldn't feel any resistance but pulling it beyond the point where it became stuck was almost impossible.
Taking the Buffer Zone out of the equation would mostly solve this so the issue must be there ( my wheels are spinning freely and the Spools too have been placed on bearings.
For the time being I've resorted to not be winding the Filament onto the wheel and instead just use two PTFE Tubes with one connected to the ERCP PTFE Entry Block and the other to the ERCF Filament Block causing them to split apart if the Filament is being retracted and butt together when the FIlamen is being Extruded.

I'll probably do a DIY MOD of the ERCP to see if this can be solved by printing a Buffer Cross with the Entrance / Exit ports pointing perpendicular towards the Wheels Inner Diameter and thus not introducing that kink in the Screenshot.

I've also noticed certain Filament having a tendency of liking to get pushed out between the rear and bottom Cross sections thus spilling outside instead of coiling up inside - Maybe a wall connecting/closing those two could help with this? 🤔

The engine side bearing has a diameter of 16 mm compared to 14 mm for the previous version.

The ptfe tube of the hotend cant enter the ercf ab cw1 extruder. Therefor Its pressed against the hole that sometimes lead to failed loads. The filament is sometimes pushed against the ptfe tube instead of inside the ptfe tube. Any fixes for this?

Hi,
its possible for CW2 Dragon ?
Thanks

While running through the documentation with initial setup I am having issues with the selector not homing. I ran the ERCF_CALIB_SELECTOR TOOL=0 in the docs it states the selector will home. However the homing move will no happen. If I buzz the stepper motor the stepper moves. If I use the macro to home the selector. The servo buzzes then I only get a small movement of a few mms. of the stepper motor. Then nothing else. I have gone through and checked the hardware configuration. The gear stepper works just fine. In my setup I am using Stepper online NEMA 17 for both steppers.
When I issue the ERCF_CALIB_SELECTOR TOOL=0
I just get action on the servo and zero movement of the stepper. I have included my hardware config and the klipper log

Enraged Rabbit : Carrot Feeder config file for ERCF EASY BRD v1.1

This config sample assume you set the two J6 jumpers on 1-2 and 4-5, i.e. [..].[..]

[mcu ercf]
serial: /dev/serial/by-id/usb-Klipper_samd21g18a_351491C24134555020312E30302C11FF-if00

Carrot Feeder 5mm D-cut shaft

[manual_stepper gear_stepper]
step_pin: ercf:PA4
dir_pin: ercf:PA10
enable_pin: !ercf:PA2
rotation_distance: 22.6789511
gear_ratio: 80:20
velocity: 35
accel: 150
endstop_pin: PC2
microsteps:16
full_steps_per_rotation: 200

[tmc2209 manual_stepper gear_stepper]

Adapt accordingly to your setup and desires

The default values are tested with the BOM NEMA14 motor

uart_pin: ercf:PA8
uart_address: 0
interpolate: True
run_current: 1.0
hold_current: 0.5
sense_resistor: 0.110
stealthchop_threshold: 500

[manual_stepper selector_stepper]
step_pin: ercf:PA9
dir_pin: !ercf:PB8
enable_pin: !ercf:PA11
rotation_distance: 40 #0.0125
velocity: 200
accel: 600
endstop_pin: ^!ercf:PB9
microsteps: 16
full_steps_per_rotation:200

[tmc2209 manual_stepper selector_stepper]
uart_pin: ercf:PA8
uart_address: 1
run_current: 0.8
hold_current: 0.3
interpolate: True
sense_resistor: 0.110
stealthchop_threshold: 5000

Values are for the SAVOX servo

[servo ercf_servo]
pin: ercf:PA5
maximum_servo_angle: 180
minimum_pulse_width: 0.00075
maximum_pulse_width: 0.00225

[duplicate_pin_override]
pins: ercf:PA6

Put there the pin used by the encoder and the filament_motion_sensor

It has to be the same pin for those 3

[filament_motion_sensor encoder_sensor]
switch_pin: ^ercf:PA6
pause_on_runout: False
detection_length: 3.0
extruder: extruder

runout_gcode: ERCF_ENCODER_MOTION_ISSUE

[filament_switch_sensor toolhead_sensor]
pause_on_runout: False
#filament sensor wired to the printer MCU
switch_pin: ^ercf:PA7

klippy (2).log

When include ercf's config have error as the tittle,
Attached the Klippy log for reference
Machine: Voron 2.4 350, MCU 1 BTT OCTOPUS V1.1, MCU 2 BTT Mini SKR E3 V2.0
klippy (2).log

I cant seem to figure out how sensor will be mounted

This project has many similarities to this project:
https://www.thingiverse.com/thing:3431438
Is this coincidence or is EnragedRabbit based on smuff?

I have been using the ERFC for a few weeks now, and have gotten most of the things worked out. I have an issue with the servo (MG90S) not engaging sometimes. It is wired directly into my Octopus v1.1 board 5V pin. It happens during feeding and unloading. I have tried all servo angles and top hat lockers, and have tried multiple cables with different lengths. Sometimes it just doesnt make the full swing for contact. The servo arm doesnt pass the bump. It will also do it randomly when homing ERCF or testing the grip. The only thing I havent changed was the servo.

Any ideas?

After Updating to the newest version of klipper I am presented with this error.

Internal error on command:"ERCF_HOME"
Internal Error on WebRequest: gcode/script
Traceback (most recent call last):
File "/home/pi/klipper/klippy/webhooks.py", line 245, in _process_request
func(web_request)
File "/home/pi/klipper/klippy/webhooks.py", line 415, in _handle_script
self.gcode.run_script(web_request.get_str('script'))
File "/home/pi/klipper/klippy/gcode.py", line 216, in run_script
self._process_commands(script.split('\n'), need_ack=False)
File "/home/pi/klipper/klippy/gcode.py", line 198, in _process_commands
handler(gcmd)
File "/home/pi/klipper/klippy/gcode.py", line 135, in
func = lambda params: origfunc(self._get_extended_params(params))
File "/home/pi/klipper/klippy/extras/gcode_macro.py", line 186, in cmd
self.template.run_gcode_from_command(kwparams)
File "/home/pi/klipper/klippy/extras/gcode_macro.py", line 68, in run_gcode_from_command
self.gcode.run_script_from_command(self.render(context))
File "/home/pi/klipper/klippy/gcode.py", line 213, in run_script_from_command
self._process_commands(script.split('\n'), need_ack=False)
File "/home/pi/klipper/klippy/gcode.py", line 198, in _process_commands
handler(gcmd)
File "/home/pi/klipper/klippy/gcode.py", line 135, in
func = lambda params: origfunc(self._get_extended_params(params))
File "/home/pi/klipper/klippy/extras/gcode_macro.py", line 186, in cmd
self.template.run_gcode_from_command(kwparams)
File "/home/pi/klipper/klippy/extras/gcode_macro.py", line 68, in run_gcode_from_command
self.gcode.run_script_from_command(self.render(context))
File "/home/pi/klipper/klippy/gcode.py", line 213, in run_script_from_command
self._process_commands(script.split('\n'), need_ack=False)
File "/home/pi/klipper/klippy/gcode.py", line 198, in _process_commands
handler(gcmd)
File "/home/pi/klipper/klippy/gcode.py", line 135, in
func = lambda params: origfunc(self._get_extended_params(params))
File "/home/pi/klipper/klippy/extras/ercf.py", line 394, in cmd_ERCF_SET_STEPS
self.gear_stepper.rail.steppers[0].set_step_dist(new_step_dist)
AttributeError: MCU_stepper instance has no attribute 'set_step_dist'
Dumping stepper 'manual_stepper selector_stepper' (ercf) 2 queue_step:
queue_step 0: t=984515532 p=393 i=59994 c=-1187 a=0
queue_step 1: t=1007956721 p=3 i=0 c=0 a=0

I caused this by forgetting to perform the required ERCF_SELECT_TOOL TOOL=0 resulting in nothing being measured. This lead to a fault causing the printer to shutdown.

I understand that this was my fault for not following the manual but this happened to me a couple of times while debugging my encoder resolution.

Internal error on command:"ERCF_CALIBRATE_ENCODER"
Traceback (most recent call last):
  File "/home/pi/klipper/klippy/gcode.py", line 182, in _process_commands
    handler(gcmd)
  File "/home/pi/klipper/klippy/gcode.py", line 120, in <lambda>
    func = lambda params: origfunc(self._get_extended_params(params))
  File "/home/pi/klipper/klippy/extras/ercf.py", line 194, in cmd_ERCF_CALIBRATE_ENCODER
    resolution = dist / half_mean
ZeroDivisionError: float division by zero
Transition to shutdown state: Internal error on command:"ERCF_CALIBRATE_ENCODER"

Steps to reproduce

ECRF_HOME
ERCF_CALIBRATE_ENCODER

The mounting holes for the feet on the ERCF are offset so far to the edge when screwing them down on the rails they dip intowards the rails, this throws off the alignment causing things to be very bowed, it seems the way they feet are designed the holes are just way to far towards the edge, the feet need to be leangthed by a few millimeters so the holes will sit in the middle directly about the 2020 rail then when you screw them it they can lay flat on either side of the rail instead of dipping in like they do

Hey! Could we disable the gear stepper after a toolchange? That would safe some power and give more thermal headroom for the small nema14 steppers.

I am running ercf on a custom Delta printer. When a clog is detected, or there is no filament in the cart, I will get a "Move out of range" error when the printer goes into the pause state. I have tried reducing my delta radius by half, to see if there was an issue with the probe offset, but I still get the same error.

Any ideas what the issue might be?

Error from the Octoprint terminal when sending "pause" right after homing / moving down

Recv: // Klipper state: Ready
[...]
Send: G28 // homes all axis
Recv: ok
Send: G91 // set absolute move
Recv: ok
Send: G0 Z-50 F1000 // move down 50mm
Recv: ok
Send: G90 // set relative move
Recv: ok
Send: G91
Recv: ok
Send: G0 Z-100 F1000
Recv: ok
Send: G90
Recv: ok
[...]
Send: pause
Recv: // action:paused
Printer signalled that it paused, switching state...
Recv: !! Move out of range: -145.000 145.000 245.085 [-1.000]
Recv: !! Move out of range: -145.000 145.000 245.085 [-1.000]
Recv: ok

printer.cfg

# This file contains common pin mappings for the BigTreeTech Octopus.
# To use this config, the firmware should be compiled for the
# STM32F446 with a "32KiB bootloader" and a "12MHz crystal" clock reference.

# See docs/Config_Reference.md for a description of parameters.

[include ./ercf_hardware.cfg] # ERCF settings
[include ./ercf_software.cfg] # ERCF settings

# Driver0
[stepper_a] # StepperOnline 17HS19-2004S1, 1.8 degree, 2A
step_pin: PF13
dir_pin: !PF12
enable_pin: !PF14
microsteps: 16
rotation_distance: 40
endstop_pin: PG6
#position_endstop: 385
homing_speed: 80
homing_retract_dist: 5.0
second_homing_speed: 3
#arm_length: 400

# Driver1
[stepper_b] # StepperOnline 17HS19-2004S1, 1.8 degree, 2A
step_pin: PG0
dir_pin: !PG1
enable_pin: !PF15
microsteps: 16
rotation_distance: 40
endstop_pin: PG9

# Driver2
[stepper_c] # StepperOnline 17HS19-2004S1, 1.8 degree, 2A
step_pin: PF11
dir_pin: !PG3
enable_pin: !PG5
microsteps: 16
rotation_distance: 40
endstop_pin: PG10


# Driver3
# The Octopus only has 4 heater outputs which leaves an extra stepper
# This can be used for a second Z stepper, dual_carriage, extruder co-stepper,
# or other accesory such as an MMU
#[stepper_]
#step_pin: PG4
#dir_pin: PC1
#enable_pin: PA0
#endstop_pin: PG11
#...

# Driver4
[extruder] # Bondtech LGX, 1A, 400 steps/mm
step_pin: PF9
dir_pin: !PF10
enable_pin: !PG2
microsteps: 16
rotation_distance: 7.84 # Bondtech LGX 400 steps/mm
nozzle_diameter: 0.400
filament_diameter: 1.750
heater_pin: PA2 # HE0
sensor_pin:  PF4 # T0
sensor_type: EPCOS 100K B57560G104F
#control: pid
#pid_Kp: 22.2
#pid_Ki: 1.08
#pid_Kd: 114
min_temp: 0
max_temp: 250
min_extrude_temp: 0 # enables cold extrudes for calibration
max_extrude_only_distance: 200 # ERCF settings
max_extrude_cross_section: 50.0 # ERCF settings
pressure_advance = 0.190 # lower the value for more rounded corners 0.192 default

[probe]
pin: PG12 # ! to invert pressure probe
x_offset: -15.0 # pinda=-15.0
y_offset: 14.0 # pinda =14.0
#z_offset: 0.0
speed: 2.0
samples: 3
sample_retract_dist: 3.0

#[filament_switch_sensor material_0]
#switch_pin: PG12

# Driver5
#[extruder1]
#step_pin: PC13
#dir_pin: PF0
#enable_pin: !PF1
#heater_pin: PA3 # HE1
#sensor_pin: PF5 # T1
#...

#[filament_switch_sensor material_1]
#switch_pin: PG13

# Driver6
#[extruder2]
#step_pin: PE2
#dir_pin: PE3
#enable_pin: !PD4
#heater_pin: PB10 # HE2
#sensor_pin: PF6 # T2
#...

#[filament_switch_sensor material_2]
#switch_pin: PG14

# Driver7
#[extruder3]
#step_pin: PE6
#dir_pin: PA14
#enable_pin: !PE0
#heater_pin: PB11 # HE3
#sensor_pin: PF7 # T3
#...

#[filament_switch_sensor material_3]
#switch_pin: PG15

[heater_bed]
heater_pin: PA1
sensor_pin: PF3 # TB
sensor_type: ATC Semitec 104GT-2
#control: pid
#pid_Kp: 22.2
#pid_Ki: 1.08
#pid_Kd: 114
min_temp: 0
max_temp: 130

[fan]
pin: PA8

[heater_fan fan1]
pin: PE5
heater: extruder
heater_temp: 40.0

#[heater_fan fan2]
#pin: PD12

#[heater_fan fan3]
#pin: PD13

#[heater_fan fan4]
#pin: PD14

#[controller_fan fan5]
#pin: PD15

[display]
lcd_type: uc1701
cs_pin: EXP1_3
a0_pin: EXP1_4
rst_pin: EXP1_5
contrast: 63
encoder_pins: ^EXP2_5, ^EXP2_3
click_pin: ^!EXP1_2
## Some micro-controller boards may require an spi bus to be specified:
#spi_bus: spi
## Alternatively, some micro-controller boards may work with software spi:
spi_software_miso_pin: EXP2_1
spi_software_mosi_pin: EXP2_6
spi_software_sclk_pin: EXP2_2

[output_pin beeper]
pin: EXP1_1

[neopixel fysetc_mini12864]
pin: EXP1_6
chain_count: 3
color_order: RGB
initial_RED: 0.4
initial_GREEN: 0.4
initial_BLUE: 0.4

[mcu] # Rasp Pi USB
serial: /dev/serial/by-id/usb-Klipper_stm32f446xx_350034000750534E4E313120-if00
# CAN bus is also available on this board

[mcu rpi] # Rasp Pi local mcu for ADXL345 Accel.
serial: /tmp/klipper_host_mcu

[adxl345] # Acelerometer
cs_pin: rpi:None

[resonance_tester]
accel_chip: adxl345
probe_points:
    0, 0, 340  # toolhead x y z location during test
    
[input_shaper]
#shaper_freq_x: 59.4
#shaper_type_x: mzv
#shaper_freq_y: 59.0
#shaper_type_y: mzv

[printer]
kinematics: delta
max_velocity: 300 # default 300
max_accel: 3000 # default 3000
max_z_velocity: 200 # default 150
square_corner_velocity: 3.0 # default 5
#delta_radius: 201.027
print_radius: 150
minimum_z_position: -10.0 # used for initial calibration

[delta_calibrate]
speed: 200
radius: 140
horizontal_move_z: 2

[bed_mesh]
speed: 200
horizontal_move_z: 2
mesh_radius: 130
mesh_origin: 0, 0
round_probe_count: 9
mesh_pps: 4
algorithm: bicubic
bicubic_tension: 0.2
move_check_distance: 5
split_delta_z: .025
#fade_start: 0
#fade_end: 10
#fade_target: 0

[endstop_phase]

[pause_resume] # ERCF settings
recover_velocity: 300.0

########################################
# TMC2209 configuration
########################################

[tmc2209 stepper_a]
uart_pin: PC4
##diag_pin: PG6
run_current: 1.4
hold_current: 0.800
stealthchop_threshold: 0

[tmc2209 stepper_b]
uart_pin: PD11
##diag_pin: PG9
run_current: 1.4
hold_current: 0.800
stealthchop_threshold: 0

[tmc2209 stepper_c]
uart_pin: PC6
##diag_pin: PG10
run_current: 1.4
hold_current: 0.800
stealthchop_threshold: 0

#[tmc2209 stepper_]
#uart_pin: PC7
##diag_pin: PG11
#run_current: 0.650
#stealthchop_threshold: 999999

[tmc2209 extruder]
uart_pin: PF2
run_current: 0.60 # 0.5-0.7 recommended for Bondtech LGX
hold_current: 0.300
stealthchop_threshold: 0

#[tmc2209 extruder1]
#uart_pin: PE4
#run_current: 0.800
#stealthchop_threshold: 999999

#[tmc2209 extruder2]
#uart_pin: PE1
#run_current: 0.800
#stealthchop_threshold: 999999

#[tmc2209 extruder3]
#uart_pin: PD3
#run_current: 0.800
#stealthchop_threshold: 999999

[board_pins]
aliases:
    # EXP1 header
    EXP1_1=PE8, EXP1_2=PE7,
    EXP1_3=PE9, EXP1_4=PE10,
    EXP1_5=PE12, EXP1_6=PE13,    # Slot in the socket on this side
    EXP1_7=PE14, EXP1_8=PE15,
    EXP1_9=<GND>, EXP1_10=<5V>,

    # EXP2 header
    EXP2_1=PA6, EXP2_2=PA5,
    EXP2_3=PB1, EXP2_4=PA4,
    EXP2_5=PB2, EXP2_6=PA7,      # Slot in the socket on this side
    EXP2_7=PC15, EXP2_8=<RST>,
    EXP2_9=<GND>, EXP2_10=PC5

# See the sample-lcd.cfg file for definitions of common LCD displays.

# A [probe] section can be defined instead with a pin: setting identical
# to the sensor_pin: for a bltouch
#[bltouch]
#sensor_pin: PB7
#control_pin: PB6
#z_offset: 0

#[neopixel my_neopixel]
#pin: PB0

## Custom Menus
[menu __main __test]
type: list
name: Tester

# ERCF Client Macros
[gcode_macro PRINT_START]
gcode:
    {% set EXTRUDER_TEMP = params.EXTRUDER_TEMP|default(190)|float %}
    {% set BED_TEMP = params.BED_TEMP|default(60)|float %}
    SET_FILAMENT_SENSOR SENSOR=encoder_sensor ENABLE=0 # added line for clog detection mode. Turns off sensor
    M104 S{EXTRUDER_TEMP * 0.80}        # set extruder temperature to 75%
    M140 S{BED_TEMP}                    # set bed temprature
    BED_MESH_PROFILE LOAD=default #loads Klipper default mesh
    G21 # Set Units to Millimeters
    G90 # Set to Absolute Positioning
    M83 # Set extruder to relative mode
    M220 S100 # Set Feedrate percent back to 100
    M106 S0 #Fan Off
    M117 Homing
    G28 # Home All
    G92 E0 # Reset Extruder
    G1 Z15.0 F3000
    M109 S{EXTRUDER_TEMP}   # Wait for nozzle to finish heating
    M106 S0                 # Done waiting, part cooling off and back to slicer control
    #M117 Probing
    #PROBE
    SET_FILAMENT_SENSOR SENSOR=encoder_sensor ENABLE=1 # added line for clog detection mode. Turns on sensor
    M117 Printing

[gcode_macro PRINT_END]
gcode:
    M140 S0 # Turn-off bed
    M106 S0 # Fan Off
    G91 # Relative positioning
    G1 E-0.5 F2500 # Retract filament
    G1 Z30 F3000 # Move effector up
    M220 S100 # Set Feedrate percent back to 100
    G90 # Absolute positioning
    G1 X0 Y30 F3000 # Move effector center / back
    {% set unload = params.UNLOAD_AT_END|default(0)|int %}
    M400    # wait for buffer to clear
    {% if unload|int == 1%}
        ERCF_EJECT
    {% endif %}
    M104 S0 # Turn-off hotend
    SET_STEPPER_ENABLE STEPPER=extruder ENABLE=0 # Disable extruder

[gcode_macro CANCEL_PRINT]
rename_existing: BASE_CANCEL_PRINT
gcode:
  TURN_OFF_HEATERS
  CLEAR_PAUSE
  SDCARD_RESET_FILE
  {% set x_park = printer.toolhead.axis_minimum.x|float + 5.0 %}
  {% set y_park = printer.toolhead.axis_maximum.y|float - 5.0 %}
  {% set max_z = printer.toolhead.axis_maximum.z|float %}
  {% set act_z = printer.toolhead.position.z|float %}
  {% if act_z < (max_z - 20.0) %}
      {% set z_safe = 20.0 %}
  {% else %}
      {% set z_safe = max_z - act_z %}
  {% endif %}
  SET_FILAMENT_SENSOR SENSOR=encoder_sensor ENABLE=0
  G91
  G1 Z{z_safe} F900
  G90
  G0 X{x_park} Y{y_park} F6000
  BASE_CANCEL_PRINT

[gcode_macro PAUSE]
rename_existing: BASE_PAUSE
gcode:
  {% set x_park = printer.toolhead.axis_minimum.x|float + 5.0 %}
  {% set y_park = printer.toolhead.axis_maximum.y|float - 5.0 %}
  {% set max_z = printer.toolhead.axis_maximum.z|float %}
  {% set act_z = printer.toolhead.position.z|float %}
  {% if act_z < (max_z - 5.0) %}
      {% set z_safe = 5.0 %}
  {% else %}
      {% set z_safe = max_z - act_z %}
  {% endif %}
  G92 E0
  G1 E-1.0 F1500.0
  G90
  SAVE_GCODE_STATE NAME=PAUSE_state
  BASE_PAUSE
  G91
  G1 Z{z_safe} F900
  G90
  G0 X{x_park} Y{y_park} F6000

[gcode_macro RESUME]
rename_existing: BASE_RESUME
gcode:
    {% if printer["gcode_macro ERCF_PAUSE"].is_paused|int != 0 %}
        M118 You can't resume the print without unlocking the ERCF first.
        M118 Run ERCF_UNLOCK and solve any issue before hitting Resume again
    {% else %}
        RESTORE_GCODE_STATE NAME=PAUSE_state
        G90
        {% if printer["gcode_macro ERCF_VAR"].clog_detection|int == 1 %}
            SET_FILAMENT_SENSOR SENSOR=encoder_sensor ENABLE=1
        {% endif %}
        BASE_RESUME
    {% endif %}

#*# <---------------------- SAVE_CONFIG ---------------------->
#*# DO NOT EDIT THIS BLOCK OR BELOW. The contents are auto-generated.
#*#
#*# [probe]
#*# z_offset = 0.453
#*#
#*# [extruder]
#*# control = pid
#*# pid_kp = 14.505
#*# pid_ki = 0.440
#*# pid_kd = 119.662
#*#
#*# [heater_bed]
#*# control = pid
#*# pid_kp = 55.157
#*# pid_ki = 0.636
#*# pid_kd = 1195.521
#*#
#*# [endstop_phase stepper_a]
#*# trigger_phase = 59/64
#*#
#*# [endstop_phase stepper_b]
#*# trigger_phase = 44/64
#*#
#*# [endstop_phase stepper_c]
#*# trigger_phase = 18/64
#*#
#*# [input_shaper]
#*# shaper_type_x = 3hump_ei
#*# shaper_freq_x = 82.0
#*# shaper_type_y = mzv
#*# shaper_freq_y = 60.0
#*#
#*# [printer]
#*# delta_radius = 203.975048
#*#
#*# [stepper_a]
#*# angle = 209.691248
#*# arm_length = 402.423731
#*# position_endstop = 390.915052
#*#
#*# [stepper_b]
#*# angle = 329.578808
#*# arm_length = 405.437482
#*# position_endstop = 388.767988
#*#
#*# [stepper_c]
#*# angle = 90.000000
#*# arm_length = 403.866956
#*# position_endstop = 390.668581
#*#
#*# [bed_mesh default]
#*# version = 1
#*# points =
#*# 	  -0.156093, -0.156093, -0.156093, -0.156093, -0.156093, -0.156093, -0.156093, -0.156093, -0.156093
#*# 	  -0.051219, -0.051219, -0.051219, -0.101586, -0.137468, -0.164767, -0.033983, -0.033983, -0.033983
#*# 	  -0.019383, -0.019383, -0.033281, -0.020074, -0.022258, -0.013818, 0.012413, 0.100851, 0.100851
#*# 	  -0.004334, -0.004334, 0.027696, 0.015139, -0.003518, -0.015928, -0.046685, 0.014538, 0.014538
#*# 	  -0.039046, -0.025214, 0.041022, 0.066368, 0.078945, 0.096209, 0.073397, 0.064159, 0.130159
#*# 	  0.014118, 0.014118, 0.042400, 0.061551, 0.051162, 0.024311, -0.006972, -0.068517, -0.068517
#*# 	  -0.025675, -0.025675, 0.024664, 0.049281, 0.039570, 0.027039, -0.008427, -0.040542, -0.040542
#*# 	  0.003335, 0.003335, 0.003335, 0.023118, -0.002773, -0.052553, -0.106721, -0.106721, -0.106721
#*# 	  0.013421, 0.013421, 0.013421, 0.013421, 0.013421, 0.013421, 0.013421, 0.013421, 0.013421
#*# tension = 0.2
#*# min_x = -130.0
#*# algo = bicubic
#*# y_count = 9
#*# mesh_y_pps = 4
#*# min_y = -130.0
#*# x_count = 9
#*# max_y = 130.0
#*# mesh_x_pps = 4
#*# max_x = 130.0
#*#
#*# [delta_calibrate]
#*# height0 = 0.453
#*# height0_pos = 31228.000,31060.000,31214.667
#*# height1 = 0.453
#*# height1_pos = 36957.000,36802.667,27293.333
#*# height2 = 0.453
#*# height2_pos = 30101.000,40255.000,30118.667
#*# height3 = 0.453
#*# height3_pos = 27519.333,35823.667,36050.667
#*# height4 = 0.453
#*# height4_pos = 30086.000,29881.333,37657.667
#*# height5 = 0.453
#*# height5_pos = 35290.333,27640.667,35230.000
#*# height6 = 0.453
#*# height6_pos = 39050.667,29948.000,30066.000
#*# distance0 = 116.85
#*# distance0_pos1 = 30869.409,31328.693,31443.720
#*# distance0_pos2 = 27427.602,36291.432,36446.159
#*# distance1 = 116.96
#*# distance1_pos1 = 31057.886,30950.542,31635.150
#*# distance1_pos2 = 30128.825,30000.528,40379.958
#*# distance2 = 116.68
#*# distance2_pos1 = 31438.007,30764.840,31443.720
#*# distance2_pos2 = 36465.543,27338.345,36446.159
#*# distance3 = 116.99
#*# distance3_pos1 = 31629.694,30953.530,31064.766
#*# distance3_pos2 = 40414.982,30045.199,30133.731
#*# distance4 = 116.92
#*# distance4_pos1 = 31437.324,31331.721,30877.190
#*# distance4_pos2 = 36452.654,36348.423,27444.518
#*# distance5 = 116.89
#*# distance5_pos1 = 31057.212,31521.233,31064.766
#*# distance5_pos2 = 30118.752,40238.954,30133.731
#*# distance6 = 117.08
#*# distance6_pos1 = 27642.962,35225.118,36049.904
#*# distance6_pos2 = 30390.832,29717.629,39942.649
#*# distance7 = 116.9
#*# distance7_pos1 = 30363.754,29692.952,39096.539
#*# distance7_pos2 = 36565.297,27410.911,35855.203
#*# distance8 = 117.04
#*# distance8_pos1 = 36066.550,27553.877,35373.634
#*# distance8_pos2 = 39974.274,30306.112,29848.646
#*# distance9 = 116.73
#*# distance9_pos1 = 39122.926,30278.013,29822.474
#*# distance9_pos2 = 35859.192,36446.060,27515.873
#*# distance10 = 116.95
#*# distance10_pos1 = 35376.072,35949.256,27659.066
#*# distance10_pos2 = 29833.240,39801.402,30394.945
#*# distance11 = 116.9
#*# distance11_pos1 = 29807.322,38958.887,30368.277
#*# distance11_pos2 = 27499.425,35702.979,36545.839

High friction filament paths (particularly when using ERCP) plague many ERCF setups. Klipper offers a feature which allows additional stepper motors to be slaved to the extruder during printing.

Implementing this method using the gear selector motor to provide additional filament pushing force would mitigate filament drag issues, however it could also introduce issues with filament bunching or being stretched if the stepper calibration between the two motors is not 100% accurate. To overcome this, I suggest adding a periodic 'SERVO UP' command to remove tension and allow the filament path to balance. This could be done iteratively and in theory should not have any affect on the print GCode.

As not all users will need or benefit from this type of setup (or be able to achieve the close calibration tolerances necessary), I suggest using a configurable parameter in ecrf_software.cfg to enable or disable this behavior. In addition, a configuration field allowing user-specified intervals between servo cycles may be beneficial (alternatively, it may be better to just call a servo cycle for every 'x' mm3 of extruded filament, if such a thing is possible).

Not so much an issue as a question and challenge I guess. I did some investigating online but was not able to find any relevant information on this topic. I have been trying to use the ERCF with flex filament (specifically Ninjatek's Cheeta). Given the appropriate top hat, the filament indeed loads to the extruder, but then prompts an error:

14:19:38
An issue with the ERCF has been detected and the ERCF has been PAUSED
14:19:37
idle_timeout: Timeout set to 72000.00 s
14:19:37
Filament seems blocked between the extruder and the nozzle, calling _ERCF_PAUSE...

even though it seems to be properly loaded (I can extrude, and the toolhead sensor is triggered). When ejecting, the filament frequently is not unloaded enough in the extruder and stays stuck between the extruder gears when the ERCF is trying to unload. Loading ABS and PLA works fine, so I am sure that it is related to the stretch that is inherent in flexible filaments. Anyway, I am curious if others have tried the ERCF with flexible filaments and also if there are steps to take to maybe get it to work. I know that flexible filaments are difficult to work with loading systems like the ERCF (I also have a Prusa MK3S with MMU2S, which just doesn't allow you to use flexible filaments).

Hello, I apologize for my English, because. I use a translator, tell me how you can replace the AH3364Q-P-B Hall Effect sensor (SIP), is there a more common analogue of this hall sensor?

Hi There,

i have been assembling the ERCP. While doing so, i have experienced, that the buffer_wheel does not spin freely as i would like to have it spinning. I spotted a friction between Buffer_Wheel and Buffer_Cross. With a closer look it seems for me that there is a cavity in which the buffer_wheel shoult spin but it is not big enought. As marked on the screenshot.

For my understanding the fix would be to have a cylinder, slightly bigger than the buffer_wheel substracted from the buffer_cross.
I did that and it looks good for me for now but i want to ask if i do not understand my right.
The next picture shows a fix, which would be to have a cylinder, slightly bigger than the buffer_wheel substracted from the buffer_cross.
I did that and it looks good for me.
Pink: old buffer_cross
Grey: new buffer_cross

Do we have the slightly smaller cavity for the buffer_wheel by intention or is my fix doing his job?

Greetings

It has come to my attention that klipper is dropping the default_parameter_* method of passing variables, it seems that ERCF still uses it.

ercf_software.cfg:default_parameter_LENGTH: 0.0
ercf_software.cfg:default_parameter_LENGTH: 200.0
ercf_software.cfg:default_parameter_SPEED: 50.0
ercf_software.cfg:default_parameter_ACCEL: 200.0
ercf_software.cfg:default_parameter_LOOP: 10
ercf_software.cfg:default_parameter_RAND: 0

i can locate the threaded printable screws for the ercf to mount to the frame, but cannot locate the nuts to lock them in place

LGX mount in the filament sensor folder needs the spacer which is buried in the voron mods folder. Either include the spacer here or edit the STL so it wont need the spacer.

This is the image of the user mod with ball and microswitch (left) as compared to the official ERCF LGX mount (right)

Greetings!
Is there any way to add some buffer time to the detection of load into the nozzle? I find it causing a ercf_pause just before the filament detection sometimes.

The build guide https://github.com/EtteGit/EnragedRabbitProject/blob/main/Documentation/Build_Guide/Build_guide.md
references a no longer available https://github.com/EtteGit/EnragedRabbitProject/blob/main/Klipper_Macros/printer.cfg

I have successful run all my calibrations and I am on the step to calibrate the ercf when I run the calibration I have set the bowden length in config 5 cm shorter than length when I run the ERCF_CALIBRATE command when I get to the part where the filament feeds to the filament to the extruder I have klipper shutting down every time.

I reran the encoder calibration and I get exact 200 mm measurements multiple times during encoder calbration step. I'm at a lose as to what I am doing incorrectly. I have also replaced the usb cable because I had found some users where having issues with poor quality usb cables. What should I be looking for?

The Step File for the Carrot Feeder Assembly fails to import/translate to Fusion 360.
Unfortunately the report is rather vague:
Carrot_Feeder_V1.1_errorReport.pdf

Feel free to delete this Issue if it is outside the scope of this project, I just thought I would inform you since Fusion 360 is probably used by quite a few people who will build this project.

I just loaded all the config files for the ercf. But it gives me Section 'ercf' is not a valid config section i am not sure why that is?

I know you've included STEP files for all the CAD models, which is great. It allows easy import into Fusion 360 for viewing the model.

However, the problem with STEP files is that they do not capture the design history, so you end up with an object with no access to the sketches, features and operations that went into creating it. Don't get me wrong, that's better than a poke in the eye, but it does make modding much more difficult than it strictly needs to be. It is so much easier if you can go back and tweak a sketch or edit a feature, or insert new operations in the timeline to modify existing features. All this is lost when exporting as a STEP file.

I don't know that you were working in Fusion 360 of course, but it's an educated guess that you likely were.

So my request is - if possible - and if you are willing - please include the *.f3d Fusion 360 files as well as the step files.

The ERCF is amazing, great work.
If you did not consider it, I may have an idea to speed up change:

• Add a filament cutting mechanism
• Cut the current filament when the calculated material needed is in the length of the bowden (some custom code)
• Push new filament
• The new one will push the old one
• Purge the new one

This way the machine will keep printing while swapping, with a minimum time to optimize to spend on purging

One downside is that if the swap need to happen every n < length of bowden you either will have to purge and waste filament or restrict the minimum amount of swap

Another downside is in flexibles, you will need to push the new one while the extruder pull the old one

Greetings,

I've concluded most of my ERCF build but I'm now struggling with the ERCF_CALIBRATE process on page 116 of the Build Manual.

Maybe some details about the Printer - It is a 350 sized Voron 2.4 with the ERCF attached to its side and with the OD=4mm / ID=3mm PTFE Tube still going through a ( side feed ) Exhaust Port Filter - The total length of that PTFE Tube was measured at 1110mm:

Mounting the ERCF to either the back or top of the Voron to shorten the Tube is not an option because of the limited space in my closet leaving only a Slot Cut at the top as a last resort option. The Afterburner Toolhead uses the Poor man's SmartWatch MOD.

The issue I'm having are best described in the following 3 pictures:

There appears to be an issue with the Unloading stdev being high despite the moves being relatively consistent?
The Gap between the "Wall" of the IR-Sensor and the BMG Idler ( mentioned on page 107 ) is probably less than 1mm after filing down the Sensor supporting plastic.

When subtracting 50mm from the 1100mm measured PFTE Tube the Filament stops like 10cm before reaching the Toolhead, keeps creeping forwards and then times out in Octoprint.

After significantly increasing the PTFE Tubes reported length in ercf_software.cfg to reach the Toolhead Sensor before the Timeout happens it now stops with the Filament remaining in contact with the Sensor without the supposed retraction happening and thus also no other Tools other than T0 being calibrated.

What is causing the problem?