Issue with Tai Chi extruder setup

General Discussion
1

Basic Information:

Printer Model: Ender 3 Pro
MCU / Printerboard:Creality V2.2
Host / SBC:Odroid XU4
klippy.log
klippy.log (2.4 MB)

Fill out above information and in all cases attach your klippy.log file (use zip to compress it, if too big). Pasting your printer.cfg is not needed
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Describe your issue:

I have been setting up a Tai Chi hotend and dual extrusion on an Ender 3 I have laying around. I have followed the X-in/1-out thread and have been unable to get my second extruder to activate or extrude. Anyone have experience or advice? Most of the threads I’ve found have been older or refer to the shared_heater which no longer works.

I did hardware troubleshooting and confirmed the pins for the second extruder do function as expected when I change the [extruder] to use them.

2

printer.cfg (5.1 KB)
DualExtrusion.cfg (1.3 KB)

3

To use the Tai-Chi hotend, youll need to set up your second extruder as an extruder stepper, something like this

[extruder_stepper extruder1]
extruder: 
step_pin: PC13
dir_pin: !PF0
enable_pin: !PF1
microsteps: 16
rotation_distance: 7.71

youll then need to need to configure your T0 and T1 macros to change the extruder thats been used

[gcode_macro T0]
gcode:
	SYNC_EXTRUDER_MOTION EXTRUDER="extruder" MOTION_QUEUE="extruder"
	SYNC_EXTRUDER_MOTION EXTRUDER="extruder1" MOTION_QUEUE=""

[gcode_macro T1]
gcode:
	SYNC_EXTRUDER_MOTION EXTRUDER="extruder" MOTION_QUEUE=""
	SYNC_EXTRUDER_MOTION EXTRUDER="extruder1" MOTION_QUEUE="extruder"

if you want to use PA, then you need to set that in the startup gcode

[delayed_gcode STARTUP_GCODE]
initial_duration: 0.1
gcode:
	set_pressure_advance extruder=extruder advance=0.45 smooth_time=0.04
	set_pressure_advance extruder=extruder1 advance=0.45 smooth_time=0.04
4

Thank you so much for responding!

When I dug a little deeper into my printer.cgf I found a set of Macros that not removed earlier in my troubleshooting which were keeping things from working as expected.

5

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