Pre-heating extruder...
Hi,
For my application I'm using a costum extruder without a thermistor. When I start my print it stops at "Pre-heating extruder..." followed by the error "Heater extruder not heating at expected rate". How can I override this error?
In my printer.cfg I already wrote:
[extruder]
min_temp: -120
min_extrude_temp: -120
When I print the G-Code it sets my target temp for extruder on 150°C.
Thanks!
9 Replies
You can disable the preheating using macro variables: https://os.ratrig.com/docs/configuration/macros#heating
Configuring RatOS Macros | RatOS
RatOS comes with a bunch of flexible predefined macro's that can be customized via variables and macro hooks.
Can't you tell the slicer to not set a temp for the hotend?
This worked very well thanks! Now the problem is "tmc uart 'extruder' register IFCNT", because ofcourse there is no default extruder. Can I overrule this as well?
It is solved but I will try it as well
Is it even possible to do a dummy print without attaching a steppermotor on the place of the extruder?
This is uhm.. Gonna be interesting..
I'm not sure actually.
Is there anybody who can help us with this problem? We tried to figure this out but couldn't sort it...
you probably need to post process the slicer code to remove the things you don't need (like extruder commands)
either that or have the extruder control the syringe pump
i think the easiest way to go (and the dumbest) is to just put a driver in the extruder slot
It's one of those things you can look at later, don't let it block your process.
It may complain if there isn't a stepper attached
Hi, sorry for the late reply. This weekend we found our problem and apparently the extruder TMC2209 was defect. We orderd a new one end everything is working perfect now. Thanks!
Excellent 👍