Notifications
Clear all

Firmwarechanges for longer Hotend to the MK3s  

  RSS
PPRRUUSSAA
(@pprruussaa)
Trusted Member
Firmwarechanges for longer Hotend to the MK3s

when I attach another longer hotend to the Prusa MK3s, had I to change the firmeware, as I read in the internet (2014, 2016,2018 and early 2019) ? Or is it obsolete of P.I.N.D.A. Or can I only send some G-Codes to set the new Z-height?

Does anybody know? - Carsten

Posted : 26/01/2020 12:42 pm
RH_Dreambox
(@rh_dreambox)
Prominent Member
RE: Firmwarechanges for longer Hotend to the MK3s

If you make a change in the height of the nozzle, you need to adjust the PINDA (1 mm higher than the nozzle) and then do a new Z calibration.
If your new hotend end is much longer than the old one, there may be problems with the Z calibration because the printer wants to calibrate the working height to 210 mm.

Bear MK3 with Bondtech extruder...
Posted : 27/01/2020 12:31 pm
PPRRUUSSAA
(@pprruussaa)
Trusted Member
Topic starter answered:
RE: Firmwarechanges for longer Hotend to the MK3s

OK, I will try, we will see ... - Carsten

 

Posted : 27/01/2020 4:45 pm
karl-herbert
(@karl-herbert)
Illustrious Member
RE: Firmwarechanges for longer Hotend to the MK3s

@umaker

If necessary you should change Z_MAX_POS (MK3S it's 210) in the firmware, compile and flash again (Reduce this value by the height difference from the original construction) otherwise you will get a calibration error:

file: configuration_prusa.h (renamed file from variants order)

#define Z_MAX_POS 210

For example: If you install a Bondtech Extruder you must change this value to 205, because the Bondtech is about 5mm different to the original Prusa Extruder.

Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen....
Posted : 27/01/2020 9:25 pm
PPRRUUSSAA
(@pprruussaa)
Trusted Member
Topic starter answered:
RE: Firmwarechanges for longer Hotend to the MK3s

Everything is working fine :o) thx for help -> Carsten

It will be nice, If prusa will make it changeable with gcode-commands.

Posted : 28/01/2020 12:04 am
Share: