Reverting to original Prusa extruder from Bondtech BMG
Hi,
My first Prusa i3Mk3S had a Bondtech BMG and Mosquito hotend fitted, for simplicity of support and consistency of my small farm I have returned it to the original Prusa extruder and E3D hotend.
I have flashed the firmware back to the latest released Prusa firmware and performed a factory reset on the printer, however the extruder still seems to be running at the BMG's speed.
I have attempted to run the following code in a gcode file on the SD card to set the e-steps, however the printer said the file was incomplete and sat at 0% done of print job, this also didn't seem to make any difference to the extruder speed, what am I missing here?
M92 E415
M500
Thanks!
Probably easiest to just use a direct serial terminal connection
The printer does some sanity checks on gcode. I believe it at minimum checks for temperature and movement commands.
I use a direct serial terminal connection to the printer and enter those commands manually. I usually use a Raspberry Pi configured with OctoPrint for ease of use, but you can use something like Pronterface to connect.
Your commands look correct.
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Connected with Prontoface...
OK, hooked up Prontoface, esteps already 415, however microsteps (ustep) is 16, I seem to remember reading it should be 32?
SENDING:M503
echo:Steps per unit:
echo: M92 X100.00 Y100.00 Z400.00 E415.00
echo:UStep resolution:echo: M350 X16 Y16 Z16 E16
echo:Maximum feedrates - normal (mm/s):
echo: M203 X200.00 Y200.00 Z12.00 E120.00
echo:Maximum feedrates - stealth (mm/s):
echo: M203 X100.00 Y100.00 Z12.00 E120.00
echo:Maximum acceleration - normal (mm/s2):
echo: M201 X2500 Y2500 Z300 E8000
echo:Maximum acceleration - stealth (mm/s2):
echo: M201 X960 Y960 Z300 E8000
echo:Acceleration: P=print, R=retract, T=travelecho: M204 P1000.00 R1250.00 T1000.00
echo:Advanced variables: S=Min feedrate (mm/s), T=Min travel feedrate (mm/s), B=minimum segment time (ms), X=maximum XY jerk (mm/s), Z=maximum Z jerk (mm/s), E=maximum E jerk (mm/s)
echo: M205 S0.00 T0.00 B0.00 X8.00 Y8.00 Z0.40 E4.50
echo:Home offset (mm):echo: M206 X0.00 Y0.00 Z0.00
echo:PID settings:echo: M301 P19.26 I2.01 D46.09
echo:PID heatbed settings:echo: M304 P126.13 I4.30 D924.76
echo:Retract: S=Length (mm) F:Speed (mm/m) Z: ZLift (mm)
echo: M207 S3.00 F2700.00 Z0.00
echo:Recover: S=Extra length (mm) F:Speed (mm/m)
echo: M208 S0.00 F480.00
echo:Auto-Retract: S=0 to disable, 1 to interpret extrude-only moves as retracts or recoveries
echo: M209 S0
echo:Filament settings: Disabled
RE: Connected with Prontoface...
OK, hooked up Prontoface, esteps already 415, however microsteps (ustep) is 16, I seem to remember reading it should be 32?
SENDING:M503
echo:Steps per unit:
echo: M92 X100.00 Y100.00 Z400.00 E415.00
echo:UStep resolution:
echo: M350 X16 Y16 Z16 E16
echo:Maximum feedrates - normal (mm/s):
echo: M203 X200.00 Y200.00 Z12.00 E120.00
echo:Maximum feedrates - stealth (mm/s):
echo: M203 X100.00 Y100.00 Z12.00 E120.00
echo:Maximum acceleration - normal (mm/s2):
echo: M201 X2500 Y2500 Z300 E8000
echo:Maximum acceleration - stealth (mm/s2):
echo: M201 X960 Y960 Z300 E8000
echo:Acceleration: P=print, R=retract, T=travelecho: M204 P1000.00 R1250.00 T1000.00
echo:Advanced variables: S=Min feedrate (mm/s), T=Min travel feedrate (mm/s), B=minimum segment time (ms), X=maximum XY jerk (mm/s), Z=maximum Z jerk (mm/s), E=maximum E jerk (mm/s)
echo: M205 S0.00 T0.00 B0.00 X8.00 Y8.00 Z0.40 E4.50
echo:Home offset (mm):echo: M206 X0.00 Y0.00 Z0.00
echo:PID settings:echo: M301 P19.26 I2.01 D46.09
echo:PID heatbed settings:echo: M304 P126.13 I4.30 D924.76
echo:Retract: S=Length (mm) F:Speed (mm/m) Z: ZLift (mm)
echo: M207 S3.00 F2700.00 Z0.00
echo:Recover: S=Extra length (mm) F:Speed (mm/m)
echo: M208 S0.00 F480.00
echo:Auto-Retract: S=0 to disable, 1 to interpret extrude-only moves as retracts or recoveries
echo: M209 S0
echo:Filament settings: Disabled
Working now...
esteps should be 280 as per firmware, usteps should be 32 as per firmware.