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Topics - ungutknut

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Pretend Prusa Firmware / D9 MK2 400 factory issues
« on: May 09, 2020, 04:07:48 PM »

here are some issues I faced when installing the waggster FW on my Duplicator D9 MK2 400 (factory):

# different Baudrate
Right after flashing the mainboard I failed to connect with octoprint. Turned out the Baudrate has changed to 250000.

# unable to flash LCD
I was precisely following every step of the guide but still was unable to get the LCD recognizing my SD card. Turned out it was expecting a CONFIG.txt which isn't present in the pre-built waggster FW. I just used the one from here ( ) and finally the LCD FW got uploaded. It seems to work without this file for everyone else... so I don't know exactly what's going on here.

# Y-axis reversed
When I move the bed via LCD control, the bed goes the wrong direction. It's no issue on prints though.

# SD-refresh needs reboot
Waggster already mentioned this one. I'm just confirming it. When having the printer on USB you also have to disconnect the USB cable which makes this a bit annoying.

# Filament runout stops print
By default filament run-out detection seems to be enabled, despite the absence of such on the D9. When printing from SD card this seems to get ignored but when I start from octoprint, the printer displays some generic warning and octoprint disconnects with an error message. Following commands fixed this issue:
M412 S0

# linear advance disabled by default
Seems the one reason for which I updated the FW is not available. M900 gives back "unknown command" and so I guess I'll have to compile it on my own.

So all in all this really is some very useable piece of FW with no major bugs. Thanks waggster for your efforts!

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