Rpi & Prusa mk2s print quality issue


#1

Printing the same gcode file from the SD card and via Octoprint 1.3.10 results in the two things in the image attached.


SD card printing provides a very smooth finish, whereas via Octoprint it is lumpy and uneven.
It is an Rpi 2 model b.

Any help greatly appreciated !


#2

Hi @Nigel_Hodgson!

Depending on the plugins you have installed, the power of the RasPi 2B is hard on the edge.
Also for OctoPrint 1.3.10 the Raspberry Pi 3B upwards is recommended.


(OctoPrint.org - Download & Setup OctoPrint)


#3

Thanks Ewald !

SO do you mean that an older version of octoprint would give better performance ??

Or is this down to serial speed or processor or what ?


#4

I started using OctoPrint with a RasPi 2B and OctoPi 0.14.0 and OctoPrint 1.3.4 but switched soon to a RasPi 3B because booting of the 2B already took quite a while.

Do you have plugins installed and have you tried to print in save mode?

The serial interface and the data transfer and the printer board calculation power are some kind of a bottleneck.
Besides the printing duties, all serial protocol calculation has to be performed too.
For more information on this topic you may have a look on this thread: The ongoing USB Conspiracy Theory?