Did anyone managed to get a PrusaPrinter connected to octoprint with the Zero using UART

#1

Managed to install armbian focal beta 4 and octoprint,

Adapted this schema: https://cdn.help.prusa3d.com/wp-content/uploads/3pinout-398x600.jpg

from here: https://help.prusa3d.com/en/article/prusaprint-rpi-zero-and-octoprint_2180

But octoprint will not find the Prusa.

Do I have to activate UART somehow?

#2

Try this image https://github.com/ludiazv/octocitrico
and maybe try follow these instructions

#3

Hi, I just make the post, please have a look.

#4

Thank you! At the moment Im still struggling to install the os on emmc, Booting from sd card works fine but I cant get it to work with emmc

#5

From my testing, I used a SanDisk Ultra C10 card, when writing the image from my mac, it shows the speed is around 15 MB/s. However, I boot the operating system from it and run the speed test (using if=/dev/zero of=/tmp/test1.img bs=100M count=1 oflag=dsync), the speed is only 10 MB/s. This shows that using the card slot may have the limit with the write speed to only 10 MB/s, whereas I do the same test with eMMC and get the result of 66MB/s, so I would say maybe it is not worth using the SD card to run your system. Feel free to post any test result, we can further discuss this.

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#6

This makes the larger eMMC quite attractive. How large of an microSD can these r0’s use?

#7

SoC supports SDXC so maximum size 2TB.

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#8

Thanks, plenty of room there then.