Duet WiFi - Prints occassionally just stop

webdad

@webdad The only other data points that I can think of are:

Both instances when the printer stopped were on the same set of sliced models
The print job is composed of 4 separate pieces, it was sliced with S3D 4.1, and the resulting .gcode file is approx. 6.5 MB.
The first time I had this print stop, I thought the sliced file might have been at fault (but I had printed that exact same file many times). After the first stop, I resliced the 4 model configuration and started using the new file. The V2 of that file is what failed today.

Phaedrux

@webdad can you post that file?

webdad

Here is a dropbox link - DB-DI-Cards Set-x2

Let me know if this doesn't work for some reason.

Thanks!

dc42

I suspect a problem reading from the SD card. Please upgrade to firmware 2.02RC2 because over recent firmware versions I've improved the diagnostics and error handling (including retrying) when SD card read or write errors occur.

webdad

@dc42 Thanks! I've had that on the to-do list for a while. Given where I'm at with regards to firmware, is there anything special I need to do or be aware of with the jump to 2.02 with respect to how the upgrade plays out?

Phaedrux

@webdad just be sure to read all the release notes.

webdad

If there is the potential that the SD card is having or on the way to having issues, would it be better just to build a new SD card and copy config files over from the old card? It didn't seem difficult to create a fresh card when I build the DBot a year ago.

Phaedrux

@webdad you can make a copy of the contents of the card if it's still readable and then do a complete wipe of the card with the SD association formatter tool. If there really are problems with it it may report it. Or it may be enough to solve your problem and the card will be fine. There's usually enough spare cells to remap to on the card to remain usable for quite a while.

webdad

@phaedrux Thanks! One simple question that I just wanted to confirm. Is the microSD card just a simple storage area, or does the card have a boot sector that I need to be aware of? In looking at the online doc about the SD card, it just mentions sizing and structure, so I'm thinking that it is just a simple storage area.

I can't recall if I did anything special with dumping a bootable image to the card when I first did my build.

Phaedrux

Simple storage. The firmware gets flashed onto the board itself. The firmware bin file on the card isn't used after that.