I’m at my wits end with these intermittent print failures on the kingroon KP5L. Here’s the relevant section of log: Stats 1854.7: gcodein=0 mcu: mcu_awake=0.007 mcu_task_avg=0.000023 mcu_task_stdd - Pastebin.com
It can happen at any point, but usually early in the print. With the same gcode, I’ve had it happen at various points in the first 5 layers, but occasionally it gets into the 20s. Once it printed about a hundred layers before crapping out.
The failure always starts in the log with a “Got EOF when reading from device”. The printer will freeze, and klipper will display “lost communication with MCU” or something to that effect. Hitting firmware restart twice re-establishes communication with the printer. Once never does it, twice always does.
At this point I have swapped out the power supply, USB cable, microSD card, and RPi. Is the printer board itself causing the issue? I only had the printer for a couple weeks before converting it to klipper, but it seemed fine in that time. I completed a couple 10hr+ prints with the stock FW, so I don’t think the board is physically faulty. Conversely, I have occasionally had prints complete since converting to klipper. Not often, but it has happened.
Is there anything else I can try?
