USB won't show files, just random code  

RE: USB won't show files, just random code

Posted by: @badwolf

my printer was working great, I was making new files and adding them to the sd/usb and it was working fine. added another one, put it in the printer (mini), and it came up as usual, but I decided i wanted to print a file i had already printed first, so i clicked back, then "print" like usual, but instead of pulling up all my files, it just showed random code maybe ? things like "003rx48000w" (made that up, but they look like that) and there is a big list of them, but none of my files. I took out the usb, put it into my computer and all the files are fine, restarted the printer, and again, it pulls up the last file i added to print automatically, but if i try to print anything else if just shows me the list of random numbers and letters, but no files. i tried emptying the usb and left one file on it. same thing, it pulls up the one file automatically, but if i go back and try to select it again, the whole list is those number/letter codes and no files. I tried actually printing the file it pulls up automatically and that works, I tried adding an additional file and printing when it pulls it up automatically and that works. Its just not allowing me to print from the print menu.

I had a corrupted USB stick. I had to completely reformat it on a computer (not quick format) before it would work again on the Mini. Try reformatting. I've read several accounts of corrupted USB sticks lately.

Regards,

Mark

RE: USB won't show files, just random code

so, this is going to sound dumb haha, but how do I reformat it? I have read other threads about it needing FAT32 or something? I think prusa has instructions I just want to make sure that is what I am actually supposed to do haha.  Thanks 🙂

RE: USB won't show files, just random code

https://help.prusa3d.com/article/sd-cards-and-usb-drives_112291

Regards,

Mark

RE: USB won't show files, just random code

Prusa Mini files  usually start like this 

; generated by PrusaSlicer 2.4.2+win64 on 2022-06-29 at 18:01:01 UTC

;; thumbnail begin 16x16 800; iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAACHklEQVR4AY1TW4sSYRgeWBEULwRvRG; nzkLqGqKPZqKNzchwznW1jDWLBamEJtmijlpYuCoQOUBQIXXYRXdRFRLfRlfRL/ClPPh+N7NYuux+8; MIf3OX3f+0nSCSsajU5qtRoajQYqlco8FAoZ0lmX3+9PlEqleavVglckIumpYCotmueapkFVVRwm4X; s+n5+dqBqPxyeKoojmoamiWq2KqtfrIGG73Rb//otEcKFQmFNhvdPGvlPAveYqntsX8MItQpZlOI4D; y7JgGAY8d+l0+pMUi8WWqkJZlfFYS+LtIIfptTye2WkMm2VcdwwMBoMlEUnYL5GJ1sjMjbpvF/Flq4; Tfu4qoXzs1HHSy2G2sYl9PYrpZRq/Xg2maAid5yrquo9vtYstpCtVX/Sw+3yyKGHT05q+jl1ey2Nsw; RC8xRwg6nQ4O+iXcrZ/DIy2Bp1YK7921I45+3JLx0G2KXrqQbNsWVpiJ2d4N1/BtLOPnziV8XQCnI1; kQ0ckTIynIR1ZdgIkRm8gHfqCL1wvrH0cFfF+QfNi4iNuWjBvrV7HtKNi2ytg0FaHOXtd1IY4xGAwa; PG/mGpuyUNprnccDPSPU+v2+2H269ZRZi+OdL2fB5/MlUqnUjMyOrmJsX4atqeJ0vOI/xuVg0fmxEx; kOh++wgWqHx9gbZapGIpGJdNplyuVyM0byxpfgTCYzW1lZSUhnXbx9zM4BIzgQCBj/9vwBOolDb1F+; HV4AAAAASUVORK5CYII=; thumbnail end;

;; thumbnail begin 220x124 14252; iVBORw0KGgoAAAANSUhEUgAAANwAAAB8CAYAAAACRt5vAAAph0lEQVR4Ae2dZ48cx9GAD7AhG4YMOA; C2YYgUxRzEJJFiuLAXeEcec7pjzsecRTGISaQkiqREZUqyIvUq2JIsK0c4yLIBGzBgwPBHf+FP6Xee; 3qll39z0TM/sbDhqGijs3e7sTupnqrq6qrqhIW8Vbz/72c82T506VcVJU1OT2rlzp+rp6VGNjY36/3; oQjqWtrW3A8U6YMOH6rbfe2tqQt7zVQ7vllluG/epXvzonHXTs2LFqzJgx+jXYeVtaWtSpU6dUR0dH

the section above contains thumbnail information to show on the LCD Screen

and then the files turn to G Code further down the file 

; thumbnail end;;

; external perimeters extrusion width = 0.45mm; perimeters extrusion width = 0.45mm; infill extrusion width = 0.45mm; solid infill extrusion width = 0.45mm; top infill extrusion width = 0.40mm; first layer extrusion width = 0.42mm

; external perimeters extrusion width = 0.45mm
; perimeters extrusion width = 0.45mm
; infill extrusion width = 0.45mm
; solid infill extrusion width = 0.45mm
; top infill extrusion width = 0.40mm
; first layer extrusion width = 0.42mm

; external perimeters extrusion width = 0.45mm
; perimeters extrusion width = 0.45mm
; infill extrusion width = 0.45mm
; solid infill extrusion width = 0.45mm
; top infill extrusion width = 0.40mm
; first layer extrusion width = 0.42mm

; external perimeters extrusion width = 0.45mm
; perimeters extrusion width = 0.45mm
; infill extrusion width = 0.45mm
; solid infill extrusion width = 0.45mm
; top infill extrusion width = 0.40mm
; first layer extrusion width = 0.42mm

M73 P0 R193
M201 X2500 Y2500 Z400 E5000 ; sets maximum accelerations, mm/sec^2
M203 X180 Y180 Z12 E80 ; sets maximum feedrates, mm / sec
M204 P1250 R1250 T2500 ; sets acceleration (P, T) and retract acceleration (R), mm/sec^2
M205 X8.00 Y8.00 Z2.00 E10.00 ; sets the jerk limits, mm/sec
M205 S0 T0 ; sets the minimum extruding and travel feed rate, mm/sec\
M107;TYPE:CustomM862.3 P "MINI" ; printer model check
G90 ; use absolute coordinates
M83 ; extruder relative mode
M104 S170 ; set extruder temp for bed leveling
M140 S60 ; set bed tempM109 R170 ; wait for bed leveling temp
M190 S60 ; wait for bed temp
M204 T1250 ; set travel acceleration
G28 ; home all without mesh bed level
G29 ; mesh bed leveling
M204 T2500 ; restore travel acceleration
M104 S215 ; set extruder temp
G92 E0G1 Y-2 X179 F2400
G1 Z3 F720
M109 S215 ; wait for extruder temp

did you look past the thumbnail info, for Gcode?

Regards  Joan

RE: USB won't show files, just random code

here is about half the list, if I scroll down there is more of the same