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USB won't show files, just random code  

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BadWolf
(@badwolf)
New Member
USB won't show files, just random code

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.

Posted : 29/06/2022 2:30 pm
mark
 mark
(@mark-3)
Reputable Member
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

Posted : 29/06/2022 3:35 pm
BadWolf
(@badwolf)
New Member
Topic starter answered:
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 🙂

Posted : 29/06/2022 3:49 pm
mark
 mark
(@mark-3)
Reputable Member
RE: USB won't show files, just random code

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

Regards,

Mark

Posted : 29/06/2022 3:53 pm
JoanTabb
(@joantabb)
Moderator
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

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 29/06/2022 6:46 pm
BadWolf
(@badwolf)
New Member
Topic starter answered:
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

Posted : 30/06/2022 3:10 pm
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