XYZ Printing Da Vinci Jr (w) / Da Vinci Mini (w) Hacking (Page 14 of 31)

I think you are mistaken.  The eeprom we are discussing is used for UID / Spool SNs / and remaining length on that spool.  We have review the actual eprom dump and that is all that is on there.  See attached files from Daniel456 a page or 2 back.

Right, wrong or indifferent this is the one I ordered:

http://www.ebay.com/itm/201316582787

Sorry the picture is so dark but it is night time here. I believe this is the JR eeprom:

He gave me the whole rom, some 4mb in size uncompressed.
The firmware starts from 0x2000.
For a sample, lets take a look at one of the, *probable*, .rodata sections. A list of commands and responses .

Edit:
It just swallowed the image.

https://drive.google.com/file/d/0B0HS1n … sp=sharing

The one Daniel gave me. I am not sure I can post it. There is some sort of serial number in it. He will have to decide if he feels comfortable with it. (not trying to be an arse, but outing his serial number seems crossing a line. I would dump mine, but not quite got the hang of desoldering those chips without destroying them. (I have.. done so before. Not pleasant)

So sorry to hear about your loss. Our prayers are with you.

For the business part: https://drive.google.com/file/d/0B0HS1n … sp=sharing <-- That is the link to the firmware. Looks like i was wrong about the serial. I just royally screwed up desoldering it and destroyed the chip, but it looks like the printer actually boots without it. Will have to test resetting and toying with it without the chip.

For the personal part, Daniel:

I am so sorry for your loss. Come back if you feel like its a good distraction, but otherwise, nobody expects you to be on your feet. Take care of yourself, and your family.

Sweden . Might order a few in a couple of days. First though, I am gonna try and see if it works without the chip. It boots, that much is clear. Might just be the recovery mode that is borked?

Very interesting.  What firmware level is your printer?
Have you tried another spool in there.  I would assume that it would work.  I also assume that it will still update the spool tag, but his may be able to let you just re-program the same tag over and over.

That is amazing! Good work to everyone! .

No, it definately looked like there was code in the dump. To the point where I am extremely surprised at it working without it.

Would try putting idapro on one of a likely looking blocks, but.. my energylevels are toast.
It does have free/openrtos in there, along with all the strings for answers to the protocols. Very confusing.

And right now both printers are printing without eeproms, and with their tags reset to 300m.

In other words, they don´t need the eeprom at all, just cut it´s legs and reset the tags with a cheap Arduino and PN532 shield, or use emutag.

So $12-13 US and a sharp knife is all you need, oh and the password for your tag.

Unless of course this is stopped in a future firmware.

This is with a Mini w, not the JR, unless someone has tried it on a JR yet?

Menu options? . On the mini w, no options, apart from in xyzware. All those report everything is fine.
Heck, even the recovery mode seems to work, though I have not actually tried to *use* it yet.

I wrote some arduino code to reset a tag automatically, with this:

https://www.kjell.com/se/sortiment/el-v … ino-p87911

For the non-swedish folk, thats about 10 euros for a RC522 arduino shield with some extra tags and shit bundled.
So, uhm.. like 25$ in total for a tag resetter solution? . gently unsolder just the two data pins on the chip (so if we are super duper wrong about something, super easy to fix). Get your hands on a 10 euro arduino, and the 10 euro shield, and 5$ for a tag password. Bam. Solved.

(I have to try if my solution works, . But that will have to wait for.. uhm. Like 8 hours for my stuuuupid print to finish up)