DaVinci Junior cartridge reset (Page 10 of 58)

jakecrowley wrote:

DocD7 wrote:

Provided we can get this thing licked, is the stock hot end up to the task of ABS? Can it handle the temps? Are there any specs on the hot end at all? Just thinking ahead and out loud as it were.

I can't really find anything on the hot end. I can see if it can get up to the temp abs were to melt at, I already can print fine at 230.

There is lots if pla that will melt at 190. Just depends on the brand.

I really don't know anything about repetier to begin with. I saw that it was able to be flashed to ATMEGA 2560 AVR using the Arduino IDE. I believe this is exactly the setup that RAMPS uses. I assumed it was for AVR only. Since the Jr. is the only printer I know anything about, I really have no idea what's been done on the DaVinci 1.0, 1.0a, or the 2.0. Further, it doesn't HAVE to be repetier - Could be Marlin or any of the other reasonable FWs out there. I really don't know what's available. I've just seen repetier everywhere so that was the first to come to mind.

As far as filaments go: everything I've read so far about all kinds of different brands, sizes, colors, etc., can pretty much be summed up in 4 words - Your Mileage May Vary. There are just too many variables to account for. So, let's make it really simple - if it works for you, then it's great! If it doesn't, try something else! Different brand, different temp, kaptan tape, heated bed, glue stick, aquanet, whatever! Simply put there's a filament out there for every person, every purpose, and every combination of hardware and settings. Okay, mini-rant over.

carl_m1968 wrote:

DocD7 wrote:

I really don't know anything about repetier to begin with. I saw that it was able to be flashed to ATMEGA 2560 AVR using the Arduino IDE. I believe this is exactly the setup that RAMPS uses. I assumed it was for AVR only. Since the Jr. is the only printer I know anything about, I really have no idea what's been done on the DaVinci 1.0, 1.0a, or the 2.0. Further, it doesn't HAVE to be repetier - Could be Marlin or any of the other reasonable FWs out there. I really don't know what's available. I've just seen repetier everywhere so that was the first to come to mind.

As far as filaments go: everything I've read so far about all kinds of different brands, sizes, colors, etc., can pretty much be summed up in 4 words - Your Mileage May Vary. There are just too many variables to account for. So, let's make it really simple - if it works for you, then it's great! If it doesn't, try something else! Different brand, different temp, kaptan tape, heated bed, glue stick, aquanet, whatever! Simply put there's a filament out there for every person, every purpose, and every combination of hardware and settings. Okay, mini-rant over.

The Jr. uses the same processor as all other Da Vinci printers. It does have unique board which means the pins are probably different from the other flavors. Repetier firmware is the only firmware that has been ported to XYZ machines and would be the best option as the only thing neede would be to change pin assignments for the most part. Others like Marlin would need to be done from scratch.

So, if I've read everything right: There's already a FW for this chipset and a pin trace is really all that stands between XYZ and our sanity!?

carl_m1968 wrote:

DocD7 wrote:

So, if I've read everything right: There's already a FW for this chipset and a pin trace is really all that stands between XYZ and our sanity!?

For the most part, yes. There might be some minor nuances to work out but it still should be close. I think the issue is there are not that many people with the Jr. so people like luc that did the port for the other versions probably don't see enough demand to make the effort.

Well, I have one and several of the folks on this thread have one - that's enough demand for me! Unfortunately, I have my EMT refresher this weekend and a 48-hour shift Monday and Tuesday. But I can get a start on things Wednesday maybe.

Hello All:

I thought I would share some info and kind of summarize about the DaVinci Jr.

Q: Can the daVinci Jr physically print with non XYZ filament?
A: Yes.  I have been printing with many diff filaments with the unit for some time and have gotten what I consider excellent results.

Q: Do I need to use the XYZ software to slice?
A: No.  Using Slic3r or another slicer you can slice your object to Gcode. This Gcode can be converted to a .3W file and printed to the unit. I will post a utility for doing this shortly ( I have to clean it up).

Q: Whats the deal with running out of filament, ie the chip that comes with the filament roll.
A:  WORKING ON IT NOW.  The end solution is to write a chip with 999999 meters and use it forever

The long and short of it is, that there is an NFC chip that is read and written to by the printer.
This chip decrements the count of filament and eventually will get to zero, thereby no longer printing.

This NFC technology has many features, and there is info that can be read without a Key and some that can be read with a key.  It is this key that will allow us to work around this protection scheme.

To solve this I have started with the simplest attempts and will continue to take stronger measures.

The key we need is a 12 digit Hex string or 6 bytes. Sounds like a simple thing but its like 268million combinations. 

So, the key can either be simple; a fixed 6 bytes like '010203040506' or algorithmic; meaning it is calculated based on the readable info from the chip based on some algorithm.

a fixed key is unlikely however, I have been attempting to walk the hex code from the firmware in a 6 byte shift all weekend anyway.

the next step will involve more drastic measures, sniffing the RF communication between the printer and spool. 
This would allow us to possible re-write existing chips and change the filament value.

I am confident that we will be able to work around this NFC issue fairly soon.

DocD7 wrote:

As far as I've been able to tell, there really isn't a bed leveling function on the Jr. At least not one that matters. The bed is actually fixed to the y axis and not really adjustable. I did have to prop up the right side of the x axis to get it mostly level WRT the bed. So no big deal as far as I'm concerned.

There is no auto bed leveling.  They just state no calibration needed which is also not really true.

The key we need is a 12 digit Hex string or 6 bytes. Sounds like a simple thing but its like 268million combinations. 

So, the key can either be simple; a fixed 6 bytes like '010203040506' or algorithmic; meaning it is calculated based on the readable info from the chip based on some algorithm.

a fixed key is unlikely however, I have been attempting to walk the hex code from the firmware in a 6 byte shift all weekend anyway.

the next step will involve more drastic measures, sniffing the RF communication between the printer and spool. 
This would allow us to possible re-write existing chips and change the filament value.