A Feature I Would Find Invaluable - RFID Tags on the Steel Sheets
 
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A Feature I Would Find Invaluable - RFID Tags on the Steel Sheets  

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cwbullet
(@cwbullet)
Illustrious Member
RE: A Feature I Would Find Invaluable - RFID Tags on the Steel Sheets

@swiss_cheese

I don’t know.  It makes sense.

--------------------
Chuck H
3D Printer Review Blog...
Posted : 19/05/2021 3:11 pm
Swiss_Cheese
(@swiss_cheese)
Prominent Member
RE: A Feature I Would Find Invaluable - RFID Tags on the Steel Sheets

I almost never use the latest firmware for my printers, that said they (my printers) notify me after pressing start from my LED terminal that there is a newer version and will pause the print process until I accept the message. Seems simple enough to me to add the exact same function for our more forgetful times 🤔 relative to our sheets, No?

 

once again, just a thought,

 

Swiss_Cheese

The Filament Whisperer...
Posted : 19/05/2021 3:35 pm
fuchsr
(@fuchsr)
Prominent Member
RE: A Feature I Would Find Invaluable - RFID Tags on the Steel Sheets

@swiss_cheese

I use Astroprint, and at one point they added a message "confirm that you cleaned your print bed" that you had to acknowledge before starting a print. Created an uproar (including from you're truly) because the first time around it's a curiosity, but it really gets old quickly. Stuff like that is perhaps useful for some "forgetful" users (which is why Astroprint added it) but for the rest of us it quickly becomes nothing but annoying.

Unless you do it like the "incompatible nozzle" reminder. Which comes up but is not actually blocking your work process. 

Posted : 19/05/2021 3:50 pm
Ringarn67 liked
Ringarn67
(@ringarn67)
Estimable Member
RE: A Feature I Would Find Invaluable - RFID Tags on the Steel Sheets

@swiss_cheese

Beginning of Start G-code in "printer settings"

M862.3 P "[printer_model]" ; printer model check
M862.1 P[nozzle_diameter] ; nozzle diameter check
M115 U3.10.0 ; tell printer latest fw version <--Change this to whatever FW you have in your printer
G90 ; use absolute coordinates
M83 ; extruder relative mode

I tested this in the beginning of start G-code:
M862.1 P[nozzle_diameter] ; nozzle diameter check
M115 U3.10.0 ; tell printer latest fw version
M117 Check Plate Type
M601
G90 ; use absolute coordinates
M83 ; extruder relative mode

The message "Check Plate Type" flashed by on the display and then "Print paused". Perfect 😀 
NOT, the text with selected sheet is replaced with 0% as soon as the program starts 😌  

Prusa I3 MK3S+ (kit dec -20), PrusaSlicer, Fusion 360, Windows 10...
Posted : 19/05/2021 4:40 pm
Ringarn67
(@ringarn67)
Estimable Member
RE: A Feature I Would Find Invaluable - RFID Tags on the Steel Sheets

@dan-rogers

QR-code, is that hard to read?

Don´t ask me how to get a QR-code that can handle window cleaner, dish wash, IPA or aceton stick on the bed sheet. 😶
And heat, of course.
Unless Prusa print it there from the start

Prusa I3 MK3S+ (kit dec -20), PrusaSlicer, Fusion 360, Windows 10...
Posted : 19/05/2021 4:51 pm
Dan Rogers
(@dan-rogers)
Prominent Member
RE: A Feature I Would Find Invaluable - RFID Tags on the Steel Sheets

QR code or even a barcode would be another approach that could be integrated into a python plug in.  Not saying can only be done with AI, but AI image classification or even classical learning image classification could be an approach as well.

The Image classification approach would be more generic, since a plug-in would not need any modifications on the part of the user if it could distinguish smooth PEI from Textured Sheet from Powder coated sheet just from a snapshot fed into a classifier.  There are only 3 nodes on the output if that is done with a library like Keras.  

Like any software problem, there are hundreds of ways it _could_ be done.  For people that do not use control software, cheeses "check your plate" user prompt is the easiest one because it would integrate directly into prusa config profiles.  A classification or barcode approach would require an extensible control framework such as provided by Octo-print, but would only work for users that have web cams tied into their octoprint (most do) - and if there is G code that would tell the printer to switch sheet profiles, it could be made totally automatic.

But I'm solutioning now - it's entirely doable.

Posted : 19/05/2021 5:15 pm
bobstro
(@bobstro)
Illustrious Member
RE: A Feature I Would Find Invaluable - RFID Tags on the Steel Sheets
Posted by: @fuchsr

[...] Created an uproar (including from you're truly) because the first time around it's a curiosity, but it really gets old quickly. Stuff like that is perhaps useful for some "forgetful" users (which is why Astroprint added it) but for the rest of us it quickly becomes nothing but annoying.

Agreed 100%. I am the only user of my system and will sometimes print gcode with the "wrong" nozzle on purpose. I have disabled every one of the firmware, printer, and nozzle checks in firmware. I'm fine with adding such "safety" checks but find them still very error-prone (how long before you start clicking 4 times automatically as a habit to get through the checks?) and annoying as hell. Provide the ability to ignore the hand-hold, shoe tying checks for any such thing that gets implemented.

In general, any "simple" scanning is going to require much more printer hardware than can readily be handled by the 8 bit controller on the Mk3. This isn't something I would be happy about paying for, and in the cost-competitive world of 3D printing, I don't think it would be a compelling enough feature for Prusa to risk lost sales due to cost increases. With the supply chain issues in the world today, I'd be extremely frustrated to have ordered a printer, only to be notified that delivery has been delayed due to limited supplies of the RFID reader. Reminds me of the "lemon-scented towelettes" story in the Hitchiker's Guide to the Galaxy.

 

My notes and disclaimers on 3D printing and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan...
Posted : 19/05/2021 5:22 pm
Ringarn67
(@ringarn67)
Estimable Member
RE: A Feature I Would Find Invaluable - RFID Tags on the Steel Sheets

@bobstro @fuchsr

Agreed, I have one printer and I am the only user, when I push my SD-card in I want to PRINT not push the button.
As you said, I would just push the button a bunch of times until the print begins.

But it is fun to do some tinkering and testing just because you can😊 

@dan-rogers

When I read your last sentence, "....it could be made totally automatic." I thought of this video 😲 

 

Prusa I3 MK3S+ (kit dec -20), PrusaSlicer, Fusion 360, Windows 10...
Posted : 19/05/2021 6:19 pm
Swiss_Cheese
(@swiss_cheese)
Prominent Member
RE: A Feature I Would Find Invaluable - RFID Tags on the Steel Sheets

No reason for an uproar you could simply add it if you wanted, I wasn't even suggesting a new firmware version for the feature I was suggesting that those afflicted could simply add it to there G-code in a way that is already implemented, as @ringarn67 has so kindly posted a g-code for.

 

So to be clear I was just offering a solution to individuals that desired to use it.

 

Thank you ringarn67 for expounding on that.

 

Swiss_Cheese

The Filament Whisperer...
Posted : 19/05/2021 6:55 pm
Ringarn67 liked
Dan Rogers
(@dan-rogers)
Prominent Member
RE: A Feature I Would Find Invaluable - RFID Tags on the Steel Sheets

@ringarn67

So, you want a toaster.  The art has a long way to go before you plug in an SD card, and the printer figures which file you want, changes the nozzle and filament type to the style required for the file you chose, and starts printing.

 

Posted : 19/05/2021 6:59 pm
Chris W.
(@chris-w)
Active Member
Topic starter answered:
RE: A Feature I Would Find Invaluable - RFID Tags on the Steel Sheets

@swiss_cheese

I saw somewhere someone had posted some GCODE for just such a message.  It's a really good first step.

Posted : 19/05/2021 7:04 pm
Chris W.
(@chris-w)
Active Member
Topic starter answered:
RE: A Feature I Would Find Invaluable - RFID Tags on the Steel Sheets

@cwbullet

A Raspberry Pi is definitely capable, I have a functional facial recognition app that I put together on a PI 3b.  Trained it on the PI, too, so it doesn't take that much processing power to do.  It can recognize any of 6 people in my family.  Doesn't do well with minors but adults are no problem.  But for the plate recognition, I was thinking a bar-code would be pretty simple but as people have pointed out, how to get it permanently mounted is the question.  I don't know about others but my two PEI sheets look exactly the same other than the "2" I have written on the corner of the second one with a perm. marker. 

Posted : 19/05/2021 7:12 pm
cwbullet
(@cwbullet)
Illustrious Member
RE: A Feature I Would Find Invaluable - RFID Tags on the Steel Sheets
Posted by: @dan-rogers

@ringarn67

So, you want a toaster.  The art has a long way to go before you plug in an SD card, and the printer figures which file you want, changes the nozzle and filament type to the style required for the file you chose, and starts printing.

 

Do you mean push button equals toaster?

--------------------
Chuck H
3D Printer Review Blog...
Posted : 19/05/2021 7:23 pm
cwbullet
(@cwbullet)
Illustrious Member
RE: A Feature I Would Find Invaluable - RFID Tags on the Steel Sheets
Posted by: @chris-w

@cwbullet

A Raspberry Pi is definitely capable, I have a functional facial recognition app that I put together on a PI 3b.  Trained it on the PI, too, so it doesn't take that much processing power to do.  It can recognize any of 6 people in my family.  Doesn't do well with minors but adults are no problem.  But for the plate recognition, I was thinking a bar-code would be pretty simple but as people have pointed out, how to get it permanently mounted is the question.  I don't know about others but my two PEI sheets look exactly the same other than the "2" I have written on the corner of the second one with a perm. marker. 

Thanks.  It just seems like such a simple item.  I am old and it hard to believe this thing is as powerful or more powerful than the computer i had as a kid.  

--------------------
Chuck H
3D Printer Review Blog...
Posted : 19/05/2021 7:26 pm
Ringarn67
(@ringarn67)
Estimable Member
RE: A Feature I Would Find Invaluable - RFID Tags on the Steel Sheets

@dan-rogers

No, no, definitely not a toaster, the other way around 🙂 
I bought my printer for two reasons, the main one is the tinkering and testing, and it is an interesting, and very new to me, technology.
And if I now and then can make something useful I consider that a bonus 👍 

So, regarding the video, I have no need, or use, for such a thing, but it would be so fun trying to build it, and I would learn a lot along the way 👍 

/ringarn67

Prusa I3 MK3S+ (kit dec -20), PrusaSlicer, Fusion 360, Windows 10...
Posted : 19/05/2021 7:40 pm
bobstro
(@bobstro)
Illustrious Member
RE: A Feature I Would Find Invaluable - RFID Tags on the Steel Sheets

You could certainly rig up a RPi to recognize a bar code, QR code. RFID tag, color or a myriad of other differentiators. Then you'd have to generate the appropriate codes for each sheet, apply it, keep it up to date, and calibrate it. Definitely a fun hobby project, and probably doable for $120-200. It's just not something that is likely to be a selling point for an out-of-the-box Mk3. Hell, rig up a robot arm and you can push a button to place the correct sheet on the bed like an old jukebox!

I stick a piece of blue painter's tape on each sheet and look at it when I mount a new sheet. That's about all I want to deal with.

My notes and disclaimers on 3D printing and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan...
Posted : 19/05/2021 8:58 pm
jF
 jF
(@jf-2)
Active Member
RE: A Feature I Would Find Invaluable - RFID Tags on the Steel Sheets
Posted by: @dan-rogers

and 1 a textured sheet - I got that to get fancy.  I have not needed to get fancy yet.  Not even once.  I read it's good for PETG.  

You should really try it with PETG. I also only print PETG and that textured sheet is freaking amazing. Hardly need anything for PETG to stick. I even use it the rare time I print PLA.

The flat plate is actually the one I use for fanciness when I want a flat bottom with no texture.

Glue stick is nice with the textured one but I found Magigoo to be amazing with PETG and this plate. Stuff stick really hard when it's hot. Like I can grab my print and the plate will follow. I can shake it and it won't get off. But the second the plate cold stuff just came off with no effort and it's ready to reuse a bunch of times before you need to reapply some more.

Haven't really used the flat one that much, so can't really compare them, but that's my 2 cents on the textured one.

This post was modified 3 months ago by jF
Posted : 19/05/2021 9:25 pm
Ringarn67 liked
Diem
 Diem
(@diem)
Prominent Member
RE: A Feature I Would Find Invaluable - RFID Tags on the Steel Sheets

@cwbullet

I am old and it hard to believe this thing is as powerful or more powerful than the computer i had as a kid.

Far more powerful; even the bottom of the range Pi0 is better than any of the consumer computers from 30 years ago.  The latest models are as good as anything you might have bought 8 years back - at pocket money prices.  For many purposes they are perfectly good desktop workstations.

They are capable of 3D rendering but to be fair they are slow-ish.  Prusa Slicer runs fine...  One of mine runs as NAS, print server, intranet server, media server and CGI sandpit - using 6W power.

And they are cheap enough to buy just to play with.

Cheerio,

Posted : 19/05/2021 9:31 pm
Swiss_Cheese
(@swiss_cheese)
Prominent Member
RE: A Feature I Would Find Invaluable - RFID Tags on the Steel Sheets
Posted by: @ringarn67

@dan-rogers

QR-code, is that hard to read?

Don´t ask me how to get a QR-code that can handle window cleaner, dish wash, IPA or aceton stick on the bed sheet. 😶
And heat, of course.
Unless Prusa print it there from the start

you would need a minimum 30Watt fiber laser, if you care to come over I have one. 😊 

The Filament Whisperer...
Posted : 19/05/2021 11:26 pm
Ringarn67 liked
cwbullet
(@cwbullet)
Illustrious Member
RE: A Feature I Would Find Invaluable - RFID Tags on the Steel Sheets

@diem

It is amazing!  I have a good 10-20 left in me, god be willing, and I can't wait to see what is next.  

--------------------
Chuck H
3D Printer Review Blog...
Posted : 19/05/2021 11:26 pm
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