Printing over USB cable with Robo3D R2

I was more asking about OP's goals and reasons for wanting USB printing, because like normal people often do he might have been thinking he wants it for the wrong reasons becasue of bad understanding. I've understood that you loved spending time on stuff that makes zero sense to me, no problem with that, good for you
Love to tinker as well, but I keep my focus on stuff I find makes sense in a broader context.

Just don't try to push it as an awful standard feature we'd have no choice but to adopt I do NOT want to ever have to use/stand such a thing. It's cool in movies, but stops there in my view.

And? Don't need it for anything a normal customer for these printers would want to do.

If the pi's system is corrupted which is what happens in the problematic cases, no, not even worth investigating.
Again maybe "cool stuff" for you, but when looking at real world scenarios it's no help for what people actually have problems with. If you want to help victims of a corrupted Pi card you write a small piece of multiplatform software that with a single click fetches and rewrites the image on the card for example.

The former is a better description for the latter - you can do that, but if you do so you'll end up not with honey but with a pile of stuff nobody but the coders themselves can make use of. A bit like your answers to some of them poor guys you often anywer their question by coming with a totally over the top convoluted thing they have no way of even knowing what you're talking about, when the actual practical solution at their level is akin to flipping a switch

You need both the coders and the thinkers for things to work in product design, the thinker knows what to do but gets lost how, the coder knows how to do but not why/where it should be going.

 

Well, I did answer before in a great big font that the device cable won't work. The rest of this is just tomfoolery.

At least I'm not a PhD mathematician. This guy actually wanted me to participate in a conversation about "what it felt like to be a positive integer". I'm not kidding.

 

LOL

 

For three coders, we had twelve PMs believe it or not. They would produce what I would call non-specs on a daily basis.

Coder: "This new software, what would you like this to do?"
PM: "We want to make a lot of money."
Coder: "Okay, that's interesting. And this thing that we're supposed to make, what sort of screens might be involved?"
PM: "I ate a lava lamp. : pause : It didn't taste like lava."

 

Huzzah...?

 

That's the big problem - PM's are needed, but there are so many poor ones becasue nobody understands they need to be qualified, and it becomes the standard "parking position" for inept people.

 

I swear to you that this is a real conversation from today:

PM: "Can you help me? I used to be able to add tasks but I can't now."
Me: "Let's take a look. I don't really see why Outlook wouldn't allow you to do that."
: five minutes later and still in Outlook on her workstation :
PM: "Oh wait, not Outlook... somewhere in Windows"
Me: "So... the Task Scheduler then?"
PM: "Yeah"
: while she's on the phone with Accounting, I create a recurring task in about 30 seconds and prove that it works :
PM: "I did that but mine didn't display anything."
Me: "You should delete yours and use mine then."
PM: "Why did yours run?"
Me: "You have to click the RUN button if you want it to run, right?"
PM: "Why would you have to run it? Why doesn't it run automatically?"
Me: "That's a great question that you should ask Bill Gates."
PM: "Can I edit your task then?"
Me: "Sure"
: watches her edit my Test task so that it will remind her every day, starting at 7AM each morning to drink water every hour :
Windows popup: "Drink water"
Me: "Okay, so it appears to be working now."
PM: "Oh, but it didn't do it on the hour. I want it to do it on the hour."
Me: "I guess you'll need to edit it again then..."
: trying to walk out the door :
PM: "But what if it doesn't display again later?"
Me: "I'm guessing that the later stages of dehydration will kick in at some point."
: walks out the door :

 

Today's conversation:

PM: "I need a male-to-male adapter for a serial cable."
Me: "Are you sure about that? Can I see the computer you're trying to connect it to?"
PM: "I know what I'm doing. I just need the adapter."
Me: "I'm sure you do. Which computer are we talking about?"
PM: "It's in Glasswash right now. Don't you have any adapters?"
Me: "I have lots of adapters but it's best if I see the computer so that I make sure it's going to fit."
: now in Glasswash :
PM: "We're trying to put this cable into the serial connection on the back of the laptop." : pointing :
Me: "Hm..., if it's a female-looking serial connection on the back of a laptop, we like to call that a VGA connector, only we never plug serial things into it because then we'd probably fry the PLC inside the Honeywell panel, right?"