LCD (or other) control panel. Mainly for filament change.

In other treads I have seen mention of changing filament in mid print.

As I looked into that, seems a Control Panel might be a reasonable way to go. However, in looking into adding a Control Panel, all sorts of pitfalls were mentioned, and, the posts seemed quite dated.

So, any new versions, fixes, etc for a good reasonable cost CP that does not require "a lot of custom work"?

Then again, looking at Matter Control, there is a means of creating a Macro, so may that is a saner way to go, given how infrequently I would likely be doing filament changes mid print.

 

Seems with the Full Graphics there are versions with "*2004LCD Controller" and "12864LCD(3.2’)". Significant difference?

 

Ah, I see there is a size difference. Any practical advantage to the larger display?

 

Trying to install the smart LCD and, of course, cannot find the threads that describe the cable problems, having to reverse one, or both due to pin 1 orientation issues.

Since they are keyed, I do not want to mangle them needlessly. The issue is: LCD lights, but no display.

 

Full Graphic, 12864 display. I found something that mentions having to have "firmware loaded" on the board for anything to display on the screen. I did try reversing the cables and the screen did not light. Orienting them as originally inserted still shows a backlit LCD but no text or other display.

If firmware needs to be loaded to the board, I must have missed that part, somehow.

 

Apparently that reference is to the Printer firmware, not firmware on the LCD controller.

 

Yeah, I blindly downloaded the latest library and got a boatload of compile errors. Downloaded 1.14 and that compiled OK.

I was thrown a curve when the LCD was on, even when the printer was "off". Took me a couple minutes to realize the USB was supplying power to it. I also noticed the LCD froze while scrolling with the USB still connected.

There is still something amiss, as "Auto Home" homes X and Y, then slews out a few inches to home Z. That can't be right.

 

I was going to rummage through it if no one had had a ready answer. However, now I am intrigued by the mention of Pi. I have one laying around I was messing with, then set aside as in, cute, but no real use for it.

 

Well, maybe I'll try that on the Big Box I have sitting on the side. Or. since I still have to print out a box/mount for this LCD, maybe I will rethink it.

But, since I have invested a whole $15.00 (mol) I'd hate for it to go to waste this soon.

Now for a trip down source code lane. I'll start with configuration.h and look for something obvious.

 

It appears to be something with the LCD control. With the USB connected and online with Matter Control, it homes as expected. Using the home function on the LCD control is wacked.

BTW, the freeze of the LCD has not happened again.