good evening YouTube so I picked up this twenty by four liquid crystal display twenty characters four
lines and this is a display and control unit for a 3d printer for the rhumba controller board which I
have in my series one Pro 3d printer picked this up off of Aliexpress just came in this week and I
was looking for a case to put this in so I can mount this outside of the printer so I went on
Thingiverse and found this wasn't quite the right size and then I searched around and found a case
for the 2004 display and the top just fits just perfect there yeah it's not quite there I'm not
sure what's what's not fitting right there but that's pretty pretty close yeah I'll have to
figure out what's what's getting in the way there the hole isn't quite centered there you can see
how a fitting so maybe if I enlarge the hole a little bit that might work and then the backside
so they have the backside set up you've got your connectors for the two cables and you've got your
SD card slot and then there's an adjuster knob for the contrast I guess on this side it looks okay
looks like everything's gonna fit but if you go on the back side these connector cutouts are a little
bit off and then the same with that hole for the trimmer capacitor there you can see there it lines
up but they're a dozen okay success here so I got the front fit in there turns out this hole I think
was okay what it was was this edge of the display cut out I had to take a couple of millimeters off
of that so I just filed that down moved the edge inward a bit because what was happening was the
case wouldn't go down the whole thing was shifted over that way about the thickness of the wall so
it turns out it's this edge right here you have to move it back file a little bit test fit and
you can see the gap right there so the that gap that's there was taken off of that side but now
I got my push button I got the rotary switch and then in the back I just moved the opening over a
little bit and then the same on the contrast adjuster right there so I think that's going
to work okay YouTube looks like strike one here I took my Smart LCD controller plugged it in here I
think the pins are correct I've got the red line on the ribbon cables over on this side and there's
the display I get two lines full of every pixel on and then the other two lines are empty and I don't
get any beeping from the the buzzer there which I guess if you get beeping that means the cables
are not in their correct but I am guessing that when Taipei machines built the Marlin firmware
for the Rumba board they didn't include the code to drive the LCD and I looked on the octoprint
monitor output and there's no error messages which I guess you would get if there were some problem
with the display so I've got a host on the taipei machines mmunity forum to see if anybody knows if
there's a way to get that to turn on but I think for now I guess I'll have to just stop here I
do have a rumba board coming because I want to actually put this and the rumba board together
and experiment without a bit just to get familiar with this rather than messing around with the one
in my printer I figured it might be nicer to get a separate standalone version I think for now I'll
just shut this down unplug it put the cover back down this particular machine has no front panel so
yeah this this is what I actually used to talk to the printer I have octa droid running here
on my Samsung tablet and you can run the controls from the tablet which is okay but you have to have
a tablet here all the time and one of these is a lot less money than a tablet and it's also a lot
more direct because on the octa droid you've got motion here and then you've got your temperature
here and you have your files here you know you have to keep switching from one screen to the
other it's okay but it would be nice to have just a single screen that you can just click
through the menus on the octa droid for example you can set the temperatures but none of the
actual temperatures read out for some reason so if you set the extruder to 220 C it'll go
to 220 C but it never shows you what the actual temperature is where I'm hoping this controller
would actually show you all those details it looks like they've turned off or not compiled the code
to include this so until I either get a response from someone on the type a machines forum or I get
my own rumba board to play with and get a little experience there I think I will call that quits