Yes, the display is a bit strange. Never found why it needs a “bootstrap” to work properly.
Maybe there’s a setting in EEPROM which isn’t initialized after the firmware change.
I thought I changed the contrast settings to some moderate value.
So you switched back to the AZSMZ_12864? Or did you use the display type from Velleman?
Because the latter had a problem by rotating the whole screen by 32lines.
thank you for this, a lot more features/options with the 2.0.7 firmware coming from the 1.1.4.
some major differences is the calibration and default startup sequence but also it seems to be making more noise.
is this possible? i selected just the stock k8800 option, i don’t have those fancy mods (yet) 
More noise - during homing, calibration or in general?
sorry for the late reply @SusisStrolch the noise is overall present, but when the head is going down, it is really really loud.
I have created a youtube video so you can hear a bit of what I mean. https://www.youtube.com/watch?v=wm0Cz8mXdmU
any idea? I’m printing a lot these days and the printer is in my home office 
edit: I made another video while printing https://www.youtube.com/watch?v=Z-Aigzor9Qc
Still getting compiling error. Using marlin version 1.8.8
How did you compile?? I’ve got still compile error
Hello @Editortje
To compile Marlin, have you try https://platformio.org/ , or https://marlinfw.org/docs/basics/auto_build_marlin.html some VSCode Plugin ? cause Arduino IDE seem to have some dificulties to do it …
platformio works better, what are the errors you are receiving?
there are a lot of guides online on how to compile the marlin firmware
The only error is compiling error. No more details
This firmware is only i hou have heated bed and bltouch . Standard
This firmware is only i hou have heated bed and bltouch.
Read the source, Luke, before spreading nonsense.
In Configuration.h:
// set to true to use settings from Velleman K8800 Marlin 1.1.4
#define VELLEMAN_K8800_STOCK false
And, because we are about READING…
The Marlin Webpage shows in big letters that 2.x will not compile with Arduino IDE and you MUST use platformio to build the firmware.
Hey @SusisStrolch, I did not see your topic… I modded Ug8lib-HAL to comply to the Velleman’s K8800 screen…
Use it if you want to go back to stock screen: Marlin 2.0.7.2 with screen fix - Vertex Delta - Whadda forum - Community Help and Support
Let me know, so I can delete my topic
Hi @Psycho, thanks, but I won’t support Marlin any more.
Together with @11to3 we‘re going the Klipper path, which looks already pretty promising.
Hi @Psycho,
Thanks for your upgrade fix for original stock display in Marlin 2.0.7
It works great. well done 
But i’ve have one question. I see that the “Delta calibration” menu has disappeared.
or not the same as in Firmware 1.1.4.
But when perform a delta calibrate with Marlin 2.0.7 i have Probing Error. the printhead does not touch the bed while probing (it stops few cm above bed and display shows: Probing Error).
And that was not with 1.1.4. Vertex Delta works fine on 1.1.4.
But i want to use the latest Firmware 2.0.7. So I can use more functions implemented in the latest Marlin firmware such as: Status leds (Neopixel leds), Print last SD file, scroll long file names and so on. There were also some bed leveling bug fixes.
I’ve tried also the 1.1.9 firmware. But same probing error as in 2.0.7.
What do i wrong, or is this a fault?
Thanks in advance.
Best rergards,
Onlydreamer
@Onlydreamer usually it’s a M851 issue, you have an offset in there and the probing fails because it starts too high and stops after 10mm
Also, the delta calibration is still there, once you have homed though. Then it’s in the control sub menu
Have managed to merge changes into @SusisStrolch version to 2.0.8.1 - although I had to drop the baudrate to 250000 to get reliability (fix pending I think):
https://github.com/EduMake/Marlin/tree/K8800-2.0.x
Apologies, it has no tags or release labels, but is 2.0.8.1.
What are the issues with the display? I have not noticed any myself, but I build using platformio and its version of the Ug8lib-HAL. Plus I drive pretty much 100% through Octoprint.
hello, I see receiving a motherboard for vertex 8800 but I do not know how to install marlin and the rest. Can you remind me. .Cordially
So finally i got the 2.0.7 working got my bed leveled, 3 screws with 3 springs under the XYZ and a nice print
TomE, still working perfect your k8800?
Could you send picture of your bedplate with the springs.
Hi @EV2001
I shall make an update from all my changes with photos and post it here for the Vertex Delta Lovers.
Regards,
Tom
