Firmware for geeetech 3D printers

[MadScientist]

I have edited latest Marlin-RC8 1.1.0 firmware to fit it in MeCreator 2 and GT2560 Rev.B board. Feel free to try it, but remember it is a release candidate – use with caution! I used Arduino 1.8.1.

I appreciate your feedback.

[Mahai]

Hi MadScientist.

I tried "your" firmware. Works very well, out of the box. Many thanks.
The extruder moves are much more smooth. I guess there is some acceleration control. Positive effect is, the printer does not shake anymore.
On the other hand, with the same slic3r settings, the printing time is about 50% longer. I guess because of the acceleration control.
Especialy honycomp infill is VERY slow.
Do you have a list of all changes you did in configuration.h ?

Regards, Mahai

[MadScientist]

Configuration file slipped through the false values, sorry.

Here are the correct values like they are in official firmware:

#define DEFAULT_AXIS_STEPS_PER_UNIT { 80, 80, 400, 93 }
#define DEFAULT_MAX_FEEDRATE { 400, 400, 400, 45 }
#define DEFAULT_MAX_ACCELERATION { 5000, 5000, 50, 5000 }
#define DEFAULT_ACCELERATION 1000 // X, Y, Z and E acceleration for printing moves
#define DEFAULT_RETRACT_ACCELERATION 2000 // E acceleration for retracts
#define DEFAULT_TRAVEL_ACCELERATION 2500 // X, Y, Z acceleration for travel (non printing) moves
#define DEFAULT_XJERK 20.0
#define DEFAULT_YJERK 20.0
#define DEFAULT_ZJERK 0.4
#define DEFAULT_EJERK 5.0

Naturally printer will start to shake again, but speed and printting quality are better. To reduce shaking you can adjust xjerk, yjerk and acceleration values. And when you find sweet spot of values, please post your settings.

[Mahai]

Why do you think print quality is better with larger (faster) acceleration?
I would expect the opposite.

[inverted]

If I'm not mistaken, faster acceleration and higher jerk produces sharper corners.

[MadScientist]

If I'm not mistaken, faster acceleration and higher jerk produces sharper corners.

This is exactly what i'm thinking too.

[gpau]

hi,
in firmware settings that I have pa printing two colors in Geeetech i3 Pro C

[Mako]

Hi,

I have a 3D printer PI3A Pro and I suspect its Z axis is reversed, because when I send it to origin (and Z home consecutively), it goes up instead down.

So I tried to change it on the firmware, for that,
I'm utilizing Arduino 1.0.1 and downloaded the following firmwares:

• I3A Pro
  PI3A Pro(for the upgraded kit using lead screw)

and both of them are appointing the same erros when verifying, even before any change and after importing U8glib library.


http://www.dropbox.com/s/yzjqw8u6gk9ys9 ... s.jpg?dl=0

[bang]

Hi,

I have a 3D printer PI3A Pro and I suspect its Z axis is reversed, because when I send it to origin (and Z home consecutively), it goes up instead down.

So I tried to change it on the firmware, for that,
I'm utilizing Arduino 1.0.1 and downloaded the following firmwares:

• I3A Pro
  PI3A Pro(for the upgraded kit using lead screw)

and both of them are appointing the same erros when verifying, even before any change and after importing U8glib library.


http://www.dropbox.com/s/yzjqw8u6gk9ys9 ... s.jpg?dl=0

Hi,
Have you read this post?

U8glib.jpg (19.54 KiB) Viewed 18318 times

Download the file and retry it.

U8glib.zip

(1019.62 KiB) Downloaded 745 times

[Eloy]

Hello, I have a P i3 x PRO and I need the new firmware for that. Where can I download it?
Is it posible to make a copy of the original firmware before the upgrade?
Sorry for my English

Regards
Eloy