Problem (flashing Marlin firmware on Mini Rambo)

[whitedynamics (WD)]

Hello to all the community here,

First of all I am trying to built the MPCNC project:

I am facing an issue with my mini rambo board (chinese clone probably), when I try to flash the Marlin firmware MPCNC_MRambo_T8_16T_LCD from the official github thread of Marlin.

When I compile & upload that firmware from Arduino v1.8.9 (tried also v1.9 BETA) and followed these flash instructions, it shows no errors, but the screen that comes with the board shows only 4 lines of white upside down y characters.
The button beeps & seems that it is moving inside the menus, but no movement coming from the steppers :-/

While, when I flash the same board with the prusa3d , everything works smoothly…the motors respond via the Repetier-Host program & the screen shows correctly the English characters and the menus to navigate!

Can anyone please help me resolve that issue…?

Thanks a lot in advance

 

 

[barry99705 (Barry)]

Need to edit the firmware for that screen. Open the Arduino sofware, then tab over to Configuration.h

Find this part, waaaay down towards the bottom;

//=============================================================================
//======================== LCD / Controller Selection =========================

//======================== (Character-based LCDs) =========================

//=============================================================================

// RepRapDiscount Smart Controller.

// http://reprap.org/wiki/RepRapDiscount_Smart_Controller

// Note: Usually sold with a white PCB.

//#define REPRAP_DISCOUNT_SMART_CONTROLLER

Change that last line to;

#define REPRAP_DISCOUNT_SMART_CONTROLLER

Then a little ways down from there find;
//=============================================================================
//======================= LCD / Controller Selection =======================
//========================= (Graphical LCDs) ========================
//=============================================================================

//
// CONTROLLER TYPE: Graphical 128x64 (DOGM)
//
// IMPORTANT: The U8glib library is required for Graphical Display!
// https://github.com/olikraus/U8glib_Arduino
//

//
// RepRapDiscount FULL GRAPHIC Smart Controller
// http://reprap.org/wiki/RepRapDiscount_Full_Graphic_Smart_Controller
//
#define REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER

And change the last line to;

//#define REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER

After that recompile the firmware and upload it. Should work.

[whitedynamics (WD)]

THANKS a lot @Barry, for your lightning fast response to my problem here!

I followed your instructions above, which were very well written & easy to understand

It worked!!!

[barry99705 (Barry)]

Sweet!