Geeetech

I GOT IT!!!


-------
5V | 1 2 | GND
LCD_EN - PC1 | 3 4 | LCD_RS - PE3
LCD_D4 - PD0 | 5 6 | GND
BTN_EN2 - PH1 | 7 8 | BTN_EN1 - PH0
BTN_ENC - PD2 | 9 10 | GND
RESET | 11 12 | BEEPER - PD3
-------


And in Marlin set:
#define REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER
#define ST7920 ...

So I actually found the schematic for the GT2560 V4.1 board on the A20M Geeetech download page (Why I didn't check that first is beyond me).
It says this is the pinout:

-------
5V | 1 2 | GND
LCD_D7 - PC1 | 3 4 | LCD_D6 - PE3
LCD_D5 - PD0 | 5 6 | GND
LCD_D4 - PH1 | 7 8 | LCD_EN - PH0
BTN_ENC ...

Hello Community,
I recently acquired an A20M with a dead controller board. Instead of replacing the outdated mega 2560 board I opted for a BTT Octopus V1.0 board. This way I can add dual Z's with independent drives for leveling, still keep the dual extruders, and have plenty of expansion room. I ...