Ramps-Fd v1 Lcd adapter problem (2004 LCD) marlin 2.0.x

[Miran81]

Hi. I bought lcd adapter for ramps-v1+arduino due and ı'm using marlin 2.0.x bugfix. #define REPRAP_DISCOUNT_SMART_CONTROLLER is ok but just squares on screen. Please help me .

[William]

Hey,
Could you check the pin define of it?
Maybe the pin of it incorrect.You can try to swap 180^ then test it.

[Miran81]

I tried . when ı change 180 degree , there is no light.

[William]

Do you have a multimeter?
I suggest you check the pin of the motherboard "EXT".
It should have the +5V and +12V output on the "EXT" port then use the multimeter check the adapter EXT1+EXT2: +5v and +12v pin work or not.
If the hardware is ok then you need to check the pin define on fw.

[Miran81]

its ok, but when i cut off energy and one more time plug it in , just squares on screen. then I click reset, lcd is normally why it wants reset ? Do you have marlin 2.0x for ramps fd v1+arduino due ? I want to use this board with tmc2130 spi .

[William]

Mabye you can try to re-burn the bootloader then upload the fw.