Tronxy X5S-400 Marlin stuck at splash-screen I got a Tronxy X5S-400, I assembled it and when I power it on, I see on the screen one of the below images and gets stuck there. Is the firmware broken? If yes, where can ...--prophetes.ai

Tronxy X5S-400 Marlin stuck at splash-screen I got a Tronxy X5S-400, I assembled it and when I power it on, I see on the screen one of the below images and gets stuck there. Is the firmware broken? If yes, where can I get a `configuration.h` file? I verified that the two buses between the screen and the mainboard are not loose or incorrectly connected. ![Marlin splash screen]( "Marlin splash screen") ![Screen corruption]( "Screen corruption") The board is a MKS Melzi v2.0 clone ![Controller]( "Controller")

It looked like the firmware wasn't flashed correctly in the factory. What I did was to flash a bootloader using an Arduino compatible board and to flash the Marlin software e.g. according to videos from this guy.

Next, the menu wasn't displayed correctly so I added, in the `Configuration.h` the following lines:

#define ST7920_DELAY_1 DELAY_NS(63)
#define ST7920_DELAY_2 DELAY_NS(100)
#define ST7920_DELAY_3 DELAY_NS(125)

Now the display is working fine, and the Marlin firmware can be directly flashed from the computer because the bootloader remains there.

I also had a problem with the heating bed which was heating very slow and I had to raise consistently the `TEMP_BED_RESIDENCY_TIME` and decrease `TEMP_BED_HYSTERESIS` to 1.