FYSETC Prusa MK3S clone Kit Database

1.Prusa MK3S STL file update 2020.7.10 These print files are suitable for FYSETC prusa MK3S 3D printer. Compared with the official printed parts, we have added three parts: PSU-cover-MK3_bottom, PSU-cover-MK3_top, and Spool-holder.The other parts are the same as the official Prusa MK3S. You can also get it here： https://www.thingiverse.com/thing:4728793

2.Prusa MK3S assembly tutorial
https://help.prusa3d.com/en/category/original-prusa-i3-mk3s-kit-assembly_280

3.Prusa MK3S knowledge base
https://help.prusa3d.com/en/tag/mk3s/

4.Prusa MK3S assembly tutorial update 2020.8.3
The tutorial is very detailed. We also provide a video assembly tutorial. It is more convenient to use the two tutorials together，divided into 5 steps:

https://youtu.be/e2qvbB0Xqfg

https://youtu.be/ntqnIuPzF5k

https://youtu.be/NayX_Eky94o

https://youtu.be/t37JR-865cU

https://youtu.be/UVHUfH4zhIA

5.Go to buy link：https://es.aliexpress.com/item/32968736910.html?spm=a219c.12010615.8148356.3.26ed28558FsEev

Originally, there would be a brightness menu under the setting to adjust the screen backlight, but in fact there is no;

In order to be more stable during the production of the 2004 screen, the hardware replaced the triode (BC817) that controls the backlight with a MOS tube (AO3400); The brightness menu will only be opened when it is low, so many people who use this screen do not see the brightness menu.

Compile the firmware by yourself, and turn off some functions of power-on detection low level. Open the backlight.cpp file and find the following location:

void backlight_init()
{
//check for backlight support on lcd
    SET_INPUT(LCD_BL_PIN);
    WRITE(LCD_BL_PIN,HIGH);
    _delay(10);
    backlightSupport = !READ(LCD_BL_PIN);
    if (!backlightSupport) return;

//initialize backlight

Change to：

void backlight_init()
{
//check for backlight support on lcd
    SET_INPUT(LCD_BL_PIN);
    WRITE(LCD_BL_PIN,HIGH);
    _delay(10);
    backlightSupport = 1 // !READ(LCD_BL_PIN);// 更改这一行
    if (!backlightSupport) return;

//initialize backlight

Then save the file, compile the firmware and download it to the motherboard.

We also provide the compiled firmware on github, copy the following address to the browser to download it directly.

https://github.com/FYSETC/FYSETC-Prusa-MK3S-clone/blob/master/Prusa.mk3s%2B_3.12.rc1_add_brightness.hex

Replace T1 with a transistor BC817 or BC847 and other compatible NPN transistors. Versions before 2021 may also need to replace R3 with a 100R resistor.