Shenzhen BIGTREE technology co., LTD.
BIG TREE TECH
Note：
1.Settings about Spread: Low=StealthChop, High=SpreadCycle；
The hardware selection terminal SPREAD is reserved on the
motherboard, and users can set it directly in the firmware
(there is no need to insert any short-circuit cap on the
motherboard).
2.Each driver is reserved with four pin expansion ports,
respectively DIAG,INDEK,CLK,VREF from left to right. Users can
add DIY functions according to their own preferences, such as
DIAG as ENDSTOP function and so on.
The firmware description of motherboard
The test firmware (For Ender 3) will be installed in the factory
motherboard. The firmware can be used directly or can be changed
according to your own needs.
The Firmware Acquisition Method of SKR Motherboard
Obtain by Ask customer service or technical personnel；
Download at our Company Open source website：
https://github.com/bigtreetech
Motherboard firmware update method
Choose the file suitable for your model in the
downloaded firmware package to copy to SD Card Root
directory
Note: File name cannot be changed, firmware.bin must
be lowercase!
Insert SD card into the main board SD card slot, re-energize or press
the reset
key, wait for about 10S. After that, the update can be completed.
For DIY motherboard firmware, please refer to BTT SKR MINI E3 V1.2 PIN data;
Notes：
Firmware file names in SD Card cannot be
changed.(including both upper and lower case
letters)；
The wiring process and the plug-in drive
process must be carried out under the premise of
