Produced by BIGTREETECH
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2.5 RGB
LED
WIRING
When using the motherboard with RGB LEDs you should wire them as shown in the image
below. The exact pinout of the connector can be found on the silkscreen on the underside
of the motherboard.
2.6 R
ASPBERRY PI WIRING
The motherboard supports a connection to a Raspberry Pi for printing. There are several
connection options available to connect to a raspberry pi. Simplest of all is to connect the
raspberry pi directly to the USB-C port which will emulate a virtual serial port on the pi.
However, if you have another need for the USB-C port you are still able to connect the
raspberry pi to the motherboard using a direct serial connection over UART or SPI.
Dedicated UART and SPI pin headers have been made available on the motherboard for
this purpose with the pin mappings conveniently printed in silkscreen on the underside of
the board for each. It is beyond the scope of this manual to detail exactly how to connect
the raspberry pi to either of these headers however there is an abundance of material
online that explains how to interface a raspberry pi to an external device over either of
these serial busses.
5V power for the raspberry pi is provided via the dedicated Raspberry pi header (UART2).
Consult the PINS.pdf document for the exact pinout of this header.