Two sample wiring diagrams for connecting the BTT CB1 SoC to a BTT TFT35 SPI display via GPIO (SPI + I2C), as well as to an MCU (mainboard) via GPIO (UART).
Diagram
Bill of Materials
Id
Description
Qty
Unit
Designators
Manufacturer
1
Cable, RIBBON, 9 x 24 AWG
10.0
cm
DISPLAY CABLE
2
Cable, WIRE, 4 x 24 AWG
10.0
cm
SERIAL CABLE
3
Connector, GPIO, female, 40 pins
1
CB1
BIGTREETECH
4
Connector, JST-XH, 6 pins
1
MCU
5
Connector, JST-XH, female, 10 pins
1
TFT35
BIGTREETECH
Notes
Ensure that your specific hardware revisions are compatible with the pinout shown here.
Also note that the MCU example shown for UART here may only be applicable to the Ender-7 stock mainboard,
as its display port/connector could be directly used for UART/serial communication.
As for the cables, most cables/wires should work fine here, so long as the distances are kept relatively short.