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External SPI bus

Connector pinout

RDDRONE-FMUK66 Rev. C schematic

RDDRONE-FMUK66 Rev. B schematic

Rev. B (and older boards) are not supported anymore. This information is left for reference.

Pin

Signal

Voltage

1

VCC

+5.0V

2

SPI CLK

+3.3V

3

SPI MISO

+3.3V

4

SPI MOSI

+3.3V

5

SPI CS

+3.3V

6

GPIO EXT

+3.3V

7

GND

GND